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Cyrtodactylus derongo BROWN & PARKER, 1973

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Common NamesE: Derongo Bow-fingered Gecko 
SynonymCyrtodactylus derongo BROWN & PARKER 1973
Gonydactylus derongo — KLUGE 1991
Cyrtodactylus (Cyrtodactylus) derongo — RÖSLER 2000: 65 
DistributionNWC Papua New Guinea (Derongo area, Alice River System; ~400 m elevation)

Type locality: Derongo area at an elevation of 1300 feet, Alice River system, tributary to the upper Fly River, Papua, New Guinea.  
TypesHolotype: MCZ R126205 
DiagnosisDiagnosis. A Cyrtodactylus with small scales on postero- ventral surface of thighs meeting the enlarged scales of antero- ventral surface at a sharp boundary; the rows of enlarged femoral scales forming a continuous series with preanal rows; enlarged preanal scales posterior to the pore series absent; dorsal ground color dark brown with very faint darker blotches en-
ilarly useful in separating most of the New Guinea species. have not had the opportunity to examine specimens of C. novae- guineae.
Cyrtodactylus derongo new species
closing irregular rows of large, white tubercles
(Fig. 1)

Description. A moderately large Cyrtodactylus; four adult females measure 105-112 mm snout-vent length, one specimen 81 mm in snout-vent length is immature; head about one and one-half times its breadth; eye, large, its diameter about one- third of the length of the head and about equal to its distance from, the nostril; diameter of ear opening less than half its dis- tance from the eye; head covered with granules, very small posteriorly and somewhat larger anteriorly; scattered, moderate- sized, pointed tubercles as far anterior as the interorbital region rostral large, rectangular, its breadth about 60 percent of its length, nostril bordered by the rostral, supranasal, first labial and 3 small shields; upper labials 11 or 12; lower labials 11 to
13; supranasals large, separated by 1 or 2 scales; one large pair of postmentals in contact posteriorly for about half their length; distinct lateral fold lacking, but its normal position marked by a row of flattish tubercles separated from one another by several smaller scales; in the mid-body region, 20 irregular lines of dorsal tubercles between the aforementioned rows of flattish scales; 15 to 1 8 rows in the axillary region ; some of the tubercles are white and tend to form widely separated irregular transverse lines, 8 to 10 between the nape and the hind limbs; undersurface of head with small granules; venter with about 46 to 48 rows of scales at the mid-body between the ventrolateral rows of tuber- cles, small and granular laterally, but merging gradually with the large cycloid scales of the mid-venter; the large preanal-pore scales in a \'ery shallow "/\" continuous with a row of femoral- pore scales that are gradually reduced in size along the femur; those anterior to the pore row somewhat enlarged, flattish scales on both the thighs and the preanal region, the latter merging with
those of the \enter; posteriorly the pore series is met abruptly by small granular scales in both the preanal and femoral regions; 24 to 26 rows of lamellae and scales beneath the fourth toe; tail only slightly depressed, with square or rectangular plates toe; tail only slightly depressed, with square or rectangular plates on the ventral surface and with everv fourth or fifth scale dis- tinctly enlarged.

Comparisons. Differs from other Indo-Australian species of Cyrtodactylus in the rather uniformly dark ground color of dor- sum marked by large white tubercles. The color pattern is remi- niscent of that of Underwoodisaurus milU, but in the latter the white patches in\'olve small surrounding scales, and the patches may be fused into partial or complete transverse bands. Com- pared to other New Guinean species, C. derongo is somewhat 
CommentAbundance: only known from its original description (Meiri et al. 2017). 
  • Brown, Walter C. & Parker, Fred 1973. A new species of Cyrtodactylus (Gekkonidae) from New Guinea with a key to species from the island. Breviora (417): 1-7 - get paper here
  • Günther, R. & H. Rösler 2002. Eine neue Art der Gattung Cyrtodactylus GRAY, 1827 aus dem Westen von Neuguinea (Reptilia: Sauria: Gekkonidae). Salamandra 38 (4): 195-212 - get paper here
  • Kraus, Fred 2008. Taxonomic partitioning of Cyrtodactylus louisiadensis (Lacertilia: Gekkonidae) from Papua New Guinea. Zootaxa 1883: 1–27 - get paper here
  • Linkem, Charles W.; Jimmy A. McGuire, Christopher J. Hayden, Mohammed Iqbal Setiadi, David P. Bickford, and Rafe M. Brown 2008. A New Species of Bent-Toe Gecko (Gekkonidae: Cyrtodactylus) from Sulawesi Island, Eastern Indonesia. Herpetologica 64 (2): 224-234 - 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
  • Rösler, H. 2000. Kommentierte Liste der rezent, subrezent und fossil bekannten Geckotaxa (Reptilia: Gekkonomorpha). Gekkota 2: 28-153
  • Rösler, H. & Glaw, F. 2008. A new species of Cyrtodactylus Gray, 1827 (Squamata: Gekkonidae) from Malaysia including a literature survey of mensural and meristic data in the genus. Zootaxa 1729: 8–22 - get paper here
  • Rösler, H. & S. J. Richards & R. Günther 2007. Bemerkungen zur Morphologie und Taxonomie der östlich der Wallacea vorkommenden Geckos der Gattung Cyrtodactylus GRAY, 1827, mit Beschreibungen von zwei neuen Arten (Reptilia: Sauria: Gekkonidae). Salamandra 43 (4): 193-230 - get paper here
  • Rösler, H., Glaw, F.& R. Günther 2005. Aktualisierte Liste der Geckos von Neuguinea (Sauria: Geckonidae: Gekkoninae) mit vorläufiger Charakterisierung von neun Formen aus den Gattungen Cyrtodactylus Gray, 1827, Gehyra Gray, 1834 und Nactus Kluge, 1983. Gekkota 5: 33-64 - get paper here
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