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To date, three species of Isospora Schneider, 1881 have been described from lizards of the genus Acanthodactylus Wiegmann. Two of these, although representing separate species parasitizing two different hosts, Acanthodactylus boskianus Daudin in Egypt and A. schmidti Haas in Saudi Arabia, were described under the name Isospora acanthodactyli. The third species is Isospora abdallahi Modrý, Koudela et Slapeta, 1998 from A. boskianus in Egypt. In the present study, Isospora alyousifi nom. n. is proposed to accommodate Isospora acanthodactyli Alyousif et Al-Shawa, 1997 (homonym of I. acanthodactyli Sakran, Fayed, El-Toukhy et Abdel-Gawad, 1994) and its redescription based on newly collected material is provided.

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In the course of the faunistic inventory in Wadi Ramm Protected Area, a total of 34 species of reptiles representing nine families (Gekkonidae, Chamaeleonidae, Agamidae, Lacertidae, Scincidae, Varanidae, Leptotyphlopidae, Colubridae, and Viperidae) were recorded from different habitats in Wadi Ramm and its closest vicinity. Three species (Lacerta cf. kulzeri, Chamaeleo chamaeleon, and Ablepharus rueppellii) are considered to represent relicts from earlier, more humid periods. Habitat preferences for collected species are included.

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This study includes a list of reptiles collected from Rumaila desert, south of Iraq, with a redescription of snake Eryx jayakary were given.

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Endogenous stages of Isospora acanthodactyli from sandy fringed-toed lizard (Acanthodactylus schmidti) were described for the first time, in Al-Qassim, Saudi Arabia. Merogony and gamogony took place inside the host cell’s cytoplasm, in the distal part of the small intestine. Multinucleated meronts, microgamonts and macrogametes were described and measured.

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The present work provides a list of all amphibians and reptiles recorded from Iraq up to 2014. It includes 115 species (105 species of reptiles and 10 species of amphibians) dating back to 25 families (20 families of reptiles and 5 families of amphibians). Conservation status of each species was mentioned.

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The reproductive biology of (reproductive behaviour, reproductive cycle and fat body cycle) Acanthodactylus schmidti was examined using specimens obtained from north of Riyadh, Saudi Arabia. Data for this research came both from ecological studies in the field and also histological examinations. The reproductive season (which coincided with the rainy season of the area) was found to commence in October–November and terminated in May. Young lizards were seen in the study area from as early as February and as late as June. There is evidence for the presence of multiple clutches (maximum of three) during each breeding season. It is concluded that the timing and length of the reproductive season and multiple clutches are an important adaptation for this species which inhabits desert regions with unpredictable weather conditions.

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Male lizards had larger home ranges than females and, in general, spring home ranges were greater than winter ones. Overlap in home ranges was not uncommon; extent of overlap varied greatly. Use of burrows by both species was similar but there was a difference in the use of habitats, eg A. schmidti were often seen basking in open areas, but A. boskianus were rarely seen on bare sand away from vegetation.

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The resting metabolic rate-temperature curves of juvenile, sub-adult and adult stages of the lizard Acanthodactylus schmidti were studied at 10, 15, 20, 25, 30 and 35°C. The mass-specific resting metabolic rate equations at different temperatures were calculated. Juveniles and sub-adults were found to have higher rates of O2 consumption than adults. The values for mass regression coefficient «b» proved to be temperature-dependent and ranged from 0.11 at 10°C to 0.58 at 35°C

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Oxygen consumption levels and metabolic rate temperature curves of various lizard species from three different climatic regions were examined in relation to ambient temperature. The species used in this research were as follows: Anguis fragilis, Lacerta vivipara, Lacerta agilis (cool temperate species); Blanus cinereus, Podarcis hispanica, Podarcis lilfordi brauni, Podarcis lilfordi lilfordi, Podarcis muralis, Psammodromus algirus, Tarentola mauritanica (warm temperate species); Chalcides ocellatus, Acanthodactylus opheodurus, Acanthodactylus schmidti (desert species). A double chamber volumetric closed system was used to measure the resting oxygen consumption of the lizards. Acute oxygen consumption determinations were made, that is the lizards were not allowed to acclimate to the test temperatures. Interspecific differences in levels of resting oxygen consumption and in the characteristics of the metabolic rate temperature curves were examined in relation to methods of thermoregulation and in relation to the ecology of the respective species. Evidence for `temperature dependent shifts` and `low thermal dependence` was found in the metabolic rate temperature curves of some species. A diminishing Q10 at or below the voluntary body temperatures suggests some degree of metabolic homeostatsis and energy conservation.

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An extensive review on the taxonomic status, occurrence, geographical distribution, and the IUCN conservation status of 122 species/taxa (10 amphibians and 112 reptiles) belonging to 71 genera (8 genera of amphibians and 63 of reptiles) and to 25 families (5 families of amphibians and 20 families of reptiles) was made. As a part of Iraq’s unique biota, the knowledge of the herpetofauna of Iraq is poorly discovered and requires extensive field surveys, further research, and explorations in order to create full frame knowledge of its status and conservation.

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Isospora acanthodoclyli, new species is described from the feaces of Acanthodoctylus schmidti from Al-Thomama area in the central region of Saudi Arabia. Sporulated oocysts are spherical to subspherical 27.9×25.5 (25 1-29 8×22 7-27.8) μm Oocyst wall is smooth and bilayered Micropyle, oocyst residuum and polar granule absent Sporocysts are ovoid 14.6×11.1 (13.2-15.2×9 1-11.7) μm. Stieda and substiedal bodies are present. Sprozoites are hanana shaped with two spherical refractile globules. Isospora deserti (Finkelman and Paperna, 1994) is redescribed from the feces of Agama pallida in new geographical location. Sporulated oocysts measurement were similar to those reported previously from the same host in Israel (Finkelman and Paperna, 1994). Except for our observation of double layered wall, the oocyst morphology was identical to the original description of I. deserti.

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This paper describes the habitat of Acanthodactylus schmidti Hass in Saudi Arabia and its present systematic position. The evidence suggests A. schmidti is a valid species. It is adapted to the sand dune habitat, particularly in areas with low scrubby vegetation. Its burrows are dug only among the roots of Hammada elegans .

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A total of 44 species of amphibians and reptiles are reported from Al Madinah Al Munawwarah Province, Saudi Arabia. They include two species of amphibian in two families (Bufonidae and Dicroglossidae) and 42 reptiles belonging to 16 families (Agamidae, Boidae, Chamaeleonidae, Colubridae, Elapidae, Gekkonidae, Lacertidae, Lamprophiidae, Leptotyphlopidae, Phyllodactylidae, Psammophiidae, Scincidae, Sphaerodactylidae, Varanidae, Typhlopidae, and Viperidae). Platyceps sinai, Psammophis sibilans, Rhynchocalamus melanocephalus, are recorded for the first time to the herpetofauna of Saudi Arabia. Range expansion for Euphlyctis ehrenbergii and Acanthocercus adramitanus to northern Saudi Arabia is reported. Our records expand the known distribution range of the Arabian Cobra, Naja arabica, further northwest

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Seventeen (17) and twenty-two (22) species of terrestrial reptiles were recorded from ‘Uruq Bani Ma’arid and Harat al Harrah protected areas, respectively. Eight sites in ‘Uruq Bani Ma’arid and eleven sites in Harat al Harrah were surveyed for the presence of reptiles. A comparison between the two protected areas’ reptile fauna is provided, with brief descriptions of their habitat preferences. Uromastyx aegyptia, categorised by the IUCN Red List as Vulnerable, occurs in both protected areas. Ptyodactylus puiseuxi is a new species record for the herpetofauna of Saudi Arabia. This study indicates the importance of protected areas within Saudi Arabia for the conservation of reptile biodiversity, the need for extension of the protected area network and additional biodiversity surveys in other regions. Studies on species richness, biology and population size for endangered species should be a priority for future studies.

