The jewelled gecko, Naultinus gemmeus, is a species of gecko endemic to the South Island of New Zealand. There are two main subgroups of jewelled geckos: those living in Otago and those living in Canterbury. There is also a small Southland population. One obvious difference is that some of the males of the Canterbury geckos are grey or brown with yellow, purple and white markings; whereas all Otago geckos are green with yellow and white markings....