A small black sawfly with smokey wings. The legs are dark except for the front tibia and usually also the middle tibia. The hind margin of the mesoscutellum and the prepectal sulcus are lined with large punctures. Adults can be found near water bodies where the larval food plant is present.
Stethomostus fuliginosus larvae feed on celery-leaved buttercup.
Size: 5 - 6mm
Distribution: England, Scotland, Wales
Flight period: May to August
Plant associations: Ranunculus sceleratus (celery-leaved buttercup)
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