Hydraena testacea
- kingdom: Animalia
- phylum: Arthropoda
- class: Insecta
- order: Coleoptera
- family: Hydraenidae
- genus: Hydraena
- species: Hydraena testacea
- Biesdorf
- Dasburg
- Wallendorf
Rheinland-Pfalz
Germany- Thomastown
Leinster
Ireland- Luxembourg
- Abingdon
- Addlestone
- Adlington
- Audley
- Awsworth
- Battle
- Beighton
- Bleadon
- Bodle Street
- Botesdale
- Brockenhurst
- Broomfleet
- Brough
- Brundall
- Burgess Hill
- Burton
- Burton Constable
- Cadnam
- Canterbury
- Chartham
- Charvil
- Chatham
- Chertsey
- Cheshunt
- Chiddingfold
- Chigwell
- Chorleywood
- Church Stretton
- Clayton-le-Woods
- Cliffe
- Colnbrook
- Colyton
- Congresbury
- Cooling
- Copmanthorpe
- Cottenham
- Cranbrook
- Crowland
- Crowle
- Donisthorpe
- East Harling
- East Molesey
- Edenbridge
- Egham
- Epsom
- Esher
- Euxton
- Exminster
- Eye
- Fordingbridge
- Forest Row
- Gainsborough
- Gravesend
- Great Bookham
- Griston
- Heanor
- Henfield
- High Halstow
- Highbridge
- Hinchley Wood
- Histon
- Hutton
- Hythe
- Ilkeston
- Ipswich
- Iver
- Ivybridge
- Kewstoke
- Kidlington
- Killamarsh
- Kimberley
- Letchworth
- Letchworth Garden City
- Leyland
- Long Eaton
- Loughborough
- Marden
- Measham
- Milford
- Millbrook
- Nether Poppleton
- Newmarket
- Newport
- Paull
- Pevensey
- Pulborough
- Quorndon
- Radcliffe on Trent
- Radlett
- Riccall
- Rickmansworth
- Ripley
- Robertsbridge
- Sandhurst
- Scalby
- Severn Beach
- Shepshed
- Skelton
- Soham
- Sonning
- Stocksbridge
- Stone
- Stonesfield
- Sway
- Tadley
- Thames Ditton
- Thornhaugh
- Tilbury
- Tonbridge
- Torpoint
- Twyford
- Uckfield
- Uttoxeter
- Uxbridge
- Wallasey
- Waltham Abbey
- Waltham Cross
- Wandsworth
- Wansford
- Wargrave
- Wedmore
- Welton
- West Hallam
- Wheatley
- Woking
- Wortley
- Yarnton
- Yatton
- Yaxley
England
United Kingdom