''Schistometopum gregorii'', also known as Witu caecilian, mud-dwelling caecilian, and flood-plain-dwelling caecilian, is a species of

amphibian Amphibians are tetrapod, four-limbed and ectothermic vertebrates of the Class (biology), class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terres ...

in the family

Dermophiidae The Dermophiidae are a family of common caecilians. They are found in Central and South America, and Africa. Like other caecilians, they superficially resemble worms or snakes. They are the only viviparous caecilians (species that give birth ...

from

East Africa East Africa, Eastern Africa, or East of Africa, is the eastern subregion of the African continent. In the United Nations Statistics Division scheme of geographic regions, 10-11-(16*) territories make up Eastern Africa: Due to the historical ...

Distribution

''Schistometopum gregorii'' 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 ...

to the coastal

Kenya ) , national_anthem = "Ee Mungu Nguvu Yetu"() , image_map = , map_caption = , image_map2 = , capital = Nairobi , coordinates = , largest_city = Nairobi , ...

and

Tanzania Tanzania (; ), officially the United Republic of Tanzania ( sw, Jamhuri ya Muungano wa Tanzania), is a country in East Africa within the African Great Lakes region. It borders Uganda to the north; Kenya to the northeast; Comoro Islands and ...

; it is known from the Tana River Delta area in Kenya (its type locality) and between

Bagamoyo Bagamoyo, is a historic coastal town founded at the end of the 18th century, though it is an extension of a much older (8th century) Swahili settlement, Kaole. It was chosen as the capital of German East Africa by the German colonial administra ...

and

Rufiji River The Rufiji River lies entirely within Tanzania. It is also the largest and longest river in the country. The river is formed by the confluence of the Kilombero and Luwegu rivers. It is approximately long, with its source in southwestern Tanzania ...

in Tanzania. It is possible that the Kenyan and Tanzanian populations are distinct species.

Etymology

The

specific name Specific name may refer to: * in Database management systems, a system-assigned name that is unique within a particular database In taxonomy, either of these two meanings, each with its own set of rules: * Specific name (botany), the two-part (bino ...

''gregorii'' honours

John Walter Gregory John Walter Gregory, , (27 January 1864 – 2 June 1932) was a British geologist and explorer, known principally for his work on glacial geology and on the geography and geology of Australia and East Africa. The Gregory Rift in the Great Rift ...

, a British geologist and explorer and the collector of 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 ...

Description

''Schistometopum gregorii'' is glossy black dorsolaterally and somewhat lighter ventrally. There are 110–119 primary annuli (ring-shaped folds). Kenyan males measure (mean 247 mm) and females (mean 260 mm) in total length.

Habitat and conservation

The species has been found from black mud near rivers and agricultural areas (e.g., rice paddies). There are no known major threats affecting this ecologically poorly known species. Because it occurs in cultivated areas it is likely able to tolerate disturbance.

References

{{Taxonbar, from=Q1942195 gregorii Taxa named by George Albert Boulenger Amphibians described in 1895 Amphibians of Kenya Amphibians of Tanzania Taxonomy articles created by Polbot