Species Biology
Identification
Nymph identification: 1.1 to 33 mm in size. Perlidae are identifiable by the thoracic gills, with P. bipunctata nymphs tending to be much lighter in colour than D. cephalotes.
Habitat
Fast flowing streams and rivers with stable substrata.
Life cycle
This species has a merovoltine life history, taking an estimated three years to complete its life cycle. Adult flight period is from April to July and nymphs are present all year.
Distribution
World distribution(GBIF)
Irish distribution
Common and widespread especially in south, west and north west. Has bee recorded from 202 10km squares in Ireland.
Temporal change
Records submitted to Data Centre in 2024
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References
Publications
H.B. Feeley, J-R. Baars & M. Kelly-Quinn (2016) The Stonefly (Plecoptera) of Ireland –
Distribution, Life Histories & Ecology. National Biodiversity Data Centre, Waterford. Ireland.