Sirex areolatus (Cresson, 1867)

Sirex areolatus

Native to North America and probably only found in Britain when emerging from imported timber. Adult have predominantly blue-black legs, head, and thorax. The female abdomen is wholly blue-black and in the male it is black only on the basal and apical abdominal segments, with the central tergites being red-brown. The wings are smoky to violaceous.

Sirex areolatus larvae feed in timber of various coniferous species for up to 3 years.

Jump to other Sirex species

Size: Approx. 10 to 40mm

Status: Common

Distribution: England (not established)

Flight period: June to October

Plant associations: Pinaceae spp. (pines, cedars, junipers, firs, redwood)

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