The head is black and glossy but with small tubercles. The second antennal segment is noticeably wider than long. The thorax is also black and the mesopleura are sparsely clothes with tubercles. The abdomen is also black. The legs are variable being mostly black. The wings are strongly infuscated.
Larvae food plants are unclear but lady's mantle and strawberries are thought to be likely.
Size: 5.0 - 6.5mm
Distribution: England, Scotland, Wales, Ireland
Flight period: May to June
Plant associations: Possibly Alchemilla spp. and Fragaria spp. (possibly lady's mantles and strawberries)
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
Sheppard, D. A., 2019. British Symphyta (draft in preparation)