Pisidium supinum explained

Pisidium supinum is a species of minute freshwater clam, a pea clam, an aquatic bivalve mollusc in the family Sphaeriidae (the fingernail clams and pea clams.)

The shell of this species is 3 to 5 mm in size, and is roughly triangular in shape.

Distribution

Its native distribution is Palearctic.

• Czech Republic – in Bohemia, in Moravia,^[1] vulnerable (VU)^[2]
• Germany – endangered (gefährdet)^[3]
• Nordic countries: Denmark, Finland (endangered^[4]), Norway and Sweden (not recorded in Faroes, Iceland)

Notes and References

1. Horsák M., Juřičková L., Beran L., Čejka T. & Dvořák L. (2010). "Komentovaný seznam měkkýšů zjištěných ve volné přírodě České a Slovenské republiky. [Annotated list of mollusc species recorded outdoors in the Czech and Slovak Republics]". Malacologica Bohemoslovaca, Suppl. 1: 1-37. PDF.
2. Red List of the molluscs (Mollusca) of the Czech Republic http://mollusca.sav.sk/malacology/redlist.htm
3. Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 109,
4. Web site: Threatened and Near Threatened molluscs . 2001 . www.environment.fi . Finnish Environment Institute . 11 April 2012 . dead . https://web.archive.org/web/20130511195046/http://www.ymparisto.fi/default.asp?node=8662&lan=en . 11 May 2013 .