Arthroleptis bivittatus is a species of frog in the family Arthroleptidae. It is endemic to Guinea and only known from the holotype collected from the Tombo Island. It is uncertain whether this species is distinct from the common Arthroleptis poecilonotus. Common name Tumbo-Insel screeching frog has been coined for this species. Description The holotype, an adult female, measures in snout–vent length. The overall appearance is stocky. The tympanum is small (diameter 1.5 mm). Inter-digital webbing is absent. The long-preserved specimen is brown in colour. There are traces of a darker mid-dorsal pattern that could be similar to the hourglass pattern in Arthroleptis poecilonotus. Diffuse, lighter dorsolateral bands are visible. Habitat and conservation Not much is known about this species that has not been observed after it was described more than 100 years ago. It is assumed to inhabit lowland forest. Threats to it are unknown. References bivittatus Frogs of Africa Amphibians of West Africa Endemic fauna of Guinea Amphibians described in 1885 Taxa named by Fritz Müller (doctor) Taxonomy articles created by Polbot