E. florulentus and E. pelviculus with the earliest name; Peters' E. rugosus described in Germany in 1873, as Günther had first partially suggested over a century earlier. Not everyone accepted these changes however, Crawford and Smith moved E. florulentus to Craugastor florulentus in 2005, and Frost et al. recognised C. florulentus in 2006. In 2014 Frost accepted Savage and Myers' 2002 synonymy. Interspecific taxonomy It was formerly classified in the family Leptodactylidae but as of 2014 is placed in the family Craugastoridae. In 1989 Stephen Blair Hedges classified Eleutherodactylus florulentus, as specimens of this species were known at the time, in the subgenus Craugastor. In 2008 Hedges, Duellman and Heinicke also classified C. rugosus in the subgenus Craugastor. Savage includes this species in his Eleutherodactylus fitzingeri series, E. biporcatus group in 2002. Hedges, Duellman and Heinicke place it in their Craugastor gulosus series in 2008. Padial, Grant and Frost classify it under their C. punctariolus series in 2014. Description These are relatively big rain frogs with a large head (females to in snout–vent length, males to ). The eyes have a black iris and the upper eyelid is covered in warts and bumps. There are crests just behind the eyes. The dorsum (back) is covered in warts and the creature appears much like a toad. There are hourglass-shaped ridges on the upper back, these are lined in lighter coloured stripes. There is no webbing between the digits of the limbs. The dorsum is dark brown, dark grey, or black in colour. The ventral surface of the animal is mottled brown with white and red. The ventral surfaces of the thighs may be either yellowish or orange. The inner thighs are ornamented with alternating bars of black and bright scarlet red; the black bars continue to the dorsal surface of the thighs. The groin has bright white and black marks. The juveniles are coloured differently than the adults: the dorsal warts are tipped in white at first but darken with age, the inner thighs are barred with white and black, and the ventral surfaces of the legs and groin are orange-red. According to Noble, it has a noticeably thicker and more robust stomach wall than other species of Eleutherodactylus (now split into Craugastor and other genera), but he was dissecting a mix of different species, mostly C. megacephalus, in order to describe C. rugosus. This frog is thought likely to not