Avenionia brevis is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Hydrobiidae.
Description The length of the shell attains 2 mm, its diameter 0.75 mm.
(Original description in French) The shell is very small, short, oval, and somewhat cylindrical, with a whitish, transparent coloration. The spire is composed of three whorls, the first of which is very small, while the second is proportionally very large, increasing almost suddenly in size. The suture is deep, and the aperture is oval. No umbilicus is visible, and the umbilical chink is barely perceptible.
Distribution This species is found in eastern France. It is known from freshwater springs, and is suspected to also live in subterranean habitats. The species is protected by law in France.
Synonyms Avenionia brevis berenguieri (Bourguignat, 1882): synonym of Avenionia berenguieri (Bourguignat, 1882) (unaccepted rank) Avenionia brevis bourguignati (Locard, 1883): synonym of Avenionia bourguignati (Locard, 1883) (unaccepted rank) Avenionia brevis brevis (Draparnaud, 1805): synonym of Avenionia brevis (Draparnaud, 1805) (a junior synonym) Avenionia brevis roberti Boeters, 1967: synonym of Avenionia roberti Boeters, 1967 (unaccepted rank)
References
Boeters, H. D. (1969). Avenionia brevis in Deutschland. Mitteilungen der Deutschen Malakozoologischen Gesellschaft. 2: 136-138. Frankfurt am Main Glöer P. (2022). The freshwater gastropods of the West Palaearctis. Identification key, Anatomy, Ecology, Distribution. III. Hydrobiidae. Hetlingen: The author. 528 pp.
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