[2] Up to 80 mm (3.1 in) in total length (including tail), the gibber gecko is a pale, creamy-fawn to reddish-brown or dark brown colour above, with scattered darker flecks and spots and some tiny pale dots, and usually with a distinct series of four or five conspicuous, irregular, W-shaped dark brown transverse bars or blotches between nape and hindlimbs.

The gibber gecko's tail is cylindrical and tapering, with rings of scales that are convex above and flat and subquadrangular beneath.

[3] The gibber gecko is insectivorous, with its natural diet comprising small spiders, ants, cockroaches, crickets, termites, and moths.

[6] The family Gekkonidae comprises 111 species in Australia which are normally no larger than 150 mm (5.9 in) in snout-to-vent length (SVL) with five digits that bear circular toe pads.

[8] The gibber gecko was originally described by Arthur Henry Shakespeare Lucas and Charles Frost in 1896 as Diplodactylus byrnei in the subfamily Diplodactylinae and further in the genus Diplodactylus which can be identified by the lack of caudal glands, the presence of small, retractable claws, and digits that lie flat on the ground.