Angustassiminea castanea

Angustassiminea castanea
Shell of Angustassiminea castanea (specimens at the Natural History Museum, Rotterdam)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Littorinimorpha
Family:	Assimineidae
Genus:	Angustassiminea
Species:	A. castanea
Binomial name
Angustassiminea castanea (Westerlund, 1883)
Synonyms [1]
List Assiminea castaneaWesterlund, 1883 (original combination) Assiminea castanea kushimotoensisKuroda, 1958 (basionym) Assiminea kushimotoensisKuroda, 1958

Angustassiminea castanea is a species of small operculate snail, a terrestrial gastropod mollusk or micromollusk in the family Assimineidae. ^[1]

Description

The length of the shell attains 5 mm, its diameter 2.5 mm.

(Original description in Latin) The solid shell is imperforate, pyramidally conical and chestnut-colored. It is very shiny, finely striate and spirally lined. The spire is acute. The shell has seven rather convex whorls, which are disjoined by a thin suture. The body whorl is faintly angled, convex at the base, and it nearly occupies half the length of the shell. The aperture ispear-shaped and acute above, with a straight parietal wall. The peristome (margin) is straight, with a arched basal margin. The inner lip is slightly thickened and reflected above. ^[2]

Distribution

This marine species has been found off Japan.

References

1. Angustassiminea castanea(Westerlund, 1883) . 4 December 2025. Retrieved through: World Register of Marine Species .
2. Westerlund, C.A. (1883). "Von der Vega-Expedition in Asien gesammelte Binnenmollusken". Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft. 15 (3/4): 56. Retrieved 4 December 2025. This article incorporates text from this source, which is in the public domain .

• Kuroda, T. (1958). On the more species of Assiminea from Japan (A feshwater gastropodous genus). Venus. 20(1): 16-22.
• Fukuda H. & Hasegawa K. (2017). Family Assimineidae. Pp. 813-816, in: T. Okutani (ed.), Marine Mollusks in Japan, ed. 2. 2 vols. Tokai University Press. 1375 pp.