Comprehensive DescriptionRead full entry
The only member of the genus Phyllomedusa to be completely terrestrial and overall dark brown in coloration. The genus Phyllomedusa is collectively known as the Leaf-frogs/monkey tree frogs due to their cataleptic movements as they move across trees. Duellman et al. (1988) express their surprise at finding a member of this genus to be terrestrial. A small species in which the male measures 37.4 mm and the female 44.6 SVL. This species differs from its congeners by the following characters: 1) dorsum brown with scattered metallic green flecks, 2) tympanum large (65-82% of eye diameter), 3) limbs short (tibia length 36-40% of SVL), 4) subarticular tubercles large, prominent, 5) phalanges and metatarsals (especially 4th toe) short and robust, 6) frontoparietals fused medially (no frontoparietal fontanelle visible dorsally), 7) palatines absent. Head tends to be large, slightly wider than body and lsightly longer than wide; 37.9-42.8% of SVL. Pupils elliptical. Order of fingers from shortest to longest 2-1-4-3. Nuptial excrescences weakly developed in breeding males. Limbs relatively short, tibia length is 36.8-40.5% SVL. Skin smooth dorsally; ventral skin surfaces granular. Purplish-brown dorsal coloration both day and night with green metallic flecks scattered. Lacks characteristic flash coloration in inguinal region. Iris pale creamy bonze with minute black flecks, eye-shine red-orangeVocal slits in males extend from the posterolateral base of the tongue to corner of mouth, vocal sac single, medial, and subgular. Well developed parotoid glands are present in this species, although they are not visible externally. Sacrum and coccyx are fused and vomerine teeth are absent (variable characters within Phyllomedusine frogs).
Tadpoles were collected at Orton Stage 27 (at 8 days): body length 7.5-9.0 mm, total length 22.5-25.5 mm. Spiracular tube short, flaplike, ventral, sinistral to midline opening at the center of the body. Snout is pale lime green and rest of body black wieth silvery blue belly and an elongate orange blotch on dorsal part of anterior half of dorsal fin.