Mainly black with pale legs. Abdomen shining. The scutellum is longer than broad and acutely angled in front. Claws without an inner tooth.
Larvae feed on pines, especially Scots pine. Small trees up to 1.5m are preferred. Larvae feed in groups on young needles initially, then moving on to old needles. Microdiprion pallipes can be bivoltine in years with favourable weather and the two generations can overlap.
Size: 5 - 7mm
Distribution: England, Scotland, Wales
Flight period: Univoltine May to June, or bivoltine May to June, July to August in warmer years
Plant associations: Pinus spp., especially sylvestris (pines, especially Scots pine)
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
Mallach, N. 1974: Zur Kenntnis der Kleinen Kiefern-Buschhornblattwespe, Diprion (Microdiprion) pallipes (Fall.) (Hym., Diprionidae). Teil 3: Populationsökologie. - Zeitschrift für angewandte Entomologie, Berlin 75: 337- 380
Olofsson, E., 1994. Biology and outbreaks of Microdiprion pallipes (Hymenoptera; Diprionidae) in Sweden, Studia Forestalia Suecica, vol. 193, Uppsala