Christinus alexanderi
Christinus alexanderi, also known as Alexander's southern gecko or Alexander's marbled gecko, is a small gecko in the family Gekkonidae. It is listed as Least Concern by the IUCN. This gecko is endemic to the Nullarbor Plain in Australia, where it lives in various habitats such as coastal limestone and mallee woodlands and often hides under rocks.
It is one of three species in the genus Christinus. It was first described by Glen Storr in 1987 as Phyllodactylus marmoratus alexanderi and later placed in Christinus; the holotype was collected at Eucla.
Its appearance is similar to Christinus marmoratus, but it can be distinguished by the scales around its nostrils and chin. Its marbled pattern also resembles Gehyra variegata, the variegated dtella, though it differs in other features such as digit claws.
Males are active from January to May, while females lay eggs in September to October and may store sperm through the winter.
The species is endemic to the Nullarbor Plain and occurs in many of its habitats, including coastal limestone and mallee woodlands.
This page was last edited on 2 February 2026, at 02:42 (CET).