Coloured orange and black as per Selandria serva. The third antennal segment is longer than the three apical segments combined. Larger than serva and much less common.
Selandria melanosterna larvae feed on various sedges, grasses and rushes.
Size: 8 - 14mm
Distribution: England, Scotland, Wales
Flight period: Bivoltine, May to September
Plant associations: Cyperaceae, Gramineae and Juncaceae (sedges, grasses and rushes)
The National Biodiversity Network records are shown on the map below. (See terms and conditions)
Benson, R.B., 1952. Handbooks for the Identification of British Insects. Hymenoptera, Symphyta, Vol 6, Section 2(a-c), Royal Entomological Society, London
Liston A, Knight G, Sheppard D, Broad G, Livermore L (2014) Checklist of British and Irish Hymenoptera - Sawflies, ‘Symphyta’. Biodiversity Data Journal 2: e1168. https://doi.org/10.3897/BDJ.2.e1168