Aplastodiscus sibilatus

Aplastodiscus sibilatus is a species of frog in the family Hylidae. It is endemic to northeastern Brazil and is known from central-eastern Bahia and Alagoas. The specific name "sibilatus" is derived from the Latin "sibilus" meaning "whistle", in allusion to the characteristic call of the species.
Description.
Adult males measure in snout–vent length. The overall appearance is slender. The head is slightly longer than it is wide. The snout is obtuse in lateral view and slightly tapering in dorsal view. The tympanum is distinct, but its upper edge is covered by the well-developed supratympanic fold. The fingers and the toes bear adhesive discs at their tips and have well-developed webbing. Dorsal surfaces are green with numerous black dots and few white dots posteriorly, without forming a clear pattern. The gular region and chest are bluish-green. The belly is white.
Habitat and conservation.
"Aplastodiscus sibilatus" occurs in coastal Restinga forest and in little-disturbed primary Atlantic forest at elevations of about above sea level. Males call from bromeliads. Breeding takes place in the slow backwaters of fast-flowing streams. This species is probably threatened by habitat loss caused by agricultural development, logging, and infrastructure development. It is not known to occur in protected areas.