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Nactus sphaerodactylodes KRAUS, 2005

IUCN Red List - Nactus sphaerodactylodes - Least Concern, LC

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Common Names 
SynonymNactus sphaerodactylodes KRAUS 2005
Nactus sphaerodactylodes — PAPENFUSS et al. 2010 
DistributionPapua New Guinea (Sudest, Misima, and Woodlark islands)

Type locality: Araeda, Sudest Island, 11.43624° S, 153.43008° E, 1-20 m elevation, Milne Bay Province,
Papua New Guinea.  
TypesHolotype: BPBM 20764 (field tag FK 9887), adult male, collected by local villagers. 
DiagnosisDiagnosis: A small (SV = 20.4–26.0 mm, mean 24.2 mm) species of Nactus lacking dorsal tubercles; and having granular, largely tricarinate dorsal (Fig. 2) and ventral scales; lamellate, unexpanded subdigital lamellae; 10-13 lamellae under the 4th toe; a single row of scales between the orbit and supralabials; claws lying within four scales; granular postmentals; elongate first infralabials; 4–5 supralabials to center of eye and 6–7 to rictus; 5–7 infralabials; enlarged postnasals; smooth scales on the tail; oval ear opening; relatively broad head (HW/HL = 0.71–0.79); short, broad snout (EN/SV = 0.070–0.086, IN/SV = 0.038–0.049, EN/IN = 1.5–2.1); large eye (EE/SV = 0.085–0.103) and interorbital distance (ID/SV = 0.063–0.083); relatively broad tail (TW/TL = 0.12–0.16); four sternal/xiphisternal ribs; and dark brown dorsal color, usually with scattered, obscure darker and lighter brown punctations and irregular markings, these sometimes coalescing to form obscure, irregular chevrons. 
EtymologyThe name is a combination of the genus name “Sphaerodactylus” and the Greek suffix “-odes”, meaning “like”, in reference to the superficial resemblance of the new species to geckos of that American genus. 
  • HEINICKE, MATTHEW P.; ELI GREENBAUM, TODD R. JACKMAN, AARON M. BAUER 2010. Molecular Phylogenetics of Pacific Nactus (Squamata: Gekkota: Gekkonidae) and the Diphyly of Australian Species. Proceedings of the California Academy of Sciences, 61 (17): 633-646 - get paper here
  • Jackman, Todd R.; Aaron M. Bauer, Eli Greenbaum 2008. Phylogenetic relationships of geckos of the genus Nactus and their relatives (Squamata: Gekkonidae). Acta Herpetologica 3 (1): 1-18
  • Kraus, Fred 2005. The genus Nactus (Lacertilia: Gekkonidae): a phylogenetic analysis and description of two new species from the Papuan Region. Zootaxa 1061:1-28 - get paper here
  • Rösler, Herbert 2017. Gecko-Chorologie (Squamata: Gekkota). Gekkota (4): 1-160
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