EUURA MILIARIS GROUP

Euura miliaris - Army Willow Nematine

Tenthredo miliaris Panzer, 1797
Nematus miliaris (Panzer, 1797)
Nematus testaceus Stephens, 1835
Nematus solitarius Zadach, 1883
Pontania capreae (Linnaeus, 1758)

North to Orkney, seemingly widespread and common (Musgrove, 2024).

The female of this species is similar to Euura fagi. Males of the two species cannot be distinguished. In miliaris the female hind basitarsus is no longer than four times the apical breadth, whereas in fagi the basitarsus is clearly more than four times as long as broad. The head, mesonotum and often the abdomen are mainly brown or orange-yellow, usually flecked with black, and the abdomen is more or less black above.

Euura miliaris larvae feed gregariously on willows and sometimes poplars.

Size: 7.5 - 9.0mm.

GB IUCN status: Least Concern
GