Cyrtodactylus sermowaiensis (DE ROOIJ, 1915)
Can you confirm these amateur observations of Cyrtodactylus sermowaiensis?
|Higher Taxa||Gekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)|
|Common Names||E: De Rooji’s bent–toed gecko, DeRooij's Bow-fingered Gecko|
G: De Rooijs Bogenfingergecko
|Synonym||Gymnodactylus sermowaiensis DE ROOIJ 1915: 9|
Gymnodactylus (Cyrtodactylus) sermowaiensis — WERMUTH 1965: 67
Cyrtodactylus sermowaiensis — BROWN & PARKER 1973
Gonydactylus sermowaiensis — KLUGE 1991
Cyrtodactylus (Cyrtodactylus) sermowaiensis — RÖSLER 2000: 67
Cyrtodactylus sermowaiensis — OLIVER et al. 2011
Cyrtodactylus sermowaiensis — OLIVER et al. 2020
|Distribution||Papua New Guinea (Sermowai River)|
Type locality: Sermowai River, New Guinea.
|Types||Holotype: ZMA.RENA 10910|
|Diagnosis||Diagnosis. A species of Cyrtodactylus that can be distinguished from all other species of Melanesian Cyrtodactylus by the following unique combination of character states: moderate size (adult SVL 78–112 mm); continuous medial row of transversely enlarged subcaudal scales absent; enlarged femoral scales absent; precloacal or femoral pores in males absent; dorsal colouration on body of 5–6 irregular dark-brown dorsal bands or series of blotches (not including nuchal band) alternating with weaker brown interstitial bands; dorsal and lateral tubercles present on proximal and distal segments of all limbs; dorsal tubercles at mid-point of body between lateral skin folds in 16–19 rows; tubercles across supraand interorbital regions usually <10; majority (>90%) of tubercles within dark-brown dorsal bands also dark brown and not contrasting against surrounding pigmentation; pale yellow lateral spots absent or at most sparse on head and torso; pale regions on dorsal surfaces of neck and posterior head lacking aggregations of subcircular markings; and nuchal band with few or no subcircular indentations along its margins (Oliver et al. 2020: 344).|
Comparisons with other species. Cyrtodactylus sermowaiensis can be readily distinguished from all other recognised Melanesian Cyrtodactylus by the absence of enlarged femoral scales in both sexes and the absence of precloacal or femoral pores in males. The geographic range of Cyrtodactylus sermowaiensis only overlaps with a small number of Cyrtodactylus. In addition to the characters above, C. sermowaiensis can be further distinguished from these overlapping Cyrtodactylus species as follows: from C. equestris and C. rex by its smaller size (max SVL 112 mm versus 139 mm and 172 mm respectively), absence of enlarged tubercles on the throat (versus present) and dorsal pattern consisting of 5–6 dark-brown transverse bands or blotches (versus 2–3 dark to medium-brown bands or blotches); from C. mimikanus by lacking transversely widened subcaudals (versus present) and dorsal pattern consisting of dark-brown transverse markings with no light border and similarly coloured interstitial bands (versus thin dark-brown transverse bands with a light border and no interstitial bands); and from C. boreoclivus by lacking transversely widened subcaudals (versus present) and in having a light-brown dorsal ground colouration (versus mid-brown) (Oliver et al. 2020: 344).
|Etymology||Named after the type locality.|