Pristiphora glauca - Pristiphora erichsonii group
This species is so similar to Pristiphora wesmaeli that adults cannot often be distinguished. Even the genitalia are hard to distinguish. The earlier emergence of adults and earlier larval feeding period is thought to be a more reliable method of distinguishing between the two species.
Pristiphora glauca larvae feed on European larch and Japanese and Dahurian larch where introduced.
Size: 6.0 - 7.5mm
Distribution: England, Wales
Flight period: March to May
Plant associations: Larix decidua, Larix kaempferi and Larix gmelinii (European larch, Japanese larch and Dahurian larch)
The National Biodiversity Network records are shown on the map below. (See terms and conditions)
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
Prous, M., Kramp, K., Vikberg, V. and Liston, A., 2017. north-Western Palaearctic species of Pristiphora (hymenoptera, tenthredinidae). Journal of Hymenoptera Research, Vol. 59