Pachydactylus is a genus of insectivorous geckos, lizards in the family Gekkonidae. The genus is endemic to Africa, and member species are commonly known as thick-toed geckos. The genus also displays rich speciation, having 58 distinct species identified when compared to other closely related gecko genera like Rhoptropus, most of which have emerged since 35Ma. It has been suggested that the reason for this rich speciation not from adaptive radiation nor nonadaptive radiation, but that the genus represents a clade somewhere between the two drivers of speciation. P. bibronii geckos have been used by NASA as animal models for experimentation.

Description
The genus Pachydactylus is characterized by dilated toe tips, usually with undivided scansors. Body scales are small, granular and non-overlapping, with scattered, large keeled tubercles.

Coloration of Pachydactylus species varies, but is generally drab in color.

Presence of adhesive toe pads varies by species and habitat, with rock dwelling species of Pachydactylus retaining adhesive pads, but unambiguous independent loss of toe pads in sand dwelling and burrowing species like P. rangei.

Body size in Pachydactylus varies across the 58 species, ranging from 35 to 115mm Snout-Vent Length (SVL) with the ancestral condition of a larger body size with adhesive toe pads to suit a generalist habitat.

Behavior
All observed species of Pachydactylus are strictly nocturnal.

Habitat
Pachydactylus species live in a diverse range of habitats across Southern Africa. Habitat varies by species, with some species preferring generalist habitats, human dwellings, rock-dwellings, and sand dwellings. Habitat preference typically varies by body size and retention of toe pads, which varies across the genus. The body size of Pachydactylus geckos has been shown to correlate with their habitat range.

Diet
Lizards of the genus Pachydactylus feed mainly on arthropods, but have been observed eating small vertebrates.

Geographic range
The geographic range of the genus Pachydactylus is centered on Southern Africa, with some species reaching East Africa, the northernmost limit of their distribution. In South Africa's rugged Richtersveld region, Pachydactylus geckos comprised 13 of 18 all gecko species surveyed.

Species
There are 58 species that are recognized as being valid:
Pachydactylus acuminatus 
Pachydactylus affinis  – Transvaal thick-toed gecko
Pachydactylus amoenus 
Pachydactylus angolensis  - Angola large-scaled gecko, Angolan thick-toed gecko
Pachydactylus atorquatus 
Pachydactylus austeni  – Austen's thick-toed gecko 
Pachydactylus barnardi  – Barnard's thick-toed gecko  
Pachydactylus bicolor  – velvety thick-toed gecko 
Pachydactylus boehmei 
Pachydactylus capensis  – Cape thick-toed gecko 
Pachydactylus caraculicus  – Angola banded thick-toed gecko
Pachydactylus carinatus 
Pachydactylus etultra  
Pachydactylus fasciatus  – banded thick-toed gecko
Pachydactylus formosus  – Smith's thick-toed gecko 
Pachydactylus gaiasensis  – Brandberg thick-toed gecko 
Pachydactylus geitje  – ocellated thick-toed gecko
Pachydactylus griffini 
Pachydactylus haackei  – Haacke's thick-toed gecko
Pachydactylus katanganus  
Pachydactylus kladaroderma  – thin-skinned thick-toed gecko 
Pachydactylus kobosensis 
Pachydactylus kochii 
Pachydactylus labialis  – Calvinia thick-toed gecko  
Pachydactylus latirostris  – quartz gecko 
Pachydactylus macrolepis  – large-scaled banded gecko
Pachydactylus maculatus  – spotted thick-toed gecko
Pachydactylus maiatoi  – Maiato's thick-toed gecko
Pachydactylus maraisi 
Pachydactylus mariquensis  – Marico thick-toed gecko
Pachydactylus mclachlani 
Pachydactylus monicae 
Pachydactylus montanus 
Pachydactylus namaquensis  – Namaqua thick-toed gecko 
Pachydactylus oculatus  – golden spotted thick-toed gecko 
Pachydactylus oreophilus  – Kaokoveld thick-toed gecko 
Pachydactylus oshaughnessyi  
Pachydactylus otaviensis  
Pachydactylus parascutatus  
Pachydactylus punctatus  – speckled thick-toed gecko
Pachydactylus purcelli 
Pachydactylus rangei  – Namib sand gecko
Pachydactylus reconditus 
Pachydactylus robertsi 
Pachydactylus rugosus  – rough thick-toed gecko 
Pachydactylus sansteynae  – San Steyn's thick-toed gecko 
Pachydactylus scherzi  – Sherz's thick-toed gecko 
Pachydactylus scutatus  – large-scaled thick-toed gecko 
Pachydactylus serval  – western spotted thick-toed gecko 
Pachydactylus tigrinus  – tiger thick-toed gecko 
Pachydactylus tsodiloensis  – Tsodilo thick-toed gecko 
Pachydactylus vansoni  – Van Son's thick-toed gecko
Pachydactylus vanzyli 
Pachydactylus visseri 
Pachydactylus wahlbergii 
Pachydactylus waterbergensis  
Pachydactylus weberi  – Weber's thick-toed gecko
Pachydactylus werneri 

Nota bene: A binomial authority in parentheses indicates that the species was originally described in a genus other than Pachydactylus.

References

Further reading

External links 

 
Geckos of Africa
Lizard genera
Taxa named by Arend Friedrich August Wiegmann
도톰가락도마뱀붙이속(Pachydactylus)은 도마뱀붙이과의 일속이며 아프리카에 고유하다. 흔히 틱토 게코(thick-toed geckos)라고 불린다.

