''Arthroleptis bivittatus'' is a species of

frog A frog is any member of a diverse and largely Carnivore, carnivorous group of short-bodied, tailless amphibians composing the order (biology), order Anura (ανοὐρά, literally ''without tail'' in Ancient Greek). The oldest fossil "proto-f ...

in the family

Arthroleptidae The Arthroleptidae are a family of frogs found in sub-Saharan Africa. This group includes African treefrogs in the genus ''Leptopelis'' along with the terrestrial breeding squeakers '' Arthroleptis'', and several genera restricted to the Guinea ...

. It is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

Guinea Guinea ( ),, fuf, 𞤘𞤭𞤲𞤫, italic=no, Gine, wo, Gine, nqo, ߖߌ߬ߣߍ߫, bm, Gine officially the Republic of Guinea (french: République de Guinée), is a coastal country in West Africa. It borders the Atlantic Ocean to the we ...

and only known from the

holotype A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of several ...

collected from the

Tombo Island Tombo Island is an island in the Atlantic Ocean at the tip of the Guinean Kaloum Peninsula, approximately east of the Iles de Los, Loos Islands. The island is the site where the capital Conakry was built on. It is the site of the old city of Co ...

. It is uncertain whether this species is distinct from the common ''

Arthroleptis poecilonotus ''Arthroleptis poecilonotus'' (common names: West African screeching frog, mottled squeaker) is a species of frog in the family Arthroleptidae. This adaptable species has a wide range within the Sub-Saharan Africa and is not considered threaten ...

''. 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

{{Taxonbar, from=Q1941626 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