The venter usually is white; in P. ignicolor it is yellow.
"A Review of the Middle American Tree Frogs of the Genus Ptychohyla"
William E. Duellman
Nay, by the mass, then should I fall soon; Yet I keep not to climb so high; But to climb for a bird's nest, There is none between east and west, That dare thereto venter better than I: But to venter to heaven-what, and my feet slip?
"A Select Collection of Old English Plays, Volume I."
R. Dodsley
Felix venter quem intrabis!
"The Complete Poetical Works of Henry Wadsworth Longfellow"
Henry Wadsworth Longfellow