Pristiphora ruficornis - Redhorn Birch Sawyer
Pristiphora ruficornis

This species is similar to Pristiphora melanocarpa but ruficornis has paler antennae at least ventrally. Males are best determined by examination of the penis valves. Determination of the females, is best done by examination of the saw which has setae on the six apical segments.

Pristiphora ruficornis larvae feed on downy birch.

Jump to other species of Pristiphora

Size: 4.0 - 5.5mm

Status: Widespread

Distribution: England, Scotland, Wales, Ireland

Flight period: May to July

Plant associations: Betula pubescens (downy birch)


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.

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

Prous, M., Vikberg, V., Liston, A. and Kramp, K., 2016. North-western Palaearctic species of the Pristiphora ruficornis group (Hymenoptera, Tenthredinidae). Journal of Hymenoptera Research, 51