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Cyrtodactylus robustus KRAUS, 2008

IUCN Red List - Cyrtodactylus robustus - Least Concern, LC

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Common Names 
SynonymCyrtodactylus robustus KRAUS 2008
Cyrtodactylus robustus — TALLOWIN et al. 2018 
DistributionPapua New Guinea (Rossel Island, Milne Bay Province), elevation 50-720 m.

Type locality: along Wabu River, N slope Mt. Rossel, 11.34194ºS, 154.21921ºE, 320 m, Rossel Island, Milne Bay Province, Papua New Guinea.  
TypesHolotype: BPBM 19735 (field tag FK 10445), mature male, collected by native collectors for F. Kraus, 14 May 2004. 
DiagnosisDiagnosis: A very large (127–161 mm) species of Cyrtodactylus having a single row of enlarged subcaudal scales; enlarged dorsal tubercles conical, keeled, ~5–7 times size of adjacent granules (Fig. 2E), in 24–30 rows; lateral tubercles distinct, ~4–7 times size of adjacent granules and larger than scales of lateral skin fold, which contains tubercles; 38–50 midbelly scale rows; precloacal/femoral pores 75–85, in a single continuous row; lamellae under fourth toe 25–32; head rather wide (HW/HL = 0.69–0.84, mean 0.77); four or five dark dorsal bands between head and hindlimb insertion, of more-or-less even width, margined in black, with 5–10 tubercles sagitally through 3rd dark band; dark spots usually present on light dorsal ground color; venter densely speckled with dark brown; mouth and cloacal linings burnt orange; and posterior supralabials dirty white. 
CommentEcology: commonly in primary and secondary rainforest.

Sympatry: syntopically with Gekko vittatus, Nactus acutus Kraus, and two undescribed species of Nactus, and it may occur syntopically with Gehyra
mutilata, G. oceanica, and Lepidodactylus lugubris.

Abundance: only known from its original description (Meiri et al. 2017). 
EtymologyThe trivial epithet is a Latin masculine adjective meaning “strong like an oak” and is in reference to the large size and stout habitus of the species. 
  • Grismer, L. L., Wood, P. L., Poyarkov, N. A., Le, M. D., Kraus, F., Agarwal, I., ... & Grismer, J. L. 2021. Phylogenetic partitioning of the third-largest vertebrate genus in the world, Cyrtodactylus Gray, 1827 (Reptilia; Squamata; Gekkonidae) and its relevance to taxonomy and conservation. Vertebrate Zoology 71: 101–154 - get paper here
  • Kraus, Fred 2008. Taxonomic partitioning of Cyrtodactylus louisiadensis (Lacertilia: Gekkonidae) from Papua New Guinea. Zootaxa 1883: 1–27 - get paper here
  • Meiri, Shai; Aaron M. Bauer, Allen Allison, Fernando Castro-Herrera, Laurent Chirio, Guarino Colli, Indraneil Das, Tiffany M. Doan, Frank Glaw, Lee L. Grismer, Marinus Hoogmoed, Fred Kraus, Matthew LeBreton, Danny Meirte, Zoltán T. Nagy, Cristiano d 2017. Extinct, obscure or imaginary: the lizard species with the smallest ranges. Diversity and Distributions - get paper here
  • Tallowin, O. J. S., Tamar, K., Meiri, S., Allison, A., Kraus, F., Richards, S. J., & Oliver, P. M. 2018. Early insularity and subsequent mountain uplift were complementary drivers of diversification in a Melanesian lizard radiation (Gekkonidae: Cyrtodactylus). Molecular Phylogenetics and Evolution 125: 29–39 - get paper here
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