Alvania eucraspeda

Alvania eucraspeda
Shell of Alvania eucraspeda (holotype)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Littorinimorpha
Superfamily:	Rissooidea
Family:	Rissoidae
Genus:	Alvania
Species:	A. eucraspeda
Binomial name
Alvania eucraspeda (Hedley, 1911)
Synonyms
Rissoa hulliana var. eucraspedaHedley, 1911 (superseded combination)

Alvania eucraspeda is a species of small sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae. ^[1]

The Australian Faunal Directory considers Rissoa hulliana var. eucraspeda a synonym of Alvania (Alvania) fasciata(Tenison-Woods, 1876) ^[2]

Description

The length of the shell attains 2 mm, its diameter 1.5 mm.

(Original description) This deep-sea variety differs from the typical shore form by being pure white, slightly larger and comparatively broader, and by having fewer and more prominent radials. Thus it acquires a lip broader and more scalloped, approaching a varix. ^[3]

Distribution

The holotype of this species was found off Cape Wiles, South Australia.

References

1. MolluscaBase eds. (2024). MolluscaBase. Alvania eucraspeda (Hedley, 1911). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=867100 on 2024-01-23
2. Australian Faunal Directory: Alvania (Alvania) fasciata
3. Hedley, C. (1911). Report on the Mollusca obtained by the F.I.S. "Endeavour", chiefly off Cape Wiles, South Australia. Part I. in: Zoological Results of the Fishing Experiments carried out by F.I.S. "Endeavour" 1909-10 under H. C. Dannevig, Commonwealth Director of Fisheries, volume 1: 90-114, pls 17-20 This article incorporates text from this source, which is in the public domain .