Английская Википедия:Chytra kirki

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Chytra kirki is a species of tropical freshwater snail with an operculum, aquatic gastropod mollusk in the family Paludomidae.[1]

Chytra kirki is the only species in the genus Chytra.[2]

The specific name kirki is in honor of explorer John Kirk (1832-1922), who has donated various other specimen of snails (not this species) to the Natural History Museum.[3]

Distribution

This species is found in Burundi, the Democratic Republic of the Congo, Tanzania, and Zambia.[1] The type locality is Lake Tanganyika.[4]

Description

The shell is solid, trochiform and dirty whitish in color.[3] The spire is acutely conical.[3] The shell has 6 or 7 feebly concave whorls.[3] They are bearing arcuate and flexuous lines of growth and six or seven granulous lirae, whereof that immediately above the suture is the largest.[3] The body whorl is acutely angular at the periphery, encircled by two subequal granular ridges.[3] The base is concave near the circumference, then slightly convex, concentrically granosely ridged.[3] The ridges nearest the umbilicus are coarser than the others, and also arcuately radiately striated.[3] The shell has deep and narrow umbilicus.[3]

The aperture is irregularly subcircular and whitish.[3] The outer lip (viewed laterally) is obliquely incurved.[3] Basal and columellar margins are forming one strongly arcuate line joined above to the extremity of the labrum by a thickish callosity.[3]

The width of the shell is 19 mm.[2] The height of the shell is 15 mm.[2]

Файл:Chytra kirki shell.png
Black and white drawing of lateral view of the shell.
Файл:Chytra kirki shell 2.png
Black and white drawing of umbilical view of the shell.

Ecology

Its natural habitat is freshwater lakes.[1] It is widespread[2] species in the Lake Tanganyika, but its distribution is patchy and with low numbers of snails.[1] It lives on the mud with much organic material in depths 10–20 meters.[1][2] There is possibility that it can live in depths up to 80 m.[1][2]

References

This article incorporates public domain text from the reference[3] Шаблон:Reflist

Шаблон:Taxonbar

  1. 1,0 1,1 1,2 1,3 1,4 1,5 Ошибка цитирования Неверный тег <ref>; для сносок iucn status 16 November 2021 не указан текст
  2. 2,0 2,1 2,2 2,3 2,4 2,5 Brown D. S. (1994). Freshwater Snails of Africa and their Medical Importance. Taylor & Francis. Шаблон:ISBN.
  3. 3,00 3,01 3,02 3,03 3,04 3,05 3,06 3,07 3,08 3,09 3,10 3,11 3,12 Smith E. A. (1881). "On a collection of shells from lakes Tanganyika and Nyassa and other localities in East Africa". Proceedings of the Zoological Society of London 1881: 276-300. Plate 33, figure 18-18b.
  4. Ошибка цитирования Неверный тег <ref>; для сносок Smith 1880 не указан текст