Sphaenorhynchus

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
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]
Dryomelictes Fitzinger, 1843 Dryomelictes Cope, 1865 Hylopsis Werner, 1894 Sphoenohyla Lutz and Lutz, 1938

Systematics

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]

Description

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]

Species

The following species are recognised in the genus Sphaenorhynchus:^[1][2]

• Sphaenorhynchus botocudo (Caramaschi, Almeida, and Gasparini, 2009)
• Sphaenorhynchus bromelicola (Bokermann, 1966)
• Sphaenorhynchus cammaeus (Roberto, Araujo-Vieira, Carvalho-e-Silva, and Ávila, 2017)
• Sphaenorhynchus canga (Araujo-Vieira, Lacerda, Pezzuti, Leite, Assis, and Cruz, 2015)
• Sphaenorhynchus caramaschii (Toledo, Garcia, Lingnau, and Haddad, 2007)
• Sphaenorhynchus carneus (Cope, 1868)
• Sphaenorhynchus dorisae (Goin, 1957)
• Sphaenorhynchus lacteus (Daudin, 1800)
• Sphaenorhynchus mirim (Caramaschi, Almeida, and Gasparini, 2009)
• Sphaenorhynchus palustris (Bokermann, 1966)
• Sphaenorhynchus pauloalvini (Bokermann, 1973)
• Sphaenorhynchus planicola (Lutz and Lutz, 1938)
• Sphaenorhynchus platycephalus (Werner, 1894)
• Sphaenorhynchus prasinus (Bokermann, 1973)
• Sphaenorhynchus surdus (Cochran, 1953)