Northern velvet geckoThe northern velvet gecko is a species of lizard in the family Diplodactylidae. The species is endemic to Queensland in Australia.EtymologyThe specific name, castelnaui, is in honor of French naturalist Francis de Laporte de Castelnau.Geographic rangeO. castelnaui is found on the Cape York Peninsula, Queensland, Australia.HabitatThe preferred natural habitats of O. castelnaui are forest and savanna.ReproductionO. castelnaui is oviparous. Clutch size is two eggs, which have a parchment-like shell, and hatch in 60 days.