The representative tadpole of Calluella guttulata (32.6 mm total length, 25.3 mm tail length, 5.3 mm body
length, tail length/body length 1.3, stage 34; Fig. 2D) is morphologically similar to the tadpole of Glyphoglossus.
Although these specimens had become quite cleared when thoroughly examined, soon after they were preserved
they had a uniformly pale body and the edges of the fins were intensely black. Both of these tadpoles lack nares
like those of most aquatic microhylids, and the pleats in the skin of the buccopharyngeal area that presumably
allow for easy expansion of the buccopharynx during feeding pumps are apparent.