Pristiphora amphibola (Förster, 1854)

Pristiphora amphibola - Pristiphora nigella group

This species is similar to Pristiphora nigella but female amphibola are almost completely black and with a long sawsheath. Males can be distinguished by the penis valves.

Pristiphora amphibola larvae feed on Norway spruce and sitka spruce.

Size: 4.5 - 5.00mm

Status: Widespread

Distribution: England, Scotland, Wales

Flight period: Assumed April to May

Plant associations: Picea abies and Picea sitchensis (Norway spruce and sitka spruce)

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.D., 1981. Pristiphora (Lygaeophora) lanifica (Zaddach, 1882) new to Britain (Hymenoptera: Tenthredinidae). Entomologist's gazette.

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

Prous, M., Kramp, K., Vikberg, V. and Liston, A., 2017. north-Western Palaearctic species of Pristiphora (hymenoptera, tenthredinidae). Journal of Hymenoptera Research, Vol. 59