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We surveyed the historical Faid Hema, Ha’il region in Saudi Arabia and identified 22 species of reptiles (17 lizards and five snakes). We recorded for the first time nine reptiles (six lizards and three snakes) in the Faid Hema. Of these, one lizard, Mesalina adramitana, and two snakes, Cerastes gasperetti and Walterinessia aegyptia, were reported for the first time for the entire Ha`il region. We recorded 50% of all species for the entire study area at one site, which may be because it had three different habitat types near it (the Jannin mountain, soft soil, and firm, sandy soil). The next highest number of species we found was at an open site with firm, sandy soils and with gravel (containing 45.5% of the total species recorded), followed by a site that contained only sand (36.4% of the total). The lowest number of species was reported at an agricultural site, with only 13.6% of the total species found.

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Eleven out of 42 (26.2%) lizards Acanthodactylus schmidti were found harboring haemogregarines in their peripheral blood. The erythrocytic stages were differentiated into 2 forms: the young form (trophozoite) measured 12.5 +/- 0.5 x 1.7 +/- 0.3 microm and the large mature form (gametocyte) measured 19.8 +/- 1.7 x 1.7 +/- 0.3 microm. The infected erythrocytes were distorted from 16.0 +/- 1.2 x 9.2 +/- 0.2 microm to 20.2 +/- 1.8 x 6.7 +/- 0.8 microm, hypertrophied and faintly stained. None of the leucocytes seemed to be parasitized by the present parasite. Schizogony took place in the endothelial cells of lung capillaries and parenchyma of liver. Two types of schizonts were recorded; microschizonts of 9.35 x 9.65 +/- 0.38 microm and macroschizonts of 25.36 +/-1.81 x 20.35 +/- 0.82 microm. The microschizonts produced 6-12 merozoites, while the macroschizonts produced 18-36 merozoites, however there were no differences between both merozoites, each measured 11.54 +/- 0.81 x 1.41 +/- 0.71 microm. The infected host cells were markedly hypertrophied with noticeable irregularity and faint stainability as well as some vacuolation, necrosis or shrinkage and necrosis.

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In this study, we identified the diversity of the freshwater, marine and terrestrial herpetofauna of the State of Kuwait. It consists of a total of 45 extant species; 44 species of reptiles and a single species of amphibian according to recent updated taxonomic studies. All specimens of reptiles collected and held in American and European natural history museums are documented. Four species are added to the herpetofauna of Kuwait: Chalcides ocellatus, Hydrophis lapemo ides, Hydrophis viperina, and Trapelus agnetae.

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One hundred seventy-seven species of amphibians and reptiles in sixty-fiv genera have been recorded from within the political boundaries of Iran. The actual number of species may prove to be somewhat less when problems of synonymy have been more extensively investigated. Thirty-three species or 19 per cent of the known herpetofauna, are represented in the present collection. The majority of these (21 species) were collected in the western foothills of the Zagros Mountains in southwestern Iran. Relatively few collections have been made in Iran, and many species have been recorded from single localities. Many taxonomic problems must await the collection of further specimens and examination of typical material. Distribution is incompletely known for all species. Many of the early locality records are not precise, and require confirmation. The aridity and prolonged hot season impose severe limitations on the fauna of the foothill region of southwestern Iran. The length of the growing seasonn varies with the duration of the winter and spring rainy season. The vegetation is almost entirely herbaceous in this area, and is extensively grazed by sheep and goats. By late spring the hills are completely denuded, The large numbers of insects, which coincide with the blooming of herbaceous plants in the spring, dwindle through the summer. Grasshoppers and ants form the bulk of the food supply for many species throughout the summer. Various behavioral adaptations enable the amphibians and reptiles to survive the long summer. Foraging activity begins in the early morning hours, diurnal lizards quickly reaching temperatures of normal activity by exposing a maximum surface area to the direct rays of the sun. As ambient temperatures rise, the period of activity is extended by utilization of small areas of shade (particularly the case with lacertids), brief dashes being made into direct sunlight. The agamid lizards may remain in the sun, but position themselves so that the sun´s rays strike a minimum surface area, and at a small angle. Agama agilis ascends low bushes during extremely hot periods, and thus may escape much of the reradiated heat from the hot ground surface. The agamid lizards may benefit from changes in their albedo. They are dark in color when basking, and much lighter during the heat of the day. These color changes may supplement behavioral temperature regulation. The reptiles retreat to shelter during the hottest hours. Deep crevices in limestone outcrops provide shelter for Agama nupta, Mabuya aurata septemtaeniata, and several of the snakes. Agama agilis and Eremias guttulata watsonana seek refuge under small rocks or in rock piles on level ground. The latter species also utilizes small holes and cracks in the hard-packed soil. A few small streams persist throughout the summer, ofter only as intermittent pools. In many dry stream beds, moisture may be found a few inches beneath the surface. A moist, cool, microclimate is also maintained in small caves and ssinkholes in the gypsium formations. These areas provide a summer refuge for the amphibians, and shelter nocturnal reptiles during the day. These cracks and crevices are also utilized by Agama nupta during the hottest hours, and presumably at night. Several species of geckos and snakes are able to exist in the area due to their nocturnal habits, and the fact that temperatures do not drop below their normal activity range at night during the summer. Dune-dwelling species are able to escape the severe midday temperatures by retreating the burrows a few inches below the sand surface. Anal temperatures indicate that the normal activity range for most of the diurnal lizards of southwestern Iran is between 38.0° and 42.0°C. Uromastix loricatus was actively foraging at times when its anal temperature exceeded 43°C. Agama agilis was consistently found in direct sunlicht, the anal temperature above 40°C. Critical maximum temperatures for most diurnal lizards are between 46° and 49°C. Both Uromastix loricatus and Scincus conirostris recovered from temperatures above 50°C. Cowles and Bogert (1944) found that the normal activity range of diurnal lizards of the deserts of the southwestern U.S. was approximately 35°-43°C., and that the lizards preferred temperatures of about 37°C. They found that lizards avoided temperatures above 40°C. Critical maximum temperatures were reported to bte 43°-49°C. As air and surface temperatures increased during the late spring and summer in southwestern Iran, a shift in the periods of reptilian activity was noted. During the moderate spring temperatures, activity was confined to the midday hours. By midsummer, foraging activity was noted only during the earliest daylight hours,a nd again in late afternoon. A detailed zoogeographic analysis of the Iranian herpetofauna must await more extensive locality data, and the analysis of many systematic problems. Nevertheless, it is apparent that the several geographic and ecologic provinces of Iran are characterized by distinct differences in the composition of their faunas. Southwestern Iran and the northwestern highlands have a greater number of species with Mediterranean affinities than do the regions east of the Zagros Mountains. Southeastern Iran shares species with Pakistan and India, while elements of the Central Asia fauna are present in the northeast of the country. Apparently there is a relatively high degree of ebndemism on the central plateau of Iran. A European fauna prevails north of the Elburz Mountains on the south coast of the Caspian Sea. The majority of amphibians and reptiles known Iran are restricted in their distribution to the Middle East. Southwest Asia has apparently existed as a geographic unit long enough to have developed a characteristic herpetofauna, particularly at the species level. Acanthodactylus cantoris blanfordi, Acanthodactylus cantoris schmidti, Eremias guttulata watsonana, Ophisops elegans elegans.

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Relatively little is known about the ecology of lizards in Iran. This paper serves as a brief introduction to five representative biotopes and their associated lizard species living syntopically, based largely on my own observations. The selected localities are found in 1) Masjed Soleyman, foothills of the Zagros Mountains, Khuzestan; 2) Kupal dunes, on the Mesopotamian Plain, Khuzestan; 3) Shah ‘Abbas Caravanserai, Dasht-e Kavir, on the Central Plateau; 4) an abandoned village in Sistan, ruined buildings and loose loess substrate; 5) Hyrcanian Forest, northern slopes of lower Alborz Mountains and the Gorgan region. The biotopes are characterized briefly and the concept of syntopy is discussed.

