Sphaenorhynchus Tschudi, 1838

Sphaenorhynchus Tschudi, 1838:71 . Type species: Hyla lactea Daudin, 1802, by original designation.

Definition. Small to medium-sized green treefrogs with rounded discs on the fingers and toes, both of which are extensively webbed.

Content. Fourteen species: Sphaenorhynchus botocudo* Caramaschi, Albeida & Gasparini, bromelicola* Bokemann, caramaschii* Toledo, Garcia, Lingnau & Haddad, carneus* (Cope), dorisae (Goin), lacteus (Daudin), mirim* Caramaschi, Albeida & Gasparini, orophilus (Lutz & Lutz), palustris* Bokermann, pauloalvini* Bokermann, planicola* (Lutz & Lutz), platycephalus * (Werner), prasinus * Bokermann, and surdus* (Cochran).

Distribution. South America east of the Andes southward to Bolivia and southeastern Brazil; Trinidad.

Etymology. The generic name is derived from the Greek sphenos meaning wedge and the Greek rhynchos meaning snout. The name applies to the flattened snouts of members of this genus.

Remarks. Molecular data are available only for the three Amazonian species that are supported at 100% for their monophyly, but data are missing for the 11 species in eastern Brazil.