A small genus with only three species globally. In Britain and Ireland represented by the single species.
The adult is small (4 to 5mm.) and black except for the pale knees and tibiae of the front and mid legs. In the forewing the anal cell is complete with an angled cross vein and has a short spur at the shoulder where 2A meets 3A. The anal cell of the hindwing is petiolate. The clypeus is truncate. The second antennal segment is longer than broad, the third segment is longer than the fourth.
The larvae graze the surface of rose leaves skeletonizing the leaf.
Endelomyia aethiops (Gmelin, 1790)
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
Smith, D. R. 1971: Nearctic Sawflies. III. Heterarthrinae: Adults and larvae (Hymenoptera: Tenthredinidae). - Technical Bulletin, U.S. Department of Agriculture, Washington 1420: 1-84