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Art: |
| Mesalina saudiarabica MORAVEC et al., 2017 |
Synonyme: |
| Mesalina brevirostris KAPLI et al., 2015 Mesalina sp. KAPLI et al., 2015 |
Typen: |
| Holotype: ZFMK 91912, subadult male, collected in October 2006 by T. Wilms. MorphoBank pictures: M407306–M407312. Paratype. ZFMK 86583, subadult male, Mahazat as-Sayd, near Al Muwayh, Makkah Province, Saudi Arabia, 22.395N 41.753E, 960 m a.s.l., collected in October 2006 by T. Wilms. MorphoBank picture: M410851. |
Terra Typica: |
| Mahazat as-Sayd, Makkah Province, Saudi Arabia, 22.237N, 41.843E, 1.000 m NN. |
Taxonomische Hinweise:
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| Mesalina saudiarabica unterscheidet sich in erster Linie durch ihre genetische Differenzierung, sowohl auf der mtDNA- als auch auf der nDNA-Ebene, von anderen Spezies des Komplexes. Zudem ist Mesalina saudiarabica geographisch vom Rest des Komplexes isoliert. Darüber hinaus kann sie morphologisch von M. microlepis durch 1-2 große, semitransparente Schuppen im unteren Augenlid unterschieden werden (bei M. microlepis sind es mehr als 3 annähernd gleich große, semitransparente Schuppen), sowie durch einer niedrigeren Anzahl von Halsbandschuppen (6–8 vs. 10–13; t-Test t = 5.01, p < 0.001), einer niedrigeren Anzahl der dorsalen Schuppen (41-42 vs. 48- 61; t-Test t = 3,78, p <0,005), einer niedrigeren Anzahl von Präanalschuppen (2-3 vs. 4; t-Test t = 8,14, p <0,001) und durch einer niedrigeren Anzahl von Femoralporen bei männlichen Tieren (12-13 vs. 15-20; t-Test t = 5,12, p <0,001). Die niedrigere Anzahl von Halsbandschuppen unterscheidet die neue Spezies auch von M. bernoullii (6-8 vs. 8-13; t-Test t = 3,14, p <0,005) und M. brevirostris s. s, wenn auch nicht signifikant nach der Bonferroni-Korrektur (6-8 vs. 8-10; t-Test t = -2,67, p <0,05).
Quelle: ŠMÍD et al., 2017. |
Relevante taxonomische Literatur:
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Šmíd, J. & Moravec, J. & Gvoždík, V. & Štundl, J. & Frynta, D. & Lymberakis, P. & Kapli, P. & Wilms, T. & Schmitz, A. & Shobrak, M. & Hosseinian Yousefkhani, S. & Rastegar-Pouyani, E. & Castilla, A.M. & Els, J. & Mayer, W. (2017) - Cutting the Gordian Knot: Phylogenetic and ecological diversification of the Mesalina brevirostris species complex (Squamata, Lacertidae). - Zoologica Scripta, 46 (6): 649-664. × Mesalina are small lacertid lizards occurring in the Saharo-Sindian
deserts from North Africa to the east of the Iranian plateau. Earlier phylogenetic studies indicated that there are several species complexes within the genus and that thorough taxonomic revisions are needed. In this study, we aim at resolving the phylogeny and taxonomy of the M. brevirostris species complex distributed from the Middle East to the Arabian/Persian Gulf region and Pakistan. We sequenced three mitochondrial and three nuclear gene fragments, and in combination with species delimitation and species-tree
estimation, we infer a time-calibrated phylogeny of the complex. The
results of the genetic analyses support the presence of four clearly delimited species in the complex that diverged approximately between the middle Pliocene and the Pliocene/Pleistocene boundary. Species distribution models of the four species show that the areas of suitable habitat are geographically well delineated and nearly allopatric, and that most of the species have rather divergent environmental niches.
Morphological characters also confirm the differences between the species, although sometimes minute. As a result of all these lines of evidence, we revise the taxonomy of the Mesalina brevirostris species complex. We designate a lectotype for Mesalina brevirostris Blanford, 1874; resurrect the available name Eremias bernoullii Schenkel, 1901 from the synonymy of M. brevirostris; elevate M. brevirostris microlepis
(Angel, 1936) to species status; and describe Mesalina saudiarabica, a new species from Saudi Arabia.
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