Hydraena pygmaea
- kingdom: Animalia
- phylum: Arthropoda
- class: Insecta
- order: Coleoptera
- family: Hydraenidae
- genus: Hydraena
- species: Hydraena pygmaea
Lunz am See
Pressbaum
Lower Austria
Grünburg
Waldneukirchen
Upper Austria
Kennelbach
Vorarlberg
Austria
Rodenbach
Weilmünster
Hesse
Biebrich
Dasburg
Steinsberg
Wasenbach
Rheinland-Pfalz
Germany
Bressanone - Brixen
Trentino-Alto Adige
Italy
Findhorn
Findochty
Isle of Arran
Lamlash
Scotland
Glanamman
Hay
Llanrwst
Llantrisant
Pontyclun
Wales
United Kingdom
Tandel