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| Boulenger's Snouted Treefrog, Scinax boulengeri (Cope, 1887). Photographed in northwestern Costa Rica. It ranges from the Caribbean lowlands of Central America (Nicaragua to Panama) and the Pacific lowlands of Costa Rica and eastern Panama southward into Colombia. S. boulengeri uses lowland dry and wet forests as well as forest edge and disturbed habitats. Adult females reach 53 mm, adult males are slightly smaller. |
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Sipurio Snouted Treefrog, Scinax elaeochrous (Cope, 1875). Photographed in northeastern Costa Rica. The Sipurio Snouted Treefrog ranges through the Caribbean lowlands from Nicaragua to western Panama. In the Pacific lowlands it occurs in the Golfo Dulce region of Costa Rica and Panama. Isolated population occur in the Pacific lowlands of Colombia. It inhabits lowland and premontane wet forests. This is an explosive breeder after the first heavy rains of the wet season. Males call from low vegetation near water. Females reach 32 mm, males reach 29 mm in body length. In elevation it occurs below 1200 m. |
| About 95 species of Scinax range from Guerreo and Tamaulipas, Mexico southward to Argentina and northern Peru. They also occur on Trinidad, Tobago, and St. Lucia. These are often drab little frogs that have the web between toes 1 and 2 completely absent, or reduced to a fringe. Also, the terminal finger disk is wider than it is long. Breeding usually occurs in temporary pools, but at least one lineage breeds in streams. Members of the genus often perch in head down positions on vertical surfaces. These frogs are sometimes called snouted treefrogs. Duellman and Weins (1992, Occasional Papers Museum of Natural History University Kansas, 151:1-23) presented evidence that Scinax belonged to a monophyletic group that including Sphaenorhynchus and Scarthyla. |