Madagascar Frog

M 31 mm. Tibiotarsal articulation reaches the nostril. No webbing between fingers, a trace of webbing between toes. Large protruding inner metatarsal tubercle. Dorsal skin very finely granular. Dorsally light brown to olive green, with two indistinct large brown transversal bands. Iris copper. Males with a subgular laterally yellow-black coloured vocal sac (Glaw and Vences 2007).Taken with permission from Glaw and Vences (2007) and Stuart et al. (2008).

Forest near Andranofotsy and on the island of Nosy Mangabe (Glaw and Vences 2007). It may possibly occur more widely on the Masoala Peninsula (Stuart et al. 2008). It occurs between sea level and 400 m asl, in pristine rainforest (Stuart et al. 2008).

Habits: Calling males have been heard from large deep cavities between boulders close to a tiny rainforest stream. Calls were heard during the day. Specimens were found active close to these cavities at night (Glaw and Vences 2007). Calls: A distinct rattling note, repeated after regular intervals (Glaw and Vences 2007).

Endangered and rarely seen. It requires pristine rainforest. It is found in at least one protected area, the Réserve Spéciale de Nosy Mangabe. It may occur also in the Parc National de Masoala, but has not yet been confirmed present there. The main threat is habitat loss, due to subsistence agriculture and grazing, logging, charcoal manufacture, invasion and spread of eucalyptus, and expanding human settlement (Stuart et al. 2008).

Gephyromantis silvanus, commonly known as the Madagascar frog, is a species of frogs in the family Mantellidae. It is endemic to Madagascar. Its natural habitats are subtropical or tropical moist lowland forest and rivers. It is threatened by habitat loss.