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Hemidactylus coalescens WAGNER, LEACHÉ & FUJITA, 2014

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos) 
Subspecies 
Common Names 
SynonymHemidactylus coalescens WAGNER, LEACHÉ & FUJITA 2014: 7
Hemidactylus coalescens LEACHÉ & FUJITA 2010 (nom. nud.) 
DistributionS Cameroon, Gabon and Congo (Brazzaville)

Type locality: Cameroon, Campo Region, Nkoelon, 2.3972° N, 10.04515° E, 85 m  
Reproduction 
TypesHolotype. ZFMK 87679 (Fig. 4), adult male, collected by Michael F. Barej and Julia Wurstner on 27 October 2007.
Paratypes. ZFMK 87680-82, same data as the holotype. 
CommentDiagnosis. A medium sized species of Hemidactylus, with a max. SVL of 78 mm, a maximum total length of 174 mm, a more elongated head than the other species of the H. fasciatus group, and three enlarged internasal scales present in most specimens. It is unique in coloration by possessing body crossbands which are more narrow than the pale interspaces; the interspaces contain indistinct dark bands which are not connected at the vertebrate; by having the first body crossband restricted to the neck (vs. reaching the cranium as in the other species); by having the last crossband on the body between the legs not in contact with the hindlimbs (vs. in contact); and by having a distinctly fine narrow dark stripe on the side of the head between eye and ear, as the extension of the crossband on the neck (vs. a band slightly narrower or as broad as the crossband in the other species).

Relationships. This species includes all populations that cluster with those from the southern portion of the Congolian rainforest (southern Cameroon, Gabon and Congo) presented by Leaché & Fujita (2010), with strong support in the Bayesian species delimitation model. The SNP loci used by Leaché et al. (2014) provide strong support placing this taxon in a clade with H. biokoensis sp. n. Carlino & Pauwels 2015 consider H. coalescens as a synonym of H. fasciatus. 
EtymologyThis species is named after the coalescent process used to delimit the species. 
References
  • Bauer, Aaron M.; James F. Parham, Rafe M. Brown, Bryan L. Stuart, Lee Grismer, Theodore J. Papenfuss, Wolfgang Böhme, Jay M. Savage, Salvador Carranza, Jesse L. Grismer,, Philipp Wagner, Andreas Schmitz0, Natalia B. Ananjeva and Robert F. Inger 2010. Availability of new Bayesian-delimited gecko names and the importance of character-based species descriptions. Proc. R. Soc. B - doi:10.1098/rspb.2010.1330 - get paper here
  • Carlino, P. & Pauwels, O.S.G. 2015. An Updated Reptile List of Ivindo National Park, the Herpetofaunal Hotspot of Gabon. Bull. Chicago Herp. Soc. 50(3): 25-39 - get paper here
  • Kwet, Axel 2015. Liste der im Jahr 2014 neu beschriebenen Reptilien. Terraria-Elaphe 2015 (3): 50-64 - get paper here
  • Rösler, Herbert 2015. Bemerkungen über einige Geckos der Zoologischen Staatssammlung München. Gekkota, Suppl. (2): 3-54
  • Wagner, P., Leaché, A. & Fujita, M.K. 2014. Description of four new West African forest geckos of the Hemidactylus fasciatus Gray, 1842 complex, revealed by coalescent species delimitation. Bonn zoological Bulletin 63 (1): 1–14 - get paper here
 
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