MUSSELpdb

Introduction

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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

Publication Alder (1838): summary

publication summary

Full Citation

Alder, J. 1838. Supplemet to a catalogue of the land and fresh-water testaceous Mollusca found in the vicinity of Newcastle-upon-Tyne, with remarks. Trans. Natur. Hist. Soc. Northumbld. Durham 2: 337-342. Available electronically.

Attributed Nominal Species

Taxonomic Opinions

Cyclas calyculata = Sphaerium lacustre
+ Cyclas lacustris Draparnaud, 1806

Cyclas calyculata = Sphaerium nucleus

Pisidium amnicum Jen.
+ Cyclas obliqua Lamarck, 1818

Pisidium cinereum = Euglesa casertana

Pisidium pulchellum Jen. = Euglesa casertana
+ Cyclas fontinalis Draparnaud, 1806

Pisidium pulchellum Jen. = Euglesa pulchella

Pisidium pusillum Jen. = Euglesa personata
+ Cyclas gibba Alder, 1831

Pisidium pusillum Jen. = Euglesa obtusalis