Comprehensive DescriptionRead full entry
Hypsiboas geographicus has a maximum length of 55 mm for males and 75 mm for females (Bartlett and Bartlett 2003). It varies greatly in color and patterning and may possibly be a species complex (Stuart et al. 2008) Skin is smooth (Duellman 1973). Fingers are one-half webbed and toes are three-quarters webbed (Bartlett and Bartlett 2003). A triangular calcar (heel spur) is a distinguishing characteristic (Duellman 1973). Breeding males have nuptial pads (Bartlett and Bartlett 2003) and a single median subgular vocal sac (Duellman 1973).
The presence of webbing on the hand and the reticulated palpebrum distinguish this species from H. calcarata and H. fasciata (Duellman 1973).
This species undergoes ontogenetic change in coloration. Tadpoles are all black while recently metamorphosized frogs are creamy tan with black flecks on the dorsal surfaces. Young froglets also have grayish venters and black flanks, anterior and posterior thighs, and inner shank surfaces. With growth, adult pigmentation replaces juvenile coloration and the dorsal black spots, frequently including an X-shaped scapular marking. The black markings on the flanks and thighs concentrate to create patterning or bars in adults, though young breeding males sometimes still retain black thighs and flanks. Sides are a clean gray. The venter is white or orange in adult frogs, and may be creamy or have black spots, the latter particularly in larger females. Webbing is brown except in individuals from Bolivia and southern Peru, which have red webbing. The iris is reddish brown and the palpebrum (eyelid) has striking reticulations (Bartlette and Bartlett 2003; Duellman 1973). Individuals from the same locality may be boldly or lightly marked. There is also variation in coloration based on locality. Specimens from Bolivia and southern Peru have black ventral spotting on the throat and belly and red webbing. Trinidad specimens have some ventral spotting but have brown webbing (Duellman 1973).
Synonymous with Hyla geographica (Azevedo-Ramos et al. 2010)