Tenthredo velox Fabricius, 1798

Tenthredo velox

Antenna partly pale from the third segment underneath and in the female ringed pale apically. The stigma and costa are dark. The head and thorax has dense coiaceous surface sculpture. The female is mostly black bodied with reddish legs, whilst the male abdomen is red from the third tergite to the apex.
Larvae feed on a range of plants. Perhaps associated with upland areas.

Size: 8 - 11mm

Status: Local

Distribution: England, Scotland, Wales

Flight period: June to August

Plant associations: Polygonum bistorta (bistort), Senecio fuchsia (wood ragwort), Salix (willow), Alnus viridis (alder).

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

Fekete, K. (2018) Beginner’s guide to identifying British Tenthredo, Natural History Museum, London. http://www.nhm.ac.uk/content/dam/nhmwww/take-part/identification-trainers/sawflies-guide-id-trainees.pdf [Accessed 26Apr2019]