Gehyra variegata

Gehyra variegata, the tree dtella, variegated dtella or varied dtella, is a species of gecko in the genus Gehyra, native to inland Australia. The family Gekkonidae to which G. variegata belongs to are of Gondwanan origin. When the land mass of Australia split from Gondwana, it contained early agamids and diplodactlyds, the latter encompassing geckoes. During the evolutionary history of lizards the family Gekkonidae and Gekkoninae subfamily developed in the Scleroglossa group, which use their jaws rather than tongues when eating. The Scleroglossan group includes the clade Gekkota consisting of three families, including Gekkonidae. The tree dtella's body (snout-vent) reaches a length of 55mm and a tail length of 70mm. The tree dtella has a highly variable dorsal colour which can likely be attributed to there being more than one species under the current name. Colours range from population to population from grey to brown with chequered dark and pale blotches and marbling in the eastern populations with western populations being marked with white to pale brown spots with dark bars. These patterns form an irregular reticulate pattern over the entire dorsal surface. The scales on the body of the tree dtella are small and uniform, with the inter-orbital scales on its head are much smaller than the loreal scales. The rostral scale on its nose has steeply sloping upper edges. There are several dark lines on the sides of the head of the tree dtella, with a whitish underside of the body. It has a long tail which tapers to a point and is generally 55% of the snout-vent length. The fingers and toes of the tree dtella are clawed with large pads at the tips, enabling it to climb. All inner digits are claw-free, a trait of the genus Gehyra. The fingers and toes have divided subdigital lamellae and the third and fourth toes do not feature webbing. The tree dtella lives in arid to sub-humid areas, including woodland, shrubland and rocky environments where dry conditions are common. It is both arboreal and saxicolous, found under loose bark and hollows on trees, and in crevices and under exfoliating rock. In trees, the tree dtella prefers sheltered sites greater than 1 metre from the ground and can also be found under ground debri. Inland Australia, except in the north-west and south-east. Field studies have shown that the tree dtella exhibits metapopulation structure within its geographical region.