Nymph identification: 0.7 to 9 mm in size. This species is separated from the similar species L. inermis by examining the first four abdominal terga which will lack long thick black bristles (note these hairs may be present on terga 5 to 9).
Streams, rivers and lakes.
Univoltine - produces one brood in a year. Adult flight period is from February to June. Nymphs present from August to March.
Common and widespread throughtout the country. Recorded from 241 10 km squares in Ireland.
Records submitted to Data Centre in 2020
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Distribution, Life Histories & Ecology. National Biodiversity Data Centre, Waterford. Ireland.