도톰가락도마뱀붙이속은 넓적한 발가락 끝이 특징이며, 보통 박판은 나뉘어있지 않다. 몸비늘은 작고 오톨도톨하며 서로 겹치지 않고, 중간중간 크고 용골진(keeled) 결절이 흩어져있다.

대부분의 종들이 야행성이며 주로 절지동물을 섭취하고 다양한 종류의 서식지에서 살아간다.

지리학적 분포는 남아프리카를 중심으로 하며 몇몇 종은 동아프리카에까지 서식하는데, 이는 분포의 최북단이 된다.

하위 
다음과 같은 57 종이 유효하다고 인정받는다:

 Pachydactylus acuminatus 
 Pachydactylus affinis  – Transvaal thick-toed gecko
 Pachydactylus amoenus 
 Pachydactylus angolensis  - Angola large-scaled gecko, Angolan thick-toed gecko
 Pachydactylus atorquatus 
 Pachydactylus austeni  – Austen's thick-toed gecko
 Pachydactylus barnardi  – Barnard's thick-toed gecko
 Pachydactylus bicolor  – velvety thick-toed gecko
 Pachydactylus boehmei 
 Pachydactylus capensis  – Cape thick-toed gecko
 Pachydactylus caraculicus  – Angolan banded thick-toed gecko
 Pachydactylus carinatus 
 Pachydactylus etultra 
 Pachydactylus fasciatus  – banded thick-toed gecko
 Pachydactylus formosus  – Smith's thick-toed gecko
 Pachydactylus gaiasensis  – Brandberg thick-toed gecko
 Pachydactylus geitje  – ocellated thick-toed gecko
 Pachydactylus griffini 
 Pachydactylus haackei  – Haacke's thick-toed gecko
 Pachydactylus katanganus 
 Pachydactylus kladaroderma  – thin-skinned thick-toed gecko
 Pachydactylus kobosensis 
 Pachydactylus kochii 
 Pachydactylus labialis  – Calvinia thick-toed gecko
 Pachydactylus latirostris  – quartz gecko
 Pachydactylus macrolepis  – large-scaled banded gecko
 Pachydactylus maculatus  – spotted thick-toed gecko
 Pachydactylus maraisi 
 Pachydactylus mariquensis  – Marico thick-toed gecko
 Pachydactylus mclachlani 
 Pachydactylus monicae 
 Pachydactylus montanus 
 Pachydactylus namaquensis  – Namaqua thick-toed gecko
 Pachydactylus oculatus  – golden spotted thick-toed gecko
 Pachydactylus oreophilus  – Kaokoveld thick-toed gecko
 Pachydactylus oshaughnessyi 
 Pachydactylus otaviensis 
 Pachydactylus parascutatus 
 Pachydactylus punctatus  – speckled thick-toed gecko
 Pachydactylus purcelli 
 Pachydactylus rangei  – Namib sand gecko
 Pachydactylus reconditus 
 Pachydactylus robertsi 
 Pachydactylus rugosus  – rough thick-toed gecko
 Pachydactylus sansteynae  – San Steyn's thick-toed gecko
 Pachydactylus scherzi  – Sherz's thick-toed gecko
 Pachydactylus scutatus  – large-scaled thick-toed gecko
 Pachydactylus serval  – western spotted thick-toed gecko
 Pachydactylus tigrinus  – tiger thick-toed gecko
 Pachydactylus tsodiloensis  – Tsodilo thick-toed gecko
 Pachydactylus vansoni  – Van Son's thick-toed gecko
 Pachydactylus vanzyli 
 Pachydactylus visseri 
 Pachydactylus wahlbergii 
 Pachydactylus waterbergensis 
 Pachydactylus weberi  – Weber's thick-toed gecko
 Pachydactylus werneri 

주의사항: 삽입어구의 이명 명명자(:en:Binominal nomenclature)는 원래 해당 종을 도톰가락도마뱀붙이속(Pachydactylus)과는 다른 속에 속한 것으로 기술했을지도 모른다.

각주

참고 문헌 
 Bauer AM, Lamb T, Branch WR (2006). "A Revision of the Pachydactylus serval and P. weberi Groups (Reptilia: Gekkota: Gekkonidae) of Southern Africa, with the Description of Eight New Species". Proc. California Acad. Sci. 57 (23): 595-709.
 Boulenger GA (1885). Catalogue of the Lizards in the British Museum (Natural History). Second Edition. Volume I. Geckonidæ ... London: Trustees of the British Museum (Natural History). (Taylor and Francis, printers). xii + 436 pp. + Plates I-XXXi. (Genus Pachydactylus, p. 200).
 Branch, Bill (2004). Field Guide to Snakes and other Reptiles of Southern Africa. Third Revised edition, Second impression. Sanibel Island, Florida: Ralph Curtis Books. 399 pp. . (Genus Pachydactylus, pp. 249–250).
 Wiegmann AFA (1834). Herpetologia Mexicana, seu descriptio amphibiorum Novae Hispaniae, quae itineribus comitis Sack, Ferdinandi Deppe et Chr. Guil. Schiede in Museum Zoologicum Berolinense pervenerunt. Pars prima, saurorum species amplectens. Adiecto systematis saurorum prodromo, additisque multis in hunc amphibiorum ordinem observationibus. Berlin: C.G. Lüderitz. vi + 54 pp. + Plates I-X. (Pachydactylus, new genus, p. 19). (in Latin).

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