Dolerus brevicornis Zaddach, 1859

Dolerus brevicornis

Dolerus brevicornis only recently separated from Dolerus asper as a species in Britain. Males can be determined by the penis valve shape and the phenology. In females, the setae on dorsolateral edge of pronotum are distinctly shorter than the diameter of an ocellus and the clypeus is more or less symmetrical with the emargination approximately one third as deep as its median length. See Heidemaa et al for key.

Larvae feed on sedges and grasses.

Status: Probably widespread

Distribution: England, Scotland

Flight period: April to June

Plant associations: Cyperaceae and Graminaceae (sedges and grasses)

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

Heidemaa, M.I.K.K., Nuorteva, M., Hantula, J. and Saarma, U., 2004. Dolerus asper Zaddach, 1859 and Dolerus brevicornis Zaddach, 1859 (Hymenoptera: Tenthredinidae), with notes on their phylogeny. European Journal of Entomology, 101(4), pp.637-650