Sphaenorhynchus | |
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Sphaenorhynchus lacteus | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Amphibia |
Order: | Anura |
Family: | Hylidae |
Tribe: | Dendropsophini |
Genus: | Sphaenorhynchus Tschudi, 1838 |
Species | |
See text. | |
Synonyms[1] | |
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Sphaenorhynchus is a genus of frogs in the family Hylidae.[1][2] They are also known as lime treefrogs[1] or hatchet-faced treefrogs.[3] They are found in the Amazon and Orinoco River basins of South America, the Guianas, Trinidad, and southern and eastern Brazil.[1] The majority of the species are associated with the Atlantic Forest domain in Brazil.[4]
Sphaenorhynchus has been suggested to be the sister taxon of the clade Scarthyla + Scinax.[1] Faivovich and colleagues (2005) placed it in the tribe Dendropsophini, together with Dendropsophus, Lysapsus, Pseudis, Scarthyla, Scinax, and Xenohyla.[5]
Sphaenorhynchus are small to moderately sized frogs. They are bright green or yellowish green in life. The snout is pointed and projecting in lateral view. Most species have well-developed horizontal dermal flaps on each side of the anus. The fingers are weakly webbed while the toes are extensively webbed. Males have a vocal sac on the posterior throat region.[6]
The following species are recognised in the genus Sphaenorhynchus:[1][2]