MUSSELp

MUSSELpdb

Introduction

Browse

d'basing

Search the MUSSELpdb

Taxonomy

all genera

Unionidae

Margaritiferidae

Hyriidae

Etheriidae

Mycetopodidae

Iridinidae


Species & Genus Richness by
Taxonomy

Geography

Summary

North America

Central America

South America

Afrotropics

North Eurasia

East Asia

Australasia


Species Richness & Endemism by
Geography

Data last updated
Mon 1 Dec 2025

Bivalvia | Sphaerioida | Sphaerioidea | Sphaeriidae | Sphaeriinae | Euglesa milium

nominal species Pisidium tetragonum Normand, 1854

Pisidium tetragonum Normand, 1854 = Euglesa milium

Normand, 1854. Cycl. Dépt. Nord. 5: 5.

= Euglesa milium

Taxonomic Opinions

= Euglesa (Tetragonocyclas) tetragonum (Normand, 1854) — Vinarski & Kantor, 2016

+ Pisidium milium Held, 1836 — Fauna Europaea, 2012

= Tetragonocyclas tetragona (Normand, 1854) — Kantor et al., 2010

= Tetragonocyclas tetragona (Normand, 1854) — Starobogatov et al., 2004

+ Pisidium milium Held — Prime, 1895

+ Pisidium milium Held — Clessin, 1874

+ Pisidium gassiesianum Dupuy — Prime, 1870

 
NSF icon MUSSEL icon
"Making the world a better place, one mollusk at a time."