Once thought to be endemic to the territory, the species has also been found in the coastal parts of Guangdong Province.

However, some disagree with such a classification based on the disjunctive distribution of the two, and the differences in their physical appearance and habitat preference.

Its body colour ranges from light to dark brown, with patches of orange markings scattered on the ventral side.

When threatened, it releases a toxic secretion and may also feign death, rolling onto its back and exposing its brightly coloured belly.

In the breeding season, the male displays by beating its tail, which develops a white or bluish stripe which is visible in dim light.