Stethomostus fuliginosus (Schrank, 1781)

Stethomostus fuliginosus

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.

Larvae feed on celery-leaved buttercup.

 

Size: 5 - 6mm

Status: Widespread

Distribution: England, Scotland, Wales

Flight period: May to August

Plant associations: Ranunculus sceleratus (celery-leaved buttercup)

References:

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