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Some 500 Dhofar reptiles and amphibians are discussed and a minimum of 48 terrestrial species recognised for the area of which 5 were previously undescribed; these are a gecko, Hemidactylus lemurinus, and the lacertids Acanthodactylus felicis, A. opheodurus,A. masirae and Mesalina ayunensis; a new subspecies of gecko from north Oman, Bunopus spatalurus hajarensis is also reported. Various other species are reviewed; it appears that Bunopus abudhabi is a synonym of B. blanfordi, which is probably conspecific with B. tuberculatus, Hemidactylus parkeri is regarded as a subspecies of H. turcicus, the Arabian agamas of the Agama cyanogaster group are shown to include 2 species to which the names adramitana and yemenensis are applicable although their status relative to African populations in the group is not clear; A. jayakari is conspecific with A. flavimaculata, and A. neumanni with A. sinaita; Chamaeleo chamaeleon orientalis is similar to more northern populations of C. chamaeleon but C. c. arabicus is very well differentiated and may be a separate species, the use of genitalia in the classification of Acanthodactylus is emphasised and A. arabicus, A. blanfordi and A. schmidti are all given full species status; the recognition of Mesalina as a genus indepemdemt of Eremias is confirmed, it is suggestes that Atractaspis engeddensis may be conspecific with A. microlepidota and that Lytorhynchus gaddi is a synonym of L. diadema; the distinctive population of Echis carinatus in Dhofar appears to be closely related to those in south-west Arabia and adjoining Africa but animals from northern Oman and the rest of south-west Asia are very different. Additional specimens are reported of Bunopus s. spatalurus and Coluber thomasi, both previously known from only 2 individuals. Geographical variations of a number of species is discribed including 3 geckos that show very considerable differences within southern Dhofar: Hemidactylus homocolepis, H. yerburii and Tropiocolotes scorteccii. Observations on the ecology of many species are noted, especially for the aberrant gecko genus Pristurus, one species of which, P. carteri, behaves like a small, ground-dwelling diurnal agamid. Resource partition, at least amongst the lizards, appears to be largely based on parameters of time, food (especially prey size), hunting method and space. A number of forms occourring in both noreth Oman and Dhofar show differences in niche in the two areas apparently related to the presence of absence of a competitor. Several species are recorded from Dhofar for the first time including Bunopus spatalurus, Hemidactylus flaviviridis, H. turcicus parkeri, Pristurus minimus, Agama adramitana, Acanthodactylus boskianus,Mabuya tessellata, Leptotyphlops macrorhynchus and Lytorhynchus diadema. The herpetofauna of the area can be divided into a largely northern element of desert-adapted forms widespread in the Arabian peninsula and a more peripheral element in the south which shows considerably more affinity to south-west Arabia than to northern Oman. No reptile of amphibian endemics occur in the forested areas of Dhofar but 3 species present in the drymesic habitats on the north side of the mountains may be restricted to the region. Acanthodactylus opheodurus, Acanthodactylus felicis, Acanthodactylus masirae, Acanthodactylus boskianus, Acanthodactylus schmidti, Mesalina adramitana, Mesalina ayunensis.

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Aspects of the ecology of 23 lizard species found in the coastal lowlands of eastern Arabia are reported. Most forms occur in arid environments. The most obvious ecological separation is between diurnal and nocturnal species, the 10 latter all being geckos. Within these 2 groupings, species differ principally in microhabitat (particularly such features as distance from vegetation and ground softness), hunting techniques (sit and wait, active search or slow visual scanning) and the size of their mainly arthropod prey. However, 2 large diurnal forms are food specialists, feeding largely on plants and small vertebrates, respectively, and some diurnal species show differences in time of activity during morning. Body temperature of day-active species is controlled by posture, retreat into shade or burrows and use of the ground as a heat sink. Most nocturnal forms have body temperatures close to the ambient but they may sometimes be elevated in Bunopus tuberculatus, perhaps as a result of utilizing underground warmth. A wide range of predator avoidance techniques is used. Females are mainly gravid in spring. The number of eggs carried is low in species of small body size (often 1-2), suggesting that egg-laying is repetitive. Gross body shape is related to hunting and escape technique, foot structure to substratum type, and species living on soft sand have modifications that exclude sand from body orifices.

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The ability to shed (autotomize) all or part of the tail, usually in response to predator attack, and often to subsequently regenerate it is widespread in lizards and amphisbaenians and also occurs in a few snakes and in the tuatara. Most species possess a sophisticated intravertebral autotomy mechanism which seems to be primitive in the Squamata. This appears to have been independently lost in members of many groups, but some agamids and snakes have regained the ability to shed their tails by a simpler intervertebral means and a -number of agamids have also redeveloped tail regeneration as well. Breakable tails are used to evade capture in two main ways: by enabling reptiles to break away from predators that have grasped them by the tail and by providing a distraction which deflects the attention of the attacker away from the vulnerable head and body. It is argued that loss of caudal autotomy has occurred when the costs of tail shedding outweigh its benefits. Likely costs include the expense of regrowing the tail and the loss of a variety of possible tail functions that may cause partial incapacitation, at least until the tail regenerates. Benefits of autotomy are liable to be low if predation is rare, if the animal is able to protect itself effectively in other ways, if it is too slow to evade further pursuit after the tail is shed, or if the tail is small or unpalatable and consequently not likely to distract a predator. Benefit variation may well be greater than cost variation and therefore more important in initiating the loss of autotomy mechanisms. Many taxa that do not shed the tail appear to conform to the above interpretation, but in some cases, such as the Platynota, Agamidae and Chamaeleonidae, lack of intravertebral autotomy may reflect the history of these groups rather than being a direct result of present ecological pressures. The distribution of intervertebral autotomy in the Agamidae suggests that it may have evolved only in rather special circumstances where tail fragility is advantageous even in the absence of the ability to regenerate. Restriction ot autotomy planes to the tail-base, so that the whole organ is lost, a condition found in a number of relatively slow-moving geckoes, is interpreted as a means of ensuring that enough of the tail is shed to distract a predator from further pursuit. The stimulus necessary to induce autotomy can vary rapidly in individual lizards and at least some of these changes probably maximize the effectiveness of the tail-shedding mechanism. Differences in the readiness with which all or part of the tail is shed exist between species and are likely to reflect the balance of costs and benefits in particular cases. Variations in incidence of broken tails between species and populations may be due to such differences in fragility but many other factors may play a part, including the age structure of samples, incidence of unsuccessful attacks by predators and ability to evade predators after autotomy. There is a clear tendency for climbing lizards, especially those living on rock surfaces, to have higher incidences of broken tails than ground-dwelling species, perhaps because the tail is usually less important in locomotion in the first group. Many lizards possess conspicuously coloured tails and tail movements that seem likely to help distract attention from the head and body. Conspicuous tail colouring is more frequent and often better developed in young animals, which tend to be more vulnerable than adults, and in active species from open habitats where crypsis may not always be very effective. Conspicuous tails usually have contrasting light and dark areas in nocturnal forms but are often a single bright colour in diurnal ones, probably reflecting the visual capacities of their respective predators. The predominance of blue tails in day-active species may be because this colour is striking close to but not very arresting at a distance, so it may not attract predators from far away while still drawing their attention at close quarters.

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Arabia, including the arid lowland regions of Jordan, Syria, Iraq and southwest Iran, has approximately 128 species of terrestrial reptiles and about 7 of amphibians. Endemicity is high, 55% of species being largely or entirely confined to the area. Abrupt faunal discontinuities are present between Arabia and neighbouring regions, namely the Horn of Africa, the Sahara desert and the relatively mesic areas to the north. However, there must have been substantial interchange with these areas in the past. Within Arabia, the main Zoogeographie division is between the arid regions occupying most of the peninsula and much smaller, often more mesic areas of endemicity in the south. The former are mainly occupied by Saharo-Sindian taxa and have rather more affinities with the Sahara than to arid regions east of Arabia. Southern areas of endemicity include: 1. The southwestern coast, with affinities to the Horn of Africa and the inland deserts of Arabia. 2. The southwest and southern highlands which share a number of forms with northeast African relationships but differ significantly, the former having more, often endemic species with African affinities and a number with relatives in the Mediterranean and other northern mesic regions. The drier southern mountains have their own endemics, some of which have representatives in the öiddat al-HaräsIs area to the east. 3. The north Oman mountains also possess distinctive species and populations, some of which are related to forms in the less arid parts of the Iranian area. Finally there are a number of mesic forms distributed around the periphery of Arabia, and populations at oasis sites in the arid region which are probably relicts of forms more widespread in Quaternary pluvial phases.

