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.
Status: Probably widespread
Distribution: England, Scotland
Flight period: April to June
Plant associations: Cyperaceae and Graminaceae (sedges and grasses)
The National Biodiversity Network records are shown on the map below. (See terms and conditions)
-
- Dolerus brevicornis male Credit Andrew Green
-
- Dolerus brevicornis male
-
- Dolerus brevicornis penis valve Credit Andrew Green
-
- Dolerus brevicornis penis capsule Credit Andrew Green
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