Cephus spinipes (Panzer, 1800)

Cephus spinipes

Very similar to Cephus pygmeus. Spinipes has bifid claws where the inner tooth is erect and a little distant from the end tooth, whereas in pygmeus the inner tooth is more parallel to the end tooth. The sawsheath in females is angled relative to the oblong plate.

Larvae feed inside grass stems.

 

Status: Common and widespread

Distribution: England, Wales

Flight period: May to July

Plant associations: Grasses including Phleum pratense (timothy-grass).
Adults visit yellow flowers such as composites (dandilion, etc.) and buttercups.

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