The specific name, guentheri, is in honour of German-born British herpetologist Albert Günther.

[citation needed] U. guentheri reaches a total length (including tail) of 150 mm (5.9 in).

[citation needed] The preferred natural habitat of U. guentheri is forest, at altitudes of 30–120 m (98–394 ft).

[1] U. guentheri forages and roosts on small trees and bushes.

[1] It is very difficult to find during the day, using its camouflage to mimic dead branches and bits of bark.