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Rhacodactylus trachycephalus (BOULENGER, 1878)

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Higher TaxaDiplodactylidae, Gekkota, Sauria, Squamata (lizards: geckos)
Common NamesE: Tough-snouted Giant Gecko 
SynonymChameleonurus trachycephalus BOULENGER 1878
Rhacodactylus trachyrhynchus trachycephalus — MYERS 2005
Rhacodactylus trachyrhynchus trachycephalus — KAVERKIN 2009
Rhacodactylus trachycephalus — BAUER et al. 2012 
DistributionC/S New Caledonia (Môrô Island), Isle of Pins (?)

Type locality: New Caledonia: Île des Pins.  
Reproductionovovivparous; Rhacodactylus trachycephalus and R. trachyrhynchus are the only (ovo-) ovovivparous Rhacodactylus species. 
Typeslectotype (IRSNB 2.532) and paralectotype (IRSNB 2.533) 
DiagnosisDiagnosis. Rhacodactylus trachycephalus may be distinguished from R. trachyrhynchus, the only other New Caledonian giant gecko with a rugose snout by its smaller size (maximum SVL 140 mm versus 190 mm), larger eye size relative to snout length and eye-ear distance, lower number of midbody scale rows (maximum 111 versus minimum 119) (fide Seipp & Henkel 2011), exclusion of the rostral from the nostril (versus rostral contacts the nostril or very narrowly excluded in R. trachyrhynchus), and smaller, less rugose scales in the loreal region (Fig. 8 in BAUER et al. 2012). 
CommentAbundance: Uncommon and restricted to a few localities. 
  • Bauer, A. M. & SADLIER, R. A. (eds.) 2000. The herpetofauna of New Caledonia. Contributions to Herpetology, 17; Society for Study Amphibians and Reptiles, Ithaca, New York.
  • Bauer, A.M. 1990. Phylogenetic systematics and biogeography of the Carphodactylini (Reptilia: Gekkonidae). Bonner zool. Monogr. 30: 1-220 - get paper here
  • Bauer, A.M. & Sadlier,R.A. 1993. Systematics, biogeography and conservation of the lizards of New Caledonia. Biodiv. Lett. 1: 107-122 - get paper here
  • Bauer, A.M., and Sadlier, R.A. 2001. New data on the distribution, status, and biology of the giant New Caledonian geckos (Squamata: Diplodactylidae: Rhacodactylus spp.). Amphibian & Reptile Conservation 2 (1): 24-29 [2000] - get paper here
  • Bauer, Aaron M. 1995. Geckos of the genus Rhacodactylus. Reptiles 3 (7): 32-49
  • BAUER, AARON M.; TODD R. JACKMAN, ROSS A. SADLIER & ANTHONY H. WHITAKER 2012. Revision of the giant geckos of New Caledonia (Reptilia: Diplodactylidae: Rhacodactylus). Zootaxa 3404: 1–52 - get paper here
  • Bauer, Aaron M.;Sadlier, Roass A. 1994. The terrestrial herpetofauna of the Ile des Pins, New Caledonia. Pacific Science 48 (4): 353-366
  • Bocage, J. V. Barboza du. 1873. Mélanges erpétologiques. l. Note sur quelques geckotiens nouveaux ou peu connus de la Nouvelle Calédonie. Jornal de Sciencias Mathematicas, Physicas e Naturaes, Lisboa, 4: 201—207. - get paper here
  • Böhme, W. & Henkel, F. W. 1985. Zur Kenntnis der Herpetofauna Neukaledoniens, speziell der Gattung Rhacodactylus. Herpetofauna 7 (34): 23-29 - get paper here
  • Boulenger, G. A. 1878. Description d’un genre nouveau et d’une espece nouvelle de la famille des geckotides. Bulletin de la Société Zoologique de France, 3:68-70 - get paper here
  • Boulenger, G. A. 1879. Sur l’identité spéficifique de Chameleonurus trachycephalus Boulenger et Platydactylus chahoua Bavay. Bull. Soc. zool. France 4: 141 - get paper here
  • Boulenger, G.A. 1885. Catalogue of the lizards in the British Museum (Nat. Hist.) I. Geckonidae, Eublepharidae, Uroplatidae, Pygopodidae, Agamidae. London: 450 pp. - get paper here
  • Good, D. A., A. M. Bauer & Sadlier, R.A. 1997. Allozyme evidence for the phylogeny of giant New Caledonian geckos (Squamata: Diplodactylidae: Rhacodactylus), with comments on the status of R. leachianus henkeli. Australian Journal of Zoology 45: 317-330 - get paper here
  • Henkel, Friedrich Wilhelm 2008. Beobachtungen an Neukaledonischen Riesengeckos in der Natur. Draco 9 (36): 14-22 - get paper here
  • Henkel,F.W. 1986. Bemerkungen über einige Rhacodactylus-Arten. Herpetofauna 8 (42): 6-8 - get paper here
  • Hudel, L., Georg, L. and Henkel, L. 2020. New distribution records: four species of giant geckos (Gekkota: Diplodactylidae) occur in syntopy on Ile des Pins, New Caledonia. Herpetology Notes 13: 261-265. - get paper here
  • Kaverkin, Yuri 2008. Haltung und Nachzucht von Rhacodactylus trachyrhynchus trachycephalus. Draco 9 (36): 37-41 - get paper here
  • Myers, Alan 2005. Reproduction in the Rough-snouted Gecko Rhacodactylus trachyrhynchus trachycephalus (Boulenger, 1878). Gekko 4 (2): 37-39
  • Rösler, H. 2000. Kommentierte Liste der rezent, subrezent und fossil bekannten Geckotaxa (Reptilia: Gekkonomorpha). Gekkota 2: 28-153
  • Rösler, Herbert 1995. Geckos der Welt - Alle Gattungen. Urania, Leipzig, 256 pp.
  • Roux,J. 1913. Les reptiles de de la Nouvelle-Calédonie et des îles Loyalty. In: Nova Caledonia, Recherches scientifiques en Nouvelle Calédonie et aux Iles Loyalty. Zoologie. (vol. 1, L. 2). Sarasin, F. & Roux,J. (eds.). C.W. Kreidel’s Verlag, Wiesbaden, pp. 79-160 - get paper here
  • Schönecker, P. 2015. Rhacodactylus – Vielfältige Riesen aus Neukaledonien. Reptilia (Münster) 20 (113): 14-23 - get paper here
  • SCHÖNECKER, Patrick & Christian LANGNER 2012. Neue Namen und alte Bekannte – Gattungsrevision der Neukaledonischen Riesengeckos (Rhacodactylus) und weiterer Geckogattungen Neukaledoniens. Terraria-Elaphe 2012 (6): 58-65 - get paper here
  • Vences M, Henkel FW & Seipp,R 2001. Molekulare Untersuchungen zur Phylogenie und Taxonomie der Neukaledonischen Geckos der Gattung Rhacodactylus (Reptilia: Gekkonidae). Salamandra 37 (2): 73-82 - get paper here
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