This is one of several very similar dark coloured Dolerus species and detailed examination is necessary in order to identify them to species level.
Damp areas, fens, marshes and similar areas where sedges occur.
April and May.
The larvae are associated with sedges.
Infrequent in Britain. Up until the 1950s Dolerus stygius was only known for sure from a few sites in the Highlands of Scotland. It has been recorded much more widely in the last decade or so with sparse scattered records from northern England and as far south as Surrey and Wiltshire.
Rare or under recorded in Leicestershire and Rutland. The Broughton Astley specimen of 27th April 2015 is believed to be the first record of this species in VC55.
Leicestershire & Rutland Map
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Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015