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Differences in surface structure (ober- hautchen) of body scales of lacertid lizards involve cell size, shape and surface profile, presence or absence of fine pitting, form of cell margins, and the occurrence of longitudinal ridges and pustular projections. Phylogenetic information indicates that the primitive pattern involved narrow strap-shaped cells, with low posteriorly overlapping edges and relatively smooth surfaces. Deviations from this condition produce a more sculptured surface and have developed many times, although subsequent overt reversals are uncommon. Like variations in scale shape, different patterns of dorsal body microornamentation appear to confer different and conflicting performance advantages. The primitive pattern may reduce friction during locomotion and also enhances dirt shedding, especially in ground-dwelling forms from moist habitats. However, this smooth microornamentation generates shine that may compromise cryptic coloration, especially when scales are large. Many derived features show correlation with such large scales and appear to suppress shine. They occur most frequently in forms from dry habitats or forms that climb in vegetation away from the ground, situations where dirt adhesion is less of a problem. Microornamentation differences involving other parts of the body and other squamate groups tend to corroborate this functional interpretation. Microornamentation features can develop on lineages in different orders and appear to act additively in reducing shine. In some cases different combinations may be optimal solutions in particular environments, but lineage effects, such as limited reversibility and different developmental proclivities, may also be important in their genesis. The fine pits often found on cell surfaces are unconnected with shine reduction, as they are smaller than the wavelengths of most visible light.

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Lizard tail autotomy is an antipredator strategy consisting of sturdy attachment at regular times but quick detachment during need. We propose a biomimetic fracture model of lizard tail autotomy using multiscale hierarchical structures. The structures consist of uniformly distributed micropillars with nanoporous tops, which recapitulate the high-density mushroom-shaped microstructures found on the lizard tail’s muscle fracture plane. The biomimetic experiments showed adhesion enhancement when combining nanoporous interfacial surfaces with flexible micropillars in tensile and peel modes. The fracture modeling identified micro- and nanostructure-based toughening mechanisms as the critical factor. Under wet conditions, capillarity-assisted energy dissipation pertaining to liquid-filled microgaps and nanopores further increased the adhesion performance. This research presents insights on lizard tail autotomy and provides new biomimetic ideas to solve adhesion problems.

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The physical geography of Iraq is summarised. Using data from the relevant literature and current information from the Internet, a very provisional checklist of Iraqi amphibians and reptiles is presented. Ten amphibian species are reported for Iraq, and exactly 100 reptile species.

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Lizards can famously shed their tails when under threat from pursuing predators. The discarded tail, often wiggling, can distract the predator, allowing the lizard to survive the encounter. Self-amputation is known as autotomy and is a common defense strategy in lizards, salamanders, crustaceans, spiders, and other animals. This raises the important question of how does a lizard retain its tail during normal activities that can be vigorous? The tail of a lizard affects its ability to run, leap, mate, and escape the next predator, so losing the tail is a costly sacrifice. The precise mechanism that provides the lizard with the advantage of retaining the tail in situations that are not life-threatening, yet readily shedding it when threatened, has recently been addressed in an elegant study by Navajit Baban, Yong-Ak Song, and others.Baban et al. studied the tails of three common lizards, two species of geckos (Hemidactylus flaviviridis and Cyrtopodion scabrum, of the Gekkonidae family), and one from the family of “true” lizards (Acanthodactylus schmidti, of the Lacertidae family). In the laboratory the tail of the live animal was passively autotomized, and the event was captured by high-speed (3,000 frames per second) video. The proximal and distal exposed surfaces of the tail (the fracture plane) were immediately preserved in formalin and prepared for scanning electron microscopy (SEM). There are several potential facture planes in the tail, allowing for portions of the tail to be sacrificed, depending on the need. This is made possible by the fact that the lizard tail is not one entity, but assemblies of segments connected via the fracture planes.

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In the present work, we use an exceptional database including 5,359 records of 101 species of Oman’s terrestrial reptiles together with spatial tools to infer the spatial patterns of species richness and endemicity, to infer the habitat preference of each species and to better define conservation priorities, with especial focus on the effectiveness of the protected areas in preserving this unique arid fauna. Our results indicate that the sampling effort is not only remarkable from a taxonomic point of view, with multiple observations for most species, but also for the spatial coverage achieved. The observations are distributed almost continuously across the two-dimensional climatic space of Oman defined by the mean annual tempera- ture and the total annual precipitation and across the Principal Component Analysis (PCA) of the multivariate climatic space and are well represented within 17 out of the 20 climatic clusters grouping 10% of the explained climatic variance defined by PC1 and PC2. Species richness is highest in the Hajar and Dhofar Mountains, two of the most biodiverse areas of the Arabian Peninsula, and endemic species richness is greatest in the Jebel Akhdar, the highest part of the Hajar Mountains. Oman’s 22 protected areas cover only 3.91% of the country, including within their limits 63.37% of terrestrial reptiles and 50% of all endemics. Our analy- ses show that large areas of the climatic space of Oman lie outside protected areas and that seven of the 20 climatic clusters are not protected at all. The results of the gap analysis indi- cate that most of the species are below the conservation target of 17% or even the less restrictive 12% of their total area within a protected area in order to be considered adequately protected. Therefore, an evaluation of the coverage of the current network of protected areas and the identification of priority protected areas for reptiles using reserve design algorithms are urgently needed. Our study also shows that more than half of the species are still pending of a definitive evaluation by the International Union for Conservation of Nature (IUCN).

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We have updated the list of the lizard species present in Qatar and produced the first distribution maps based on two field surveys in 2012 and 2013. We used the QND95/Qatar National Grid with a grid of 10 × 10 km squares for mapping. Our results show the occurrence of 21 lizard species in Qatar, from the 15 species indicated in the last biodiversity report conducted in 2004. The most abundant family found in Qatar is Gekkonidae with nine species (Bunopus tuberculatus, Cyrtopodion scabrum, Hemidactylus robustus, H. flaviviridis, H. persicus, Stenodactylus arabicus, S. slevini, S. doriae, Pseudoceramodactylus khobarensis), followed by Lacertidae with four species (Acanthodactylus schmidti, A. opheodurus, Mesalina brevirostris, M. adramitana), Agamidae with three species (Trapelus flavimaculatus, Uromastyx aegyptia, Phrynocephalus arabicus), Scincidae with two species (Scincus mitranus, Trachylepis septemtaeniata), and Varanidae (Varanus griseus), Sphaerodactylidae (Pristurus rupestris) and Trogonophiidae (Diplometopon zarudnyi) with one species each. The species richness fluctuated largely across Qatar between one and eleven species per grid square. We believe that the lizard fauna records in Qatar are still incomplete and that additional studies are required. However, our study here fills a gap concerning lizard biodiversity knowledge in the Gulf Region.

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Specimens of this day-active lizard species were shown to possess an endogenous circadian rhythm of activity and rest, which is synchronized both by light-dark cycles and by regularly fluctuating temperatures. In continuous light at a constant temperature (31°C), the rhythm free-runs somewhat imprecisely, with a period of about 22.5 h as is to be expected in a diurnal animal, according to the “circadian rule”;. The ecological significance of the mode of rhythm synchronization is discussed.

