Greater spikethumb frog

Description

Plectrohyla avia,also known as the greater spikethumb frog,is a species of frog in the family Hylidae.It occurs in Guatemala and Mexico and is found on the Pacific slopes of the Sierra Madre between southeastern Chiapas (Mexico) and southwestern Guatemala.Plectrohyla avia is the largest member of the genus Plectrohyla,with males reaching about 90 mm (3.5 in) and females about 70 mm (2.8 in) snout–vent length.It was described by Laurence Cooper Stuart (fr) in 1952 based on a single specimen.This specimen—the holotype—is an adult male that measured 86 mm (3.4 in) SVL.The tympanum is small but very distinct.There is a heavy supratympanic fold that merges with the fold-like canthus (or in less technical terms,"lateral skin folds").The fingers have vestigial webbing whereas the toes are moderately webbed.The prepollex ("spikethumb") is simple and horny.Vocal slits are absent.The teeth of the upper maxilla are long and protruding.