Hydraena pygmaea
- kingdom: Animalia
- phylum: Arthropoda
- class: Insecta
- order: Coleoptera
- family: Hydraenidae
- genus: Hydraena
- species: Hydraena pygmaea
Lunz am See
Pressbaum
Lower AustriaGrünburg
Waldneukirchen
Upper AustriaKennelbach
Vorarlberg
AustriaRodenbach
Weilmünster
HesseBiebrich
Dasburg
Steinsberg
Wasenbach
Rheinland-Pfalz
GermanyBressanone - Brixen
Trentino-Alto Adige
ItalyFindhorn
Findochty
Isle of Arran
Lamlash
ScotlandGlanamman
Hay
Llanrwst
Llantrisant
Pontyclun
Wales
United Kingdom