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Zoogeographically, the Jordanian herpetofauna is heterogeneous, originating from four biogeographical regions (Oriental, Palearctic, Saharo-Sindian, and Afrotropical) and occupying four different ecozones. Ninetythree species and subspecies of amphibians and reptiles are recorded from Jordan, showing different distribution patterns. The Mediterranean ecozone harbours the highest number (35) of recorded species, followed by the Sudanian Tropical penetration zone (16), and the Badyiah ecozone (12), respectively. Jordan is not separated by natural boundaries from the surrounding countries, which prevents the operation of isolation mechanisms, and seems to result in the absence of endemism. There are, however, three areas of endemism within the Eastern Mediterranean region taken as one whole unit: the Badyiah shared by Syria, Iraq, Saudi Arabia and Jordan, the northern part of the Mediterranean ecozone shared by Lebanon, Israel, Syria and Jordan, and southwest Jordan, Israel and Sinai. Some Palearctic species such as Coluber schmidti and C. ravergieri are relicts of the postglacial period and continue to survive in refugal enclaves with delicate ecological patterns. The distribution of some species, such as Bufo viridis, Mauremys caspica rivulata, Natrix tessellata, Coluber ventromaculatus, C. jugularis asianus, Walterinnesia aegyptia, and Vipera palaestinae, has been greatly influenced by climatic as well as anthropogenic changes.

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The lizard fauna of Jordan is very diverse and forms 55.5% of the terrestrial herpetofauna of the country. Lizard species of Arabian origin form the highest percentage (43%) of the lizards, followed by Saharo-Sindian (35%), Palaearctic (20%) and only 2% with Afrotropical affinities. 69.1% of the lizard species inhabit two ecozones: Badia (Eastern Desert); and Wadi Araba and Wadi Rum. The Badia may form the focal point for the evolution of certain Acanthodactylus species. Jordan forms the southernmost limit of the distribution of some Palaearctic species (i.e. Lacerta media, L. laevis, Pseudopus apodus) and they inhabit the Mediterranean ecozone. The presence of diverse habitats in Jordan allowed certain allopatric congeneric species of the genus Ptyodactylus to live in isolation from one another. Southern Jordan and Wadi Rum are part of the Levantine land bridge and act as a “biogeographical filter”. Most of the species found in Wadi Rum are of Arabian affinities and their distribution does not extend towards the west.

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The terrestrial reptiles oft he UAE the lizards, snakes and a single species of amphisbaenian or worm lizard. There are no extant native crocodiles, tortoises or freshwater terrapins. Lizards, snakes and amphisbaenians are all classified under the reptilian order Squamata, in the suborders Sauria, Serpentes and Amphisbaenia respectively. Characterised by their dry, scaly skin, which protects them from drying out, and by their reliance on external heat sources to maintain their body temperatures, reptiles are well-suited to hot and arid areas. In Arabia, reptiles are a major component of the desert and mountain ecosystems and a total of at least 54 species of terrestrial reptile are found in the UAE. So far, a comprehensive handbook covering all of the UAE reptiles in detail is not available. The Handbook to Middle East Amphibians and Reptiles (Leviton et al. 1992) does not cover the species of the mountains or Northern Emirates and gives little information on natural history. Useful general sources of information are Wild about Reptiles (Jongbloed 2000) and Terrestrial Reptiles of Abu Dhabi (Baha El Din 1986).

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From the 26th of April until the 3rd of May I had a herpetological trip to Oman together with Javier Aznar, Javier Gallego and Gabriel Martinez. During these eight days we were able to find and photograph 48 reptile- and 2 amphibian species. The trip started in Maskat and took us by Al-Qabil, Thumrait to Salalah and back by Al-Qabil, Nizwa, Ibri, Barka to Maskat. The course of this journey is presented in chronological order.

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Mitochondrial DNA sequences consisting of 645 sites from the 12S rRNA and 16S rRNA genes were used to estimate the phylogeny of 15 of the 32 species of spiny-footed lizards Acanthodactylus. The resultant tree has similarities to that produced from a differentially weighted data set of 32 morphological characters but there are also significant differences. However, combined analysis of molecular and morphological data sets produces the same tree topology as DNA sequence alone. The molecular data confirm that there are distinct eastern and western clades within Acanthodactylus, but place A. boskianus in the former while the A. scutellatus group constitutes a third clade. Species for which only morphological information is available were integrated with the combined tree to give a provisional phylogeny for 31 species. This phylogeny indicates that the ancestor of existing Acanthodactylus probably originated in south-west Asia and that North Africa was invaded by more than one lineage of the genus. It also suggests that soft aeolian sand habitats may have been independently occupied more than once. Molecular data provide independent evidence that the differential weighting of morphological characters in past analyses was appropriate.

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DNA sequences from parts of the 12S, 16S and cytochrome b mitochondrial genes, which totalled 1049 aligned base pairs, were used to estimate the relationships of 49 species of Lacertidae, including representatives of 19 out of the 23 recognized genera and 23 species of the paraphyletic genus Lacerta. These data were used, together with morphological information, to estimate the relationships within the family. Molecular evidence corroborates the monophyletic status of many genera and species groups originally based on morphology. It indicates that Psammodromus forms a clade with Gallotia, which is the sister taxon of all other lacertids. These comprise three units: the primarily Afrotropical armatured group; the largely Oriental Takydromus; and the west Palaearctic Lacerta and its derivatives, Podarcis and Algyroides. Morphology also supports the first three assemblages, but suggests that they are derived from a paraphyletic Lacerta. Within Lacerta and its allies, DNA sequence analysis corroborates the affinity of some members of each of the subgenera Lacerta s. str. and Timon, and of the L. saxicola group. It also supports the relationship of L. monticola, L. bonnali and L. horvathi, and suggests that the L. parva–L. fraasi clade and L. brandti are not related to Psammodromus–Gallotia, as morphology indicates, but instead are associated respectively with the L. danfordi and L. saxicola groups. DNA sequence data provide additional evidence that the eastern Arabian `Lacerta` jayakari and `L.` cyanura are members of the armatured clade and also sister species. Our analysis supports an origin for present lacertids in west Eurasia. The armatured clade invaded Africa, probably in the mid-Miocene, spreading widely and evolving increasingly xeric-adapted forms, one lineage of which later moved back into the Palaearctic. `Lacerta` jayakari and `L.` cyanura are assigned to Omanosaura, Lutz and Mayer 1986. The name Gallotiinae Cano, Baez, Lopez-Jurado and Ortega, 1984 is available for the Gallotia–Psammodromus clade, Eremiainae Shcherbak 1975 for the armatured clade and Lacertinae for Lacerta, Podarcis and Algyroides. Two new subgenera of Lacerta are proposed here: Caucasilacerta for L. saxicola and its allies, and Parvilacerta for L. parva and L. fraasi.

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The aim of this study is to detect areas of endemism in lizards in Iran. This is the first study of its kind focusing on this subject. Areas of endemism for two families of lizards (Lacertidae and Gekkonidae) that have the highest number of endemic species than other lizard families in Iran were identified by Parsimony Analysis of Endemicity (PAE). Distribution data were collected from previous studies on the Iranian lizards and also from the recent literature on the descriptions of new endemic species. A total of 81 species of lizards were available for analysis. The study area was divided into a 2° × 2° grid of 63 Operational Geographic Units (OGUs). PAE was applied to the data matrix to detect areas of endemism and detected eight areas of endemism in southwestern Iran and near the Persian Gulf. Southern Iran is the main region where most species from Arabia came into Iran and were stopped in their dispersal. Two grids in southern and northeastern Iran were recognized as the areas with the highest density of species in the studied families. Lacertidae and Gekkonidae did not have a shared endemic species in the region (cells 59 and 60) but the area of endemism identified by PAE in the Persian Gulf region suggests that exchange between Iranian and Arabian herpetofauna was very high during interglacial periods. The distribution pattern of the endemic species of these families is concentrated in the region of the Alborz and the Zagros Mountains, but the single area of endemism in southern Iran has an important role in the historical biogeography of the Iranian herpetofauna. During interglacial periods, the Persian Gulf acted as a corridor between the herpetofauna of the two sides and this suggests the importance of this area of endemism for the Gekkonidae family. Also, the OGUs with the highest density of species are located around the country and, the lowest density is in the Central Plateau. PAE detected eight areas of endemism in southwestern Iran, but according to the number of species per units, two OGUs can be identified as high density in northeastern and southern Iran.

