A black sawfly with pairs of white patches on tergites 2 to 5 (or 6). The labrum, hind margin of pronotum are white. The tegulae are also marked with white. The clypeus is deeply excised in front to about half its length and with a small middle tooth (one fifth the length of the lateral teeth). Antennae about 2 to 2.5 times the breadth of the head. Claws with a large, thin inner tooth.
Larvae are undescribed.
Size: 6 - 8mm
Distribution: England, Scotland, Wales, Ireland
Flight period: May to July
Plant associations: Unknown
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
Prous, Marko & Heidemaa, Mikk & Soon, Villu. (2011). Empria longicornis species group: Taxonomic revision with notes on phylogeny and ecology (Hymenoptera, Tenthredinidae). Zootaxa. 2756. 1-39. 10.11646/zootaxa.2756.1.1.