Valvata macrostoma

Valvata macrostoma, also known as the large mouthed valve snail, is a species of small freshwater snail with an operculum, an aquatic gastropod mollusk in the family Valvatidae, the valve snails.^[1]

Valvata macrostoma
A shell of Valvata macrostoma
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Family:	Valvatidae
Genus:	Valvata
Species:	V. macrostoma
Binomial name
Valvata macrostoma Mörch, 1864[2]

Drawing: two views of the shell of Valvata macrostoma

Distribution

This species occurs in the following countries and islands:

• Czech Republic - in Bohemia only^[3]
• Slovakia^[3]
• Poland
• Germany - high endangered (Stark gefährdet)^[4]
• Netherlands
• Great Britain

Ecology

This freshwater snail lives in marshes and very small canals that have a very rich fauna and calcium-rich water.^[5]

Myzyk (2004)^[6] described life cycle of Valvata macrostoma.