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The Afrotropical element in the Arabian herpetofauna is concentrated in the southwestern mountainous region, whereas everywhere else in the peninsula the reptile fauna is Saharo-Sindian. There is a high degree of correspondence between the reptile faunas of the Yemens and Somalia. A remarkable faunistic resemblance also exists between the relict faunas of SW Arabia and Morocco. Three evolutionary levels can be distinguished among Ethiopian taxa in Arabia and are interpreted as evidence of different times of faunal contact: 1. Old relicts (genus level) of a Palaeogene (pre continental drift) Arabian/North African fauna (Pristurus, Trogonophidae); 2. Endemic species closely related to East African species (most probably Miocene); 3. Species distributed on both sides of the Bäb al-Mandab (Pleistocene). Contrary to the Saharo-Sindian faunal elements, there is good evidence that groups 2 and 3 used a landbridge across the Bäb al-Mandab for faunal exchange: the Miocene closure of the southern outlet of the Red Sea and a Pleistocene land connection due to eustatic sea level change.

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Little is known about altitudinal distribution of lizards in Iran. In the present study we studied distribution pattern of members of family Lacertidae along the eleveatinal gradient in Iran. To determine environmental drivers of distribution pattern of 48 lizard species, all known valid members of family Lacertidae, along elevational gradient in Iran. Firstly, we classified Iran digital elevation model (DEM) based on 100m intervals, that resulted in 56 altitudinal bands and number of species in each band was recorded. Secondly, we extracted mean value of following variables; altitude, slop, area, solar radiation index (SRI), normalized differences vegetation index (NDVI), annual precipitation, precipitation of wettest month, precipitation of driest month precipitation, precipitation of wettest quarter, precipitation of driest quarter, and precipitation of warmest quarter, and using VIF measure correlated variables were removed. Finally, we performed a multiple regression and found that area and precipitation of warmest quarter are the most important drivers of distribution pattern of family Lacertidae along elevational gradient in Iran. General distribution pattern of family Lacertidae was unimodal and maximum number of species living from 1475 m to 1675 m.

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In this third paper on the herpetofauna of Oman, three families are treated: eleven Lacertidae, six Scincidae and one varanid. New records, notes on ecology and localities are combined with data from literature.

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Observations concerning the ecology and distribution of the lacertid lizard species Acanthodactylus masirae and A. schmidti from southeastern Oman are reported along wi th new localities forA. masirae in the Wahiba Sands and in the Barr al Hikman. The herpetofauna found in the distribution areas of both species in Oman is presented.

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Aim Body size is instrumental in influencing animal physiology, morphology, ecology and evolution, as well as extinction risk. I examine several hypotheses regarding the influence of body size on lizard evolution and extinction risk, assessing whether body size influences, or is influenced by, species richness, herbivory, island dwelling and extinction risk. Location World-wide. Methods I used literature data and measurements of museum and live specimens to estimate lizard body size distributions. Results I obtained body size data for 99% of the world`s lizard species. The body size–frequency distribution is highly modal and right skewed and similar distributions characterize most lizard families and lizard assemblages across biogeographical realms. There is a strong negative correlation between mean body size within families and species richness. Herbivorous lizards are larger than omnivorous and carnivorous ones, and aquatic lizards are larger than non-aquatic species. Diurnal activity is associated with small body size. Insular lizards tend towards both extremes of the size spectrum. Extinction risk increases with body size of species for which risk has been assessed. Main conclusions Small size seems to promote fast diversification of disparate body plans. The absence of mammalian predators allows insular lizards to attain larger body sizes by means of release from predation and allows them to evolve into the top predator niche. Island living also promotes a high frequency of herbivory, which is also associated with large size. Aquatic and nocturnal lizards probably evolve large size because of thermal constraints. The association between large size and high extinction risk, however, probably reflects a bias in the species in which risk has been studied.

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Aim Temperature influences most components of animal ecology and life history – but what kind of temperature? Physiologists usually examine the influence of body temperatures, while biogeographers and macroecologists tend to focus on environmental temperatures. We aim to examine the relationship between these two measures, to determine the factors that affect lizard body temperatures and to test the effect of both temperature measures on lizard life history. Location World-wide. Methods We used a large (861 species) global dataset of lizard body temperatures, and the mean annual temperatures across their geographic ranges to examine the relationships between body and mean annual temperatures.We then examined factors influencing body temperatures, and tested for the influence of both on ecological and life-history traits while accounting for the influence of shared ancestry. Results Body temperatures and mean annual temperatures are uncorrelated. However, accounting for activity time (nocturnal species have low body temperatures), use of space (fossorial and semi-aquatic species are ‘colder’), insularity (mainland species are ‘hotter’) and phylogeny, the two temperatures are positively correlated. High body temperatures are only associated with larger hatchlings and increased rates of biomass production. Annual temperatures are positively correlated with clutch frequency and annual longevity, and negatively correlated with clutch size, age at first reproduction and longevity. Main conclusions Lizards with low body temperatures do not seem to have ‘slower’ life-history attributes than species with high body temperatures. The longer seasons prevalent in warm regions, and physiological processes that operate while lizards are inactive (but warm enough), make environmental temperatures better predictors of lizard life-history variation than body temperatures. This surprisingly greater effect of environmental temperatures on lizard life histories hints that global warming may have a profound influence on lizard ecology and evolution.

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The etymology of the reptiles, especially the lizards of Iran has not been completely presented in other published works. Iran is a very active geographic area for any animals, and more especially for lizards, due to its wide range deserts and ecology. We have attempted to ascertain, as much as possible, the construction of the Latin binomials of all Iranian lizard species. We believe that a review of these names is instructive, not only in codifying many aspects of the biology of the lizards, but in presenting a historical overview of collectors and taxonomic work in Iran and Middle East region. We have listed all recorded lizards of Iran according to the order of the scientific names in the book of Anderson, The Lizards of Iran. All lizard species and types have been grouped under their proper Families, and then they have been alphabetically ordered based on their scientific binominal nomenclature. We also examined numerous published works in addition to those included in the original papers presenting each binomial.

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Jordan has a very diversified morphology, which is reflected also in the diversity of its herpetofauna. A total 90 amphibian and reptilian species is known to inhabit Jordan. Of those three are amphibians, with the fourth species most probably already extinct, 47 are lizard species, 35 are snake species and five turtle species. The amphibians are represented by three different families, lizards and snakes both by seven families and turtles by four families. The distribution, ecology and systematics for most species are given.

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During a four week journey to Jordan in summer of 1994 the following five species of the lizard family Lacertidae were observed: Acanthodactylus boskianus asper, A. opheodurus, A. schmidti, Ophisops elegans ehrenbergii, and Lacerta cf. kulzeri.

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During a journey to Jordan in July/August 1994, 19 species of amphibians and reptiles were recorded. Some ecological observations were made in their habitats. The find of giant tadpoles of Rana ridibunda and the problematic, unclear systematic status of Ophisops elegans ehrenbergi in Jordan are emphasized

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The global struggle to conserve as many species as possible with limited resources requires an improvement of our knowledge on the distribution of biodiversity. In Iran, the state of knowledge is poor for most groups of organisms, except few vertebrate groups and vascular plants. Reptiles are one of the best known, most diverse vertebrate groups in Iran, with a high rate of endemism (ca. 29%), but distribution patterns and related environmental drivers remain poorly understood. In the present study, based on a large publicly available dataset, we use general additive modelling (GAM) to identify explanatory variables for species richness of reptiles in Iran. Results indicate heterogeneity parameters (range +entropy) as the variables with the highest explanatory values. Based on the grid cells of the predicted environmental richness, using hotspot analysis, we suggest seven hotspots of reptile diversity (HRDs) across the country. Our results corroborate the previously recognized HRDs and detect three additional ones, located alongside the major mountain ranges around the central deserts plateau, particularly in the Zagros Mountains. Four of the largest HRDs (ca. 90%) situate within the Irano-Anatolian and Caucasus global biodiversity hotspot. In addition, our results reveal a large gap between identified HRDs and the current network of protected areas (PAs) in the country. While three of the detected HRDs in this study are partially touched (ca. 18%) by the PA network, overall, these areas are only covered by less than 10%. Therefore, the effectiveness of the current PAs for the protection of the reptile diversity of Iran is questionable.

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Many animals display complex colour patterns that comprise several adjacent, often contrasting colour patches. Combining patches of complementary colours increases the overall conspicuousness of the complex pattern, enhancing signal detection. Therefore, selection for conspicuousness may act not only on the design of single colour patches, but also on their combination. Contrasting long- and short-wavelength colour patches are located on the ventral and lateral surfaces of many lacertid lizards. As the combination of long- and short-wavelength-based colours generates local chromatic contrast, we hypothesized that selection may favour the co-occurrence of lateral and ventral contrasting patches, resulting in complex colour patterns that maximize the overall conspicuousness of the signal. To test this hypothesis we performed a comparative phylogenetic study using a categorical colour classification based on spectral data and descriptive information on lacertid coloration collected from the literature. Our results demonstrate that conspicuous ventral (long wavelength-based) and lateral (short wavelength-based) colour patches co-occur throughout the lacertid phylogeny more often than expected by chance, especially in the subfamily Lacertini. These results suggest that selection promotes the evolution of the complex pattern rather than the acquisition of a single conspicuous colour patch, possibly due to the increased conspicuousness caused by the combination of colours with contrasting spectral properties.

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The first record of the lacertid lizard Acanthodactylus boskianus for Iran is presented based on material collected by the author in 1995 and 1996 from 2 km west of Harsin, Kermanshah province, western Iran, on the Astragalus -covered sandy hills at about 1420 m elevation. Systematics and distribution of this lizard are discussed and its conventional known subspecies are questioned.

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An updated checklist of the herpetofauna of Iran is presented based on records of amphibian and reptile species whose presence has been confirmed in Iran as a result of extensive field expeditions, examination of herpetological collections, literature review, and personal communications from researchers. The herpetofauna of Iran consists of 13 species and five subspecies of frogs and toads belonging to five genera and four families, eight species of salamanders belonging to four genera and two families, nine species and six subspecies of turtles, terrapins and tortoises belonging to nine genera and six families, one species of crocodile, one species of amphisbaenian, more than 125 species of lizards belonging to 36 genera and eight families as well as 79 species of snakes belonging to 37 genera and six families

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Acanthodactylus hardyi Haas, 1957 has traditionally been treated as a subspecies of the widely distributed A. scutellatus, but was recently elevated to specific rank. The occurrence of A. hardyi in Jordan was discovered very recently. Four specimens collected from Batn al Ghul and Al Hazim have the diagnostic features of A. hardyi and are therefore assigned to this taxon. This finding is considered as further proof of the validity of the taxon and of its recognition at the specific level. Ecological requirements and niche partitioning are discussed in the light of the co- occurrence of A. hardyi with A. schmidti and/or A. opheodurus.

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Field observations on Acanthodactylus schmidti, A. gongrorhynchatus and A. haasi are recorded. Areas of sympatry occur between A. schmidti and A. gongrorhynchatus; A. gongrorhynchatus is sympatric with A. haasi and all three species occur in sympatry in eastern Saudi Arabia. Behaviour and ecology have been observed where all the three species are sympatric. Known distribution is recorded for the three species with a map for A. gongrorhynchatus and A. haasi.

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We present an annotated checklist for a total 241 reptiles and 22 amphibians including 5 frogs, 9 toads, 7 newts and salamanders, 1 crocodile, 1 worm lizard, 148 lizards, 79 snakes and 12 turtles and tortoises, includes the most scientific literature up to August 2014 and also based on several field surveys conducted in different Provinces of Iran from 2009 to 2014. We present an up-to-dated checklist of reptiles and amphibians in Iran. We provide a comprehensive listing of taxonomy, names, distribution and conservation status of all amphibians and reptiles of Iran. This checklist includes all recognized named taxa, English names for classes, orders, families, species, subspecies along with Persian names for species, including indication of native and introduced species. For the first time we report two non-native introduced reptiles from natural habitats of Iran. Of the total 22 species of amphibians in Iran, 6 (27.2%) are endemic and of the total 241 species of reptiles, 55 (22.8%) are endemic. Of the 22 amphibians species in Iran, 3 (13%) are Critically Endangered, 2 (9%) are Vulnerable and of the 241 reptile species 3 (1.2%) are Critically Endangered, 4 (1.6%) are Endangered and 10 (4.1%) are Vulnerable. Accordingly, this paper combines significant aspects of taxonomy, common names, conservation status and distribution of the Iranian herpetofauna.

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Die vorliegende Revision betrifft die Gattung Acanthodactylus (Damilie Lacertidae), die die Trocken- und Wüstengebiete des nördlichen Afrika und des südwestlichen Asiens bewohnt, mit Randpopulationen auf der Iberischen Halbinsel und auf Zypern. Mehr als 6000 Exemplare der Gattung, aus den bedeutendsten europäischen und amerikanischen Sammlungen, wurden untersucht. Zusätzlich wurden über 450 Röntgenaufnahmen für osteologische Untersuchungen ausgewertet. Die historische Übersicht behandelt in chronologischer Reihenfolge alle Arbeiten, die sich mit der Gattung Acanthodactylus beschäftigen, mit besonderer Berücksichtigung taxonomischer Studien. Ein beigegebener Bestimmungsschlüssel ermöglicht die Determination aller Arten der Gattung. Eine Reihe äußerer (Größe und Proportionen, Pholidose, Färbung und Zeichnung) und innerer (d.h. osteologischer) Merkmale wurde im Hinblick auf ihre Variabilität untersucht. Dann wurde ein Land ausgesucht, z.B. Ägypten, aus dem eine gute Materialbasis zur Verfügung stand. Für einen bestimmten Fundort in diesem Lande wurden sodann einige Kombinationen von Merkmalszuständen ermittelt, die sich aus dem Auftreten verschiedener Arten ergaben. Derselbe Vorgang wurde sodann auf den Rest Ägyptens übertragen, und die Merkmalskombinationen stellten sich als übereinstimmend heraus; sie erlaubten dadurch eine sichere Zuordnung von Tieren zu folgen Arten: A. boskianus, A. scutellatus und A. pardalis. Durch die Ausdehnung der Untersuchung nach Westen und Osten kamen weitere Taxa hinzu. Besonderer Aufmerksamkeit wurde diesen Merkmalskombinationen im Hinblick auf sympatrisches oder allopatrisches Auftreten der betroffenen Arten gezollt, mit dem Ergebnis, daß es in einigen Fällen möglich war, abzusichern, daß es sich um Populationen derselben Art handelt. Die Gattung Acanthodactylus wurde in mehrere Artengruppen gegliedert, die sich durch engere Beziehungen ihrer Arten untereinander auszeichnen. Die erste ist die micropholis-Gruppe mit der einzigen Art A. micropholis. Sie wird als die ursprünglichste der gesamten Gattung angesehen. Eine weitere Gruppe ist die boskianus-Gruppe, mit den Arten A. boskianus und A. schreiberi. Erstere wird ausführlich analysiert im Hinblick auf ihre außerordentlich große geographische Variabilität. Die yemenicus-Gruppe besiedelt die Arabische Halbinsel und besteht aus A. yemenicus sp.n., A. masirae, A. opheodurus und A. felicis. Eine weitere Gruppe ist die tristrami-Gruppe mit den Arten A. tristrami und A. robustus. Für erstere wird die Validität der Unterart orientalis verneint, die für iracensis dagegen bejaht. In die grandis-Gruppe wird hier nur A. grandis gestellt, während A. fraseri als dessen Synonym aufgefaßt wird. Die erythrurus-Gruppe enthält A. erythrurus, A. savignyi, A. blanci, A. boueti und A. guineensis. Letzterer rangierte bislang in der Gattung Eremias, gehört aber nach den hier vorgelegten Befunden in die erythrurus-Gruppe von Acanthodactylus. In der pardalis-Gruppe sind enthalten: A. pardalis, A. bedriagai, A. maculatus, A. spinicauda und A. busacki sp.n. aus Marokko. Die scutellatus-Gruppe besteht aus A. scutellatus, A. aureus, A. dumerili und A. longipes. Die letzte Gruppe ist die cantoris-Gruppe mit den Arten A. cantoris, A. arabicus, A. schmidti, A. blanfordi, A. gongrorhynchatus und A. haasi. Eine Bibliographie über die Gattung beschließt die Arbeit. Für jede Art werden Diagnosen, Verbreitungskarten, Synonymien, Beschreibungen und Materiallisten der untersuchten Tiere sowie auch Strichzeichnungen gegeben.

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In this paper, the evolution and ecology of directional asymmetry (DA) during the developmental trajectory (DT) is compared with that of its product, morphological DA (MDA). DT and MDA are calculated for two bilateral morphological scale characters of lizards, the number of subdigital lamellae beneath the fourth toe in 10 agamid and 28 lacertid taxa, and the number of rows of ventral scales in 12 lacertid taxa. MDA, the subtraction between left and right sides (classical measure of DA), is functional in adult animals. Results confirm the hypodiesis that, in DT, the regression parameters a (constant) and b (regression slope) of counts on the right side with those on the left describe a developmental process. No phylogenetic or environmental effects were observed on a and b, but analyses considering both a and b together show non-random phyletic patterns. Independent analyses deduced the same ancestral DT in Agamidae and Lacertidae. In Lacertidae, distance between pairs of taxa in a + b (standardized values) correlates positively with die phylogenetic distance between taxa. Phyletic trends in MDA are indirect, and due to the link of MDA with a + b. The MDA of species is more dissimilar in sympatry than in allopatry. The phyletic trends suggest evolution of DT, while die association of MDA witii sympatry suggests that ecological pressures shape MDA in adult animals. Evolution of DT is independent from tiiat of its product, MDA–adaptive determinism defines the result of, but not the mechanistic process of, development. Deterministic environmental processes define MDA, and deterministic evolutionary processes define the interactive result of a and b, but not each separately. According to circumstances, different DTs produce similar or different MDA, and a particular DT can produce different MDAs.

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We present a comprehensive summary of the distribution of the lizards of Iran accompanied by an annotated checklist. The updated maps of distribution of all 146 species of 41 genera of 11 families are based on all available bibliographic records, catalogues of museum collections and our own field observations. The final dataset used for the distribution maps contains 8525 georeferenced records and cover 41% of the country when plotted on a grid of 0.25° × 0.25° resolution. The dataset is publicly accessible through GBIF portal (http://www.gbif.org/dataset/7db4f705-61ae-4c6e-9de2-06674e7d46b2). Following the latest biogeographic division of the country, ~53% of the species (76 species) inhabit the Iranian Province, ~41% (60 species) the Western Asian mountain transition zone, ~9% (13 species) the Turanian Province, and ~18% (27 species) the Arabian Province. In addition, ~2% (3 species) reach Iran from the Indo-Malay biogeographic region and ~2% (3 species) are believed to have been introduced to Iran by humans. Endemic species (46) represent ~32% of the known species diversity. The most species-rich family of lizards in Iran is Lacertidae with 47 species, followed by Gekkonidae (41), Agamidae (18), Scincidae (15), Phyllodactylidae (10), Sphaerodactylidae (4), Eublepharidae and Uromastycidae (3), Anguidae and Varanidae (2), and Trogonophidae with one representative.

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Aim: Deserts are generally perceived as areas of low diversity, and hence receive little attention from researchers and conservationists. Squamates are the dominant group of vertebrates in arid regions, and as such represent an ideal model to study biodiversity patterns in these areas. We examine spatial patterns of diversity, evolutionary history and endemism of terrestrial squamates of the Arabian Peninsula and test hypotheses on the role of topography and history of isolation so as to identify possible environmental drivers of diversification. Location: The Arabian Peninsula. Taxon: Squamate reptiles (Squamata; lizards and snakes). Methods: We generated distribution maps for all Arabian squamate species (including yet undescribed) and reconstructed their phylogenetic relationships using existing and newly produced genetic data for nearly all the species. We assessed patterns of the distribution of species richness, phylogenetic diversity and phylogenetic en demism across the peninsula to identify areas that could be considered evolutionary or endemicity hotspots for squamates. We evaluated community turnover across the peninsula and assessed the possible environmental drivers affecting the diversity of Arabian squamates in a regression framework. Results: The main hotspots of Arabian squamate diversity are mostly along the mountains that rim the peninsula while the most arid, central regions support a low diversity of species. The distribution of the phylogenetic diversity mirrors that of the species richness. Phylogenetic endemism is also highest in the mountains, especially when only endemic species are analysed. The deserts of northern Arabia are poor in terms of species richness and they show low connectivity to the peninsular communities. Topographic heterogeneity is the strongest predictor for Arabian squamates, followed by elevation. There is no correlation between richness and temperature. Main conclusions: The mountains of Arabia support rich and unique squamate communities that are dominated by local radiations of closely related and narrow-ranging species. In particular, the Asir Mountains of SW Arabia, Dhofar Province of Oman and the Hajar Mountains of northern Oman and UAE show unprecedented levels of squamate endemism and phylogenetic endemism. While many generalist species range across Arabia, a low number of species is shared between the peninsula and mainland Asia, indicating an effective isolation of the Arabian fauna. Squamate richness is highest in heterogeneous, topographically complex habitats.

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This paper provides an updated checklist of the United Arab Emirates (UAE) native and alien herpetofauna. The UAE, while largely a desert country with a hyper-arid climate, also has a range of more mesic habitats such as islands, mountains, and wadis. As such it has a diverse native herpetofauna of at least 72 species as follows: two amphibian species (Bufonidae), five marine turtle species (Cheloniidae [four] and Dermochelyidae [one]), 42 lizard species (Agamidae [six], Gekkonidae [19], Lacertidae [10], Scincidae [six], and Varanidae [one]), a single amphisbaenian, and 22 snake species (Leptotyphlopidae [one], Boidae [one], Colubridae [seven], Hydrophiidae [nine], and Viperidae [four]). Additionally, we recorded at least eight alien species, although only the Brahminy Blind Snake (Ramphotyplops braminus) appears to have become naturalized. We also list legislation and international conventions pertinent to the herpetofauna.

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Acanthodactylus lizards are among the most diverse and widespread diurnal reptiles in the arid regions spanning from North Africa across to western India. Acanthodactylus constitutes the most species-rich genus in the family Lacertidae, with over 40 recognized species inhabiting a wide variety of dry habitats. The genus has seldom undergone taxonomic revisions, and although there are a number of described species and species-groups, their boundaries as well as their interspecific relationships are largely unresolved. We constructed a multilocus phylogeny, combining data from two mitochondrial (12S, cytb) and three nuclear (MC1R, ACM4, c-mos) markers for 302 individuals belonging to 36 known species, providing the first large-scale time-calibrated molecular phylogeny of the genus. We evaluated phylogenetic relationships between and within species-groups, and assessed Acanthodactylus biogeography across its known range. Acanthodactylus cladogenesis is estimated to have originated in Africa due to vicariance and dispersal events from the Oligocene onwards. Radiation started with the separation into three clades: the Western and scutellatus clades largely distributed in North Africa, and the Eastern clade occurring mostly from Arabia to south-west Asia. Most Acanthodactylus species diverged during the Miocene, possibly as a result of regional geological instability and climatic changes. We support most of the current taxonomic classifications and phylogenetic relationships, and provide genetic validity for most species. We reveal a new distinct blanfordii species-group, suggest new phylogenetic positions (A. hardyi, A. masirae), and synonymize several species and subspecies (A. lineomaculatus, A. boskianus khattensis and A. b. nigeriensis) with their phylogenetically closely-related species. We recommend a thorough systematic revision of taxa exhibiting high levels of intraspecific variability as well as clear evidence of phylogenetic complexity such as A. guineensis, A. grandis, A. dumerilii, and A. senegalensis and the pardalis and erythrurus species-groups.