Hydromya dorsalis

Alternative names
Five-spotted Snailkiller

Length 6-7mm. A reddish-brown species with a grey thorax and five spots on each wing, four along vein M1+2 and one at the base of the s-shaped cross-vein.

Similar Species
Identification difficulty
Recording advice

Unless identified by an expert, good quality photos or examination of a specimen are required.


Marshy places with rushes and sedges, especially if prone to seasonal flooding.

When to see it

All year.

Life History

The larvae feed on aquatic snails.

UK Status

Widespread and common across the UK.

VC55 Status

Believed to be common in Leicestershire and Rutland, though only occasionally recorded.

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Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map