Eutomostethus gagathinus (Klug, 1816)

Eutomostethus gagathinus

Body entirely black with yellow tibiae, apices of femora and sometimes whole of hind femur. The temples are without punctures and the scutellum has only the hind margin lined with small punctures. Hind wing with an enclosed middle cell.

Larvae feed on rushes and sedges including greater-tussock sedge.

Size: 5 - 7mm

Status: Scarce

Distribution: England, Scotland, Wales

Flight period: Univoltine, May to August

Plant associations: Juncus spp., Carex paniculata, and Carex hirta (rushes, greater-tussock sedge and hairy sedge)

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

Macek, J. (2014) ‘Descriptions of larvae of the Central European Eutomostethus species (Hymenoptera: Symphyta: Tenthredinidae)’, Acta Entomologica Musei Nationalis Pragae, 54(2), pp. 685–692.