Hyperolius chlorosteus (Boulenger 1915)

A large Hyperolius (33–37 mm) from the forest in western West Africa. Dorsum green or olive brown with a broad light canthal stripe, or a light triangle on the snout and broad light dorsolateral stripes of varying length, sometimes terminating just behind the eye but sometimes continuing to the groin. The dorsolateral stripe is not connected to the frontal triangle or canthal stripe. Ventrum bluish green. No light spot on heel. Gular sac of males yellow, limbs and toes green. There is very little difference in size between the sexes and there does not seem to be a juvenile and female phase. Pupil horizontal.The tadpole has the usual dentition for the genus and has long labial papillae. The tail is long and the eyes are rather large.This account was taken from "Treefrogs of Africa" by Arne Schiøtz with kind permission from Edition Chimaira (http://www.chimaira.de/) publishers, Frankfurt am Main.

Found widely scattered in the dense forest but quite difficult to track, therefore rare in collections although heard whenever suitable localities were visited. Western West Africa from Sierra Leone to central Côte d’Ivoire.

The males call singly and far from each other from branches in the dense forest, often from high up and rarely below 2–3 metres. The voice is a loud, hard, rather low-pitched click, uttered singly or in series with long intervals.

Hyperolius chlorosteus is a species of frog in the family Hyperoliidae. It is found in Ivory Coast, Guinea, Liberia, and Sierra Leone. Its natural habitats are subtropical or tropical moist lowland forests and rivers. It is threatened by habitat loss, but remains a Least-concern species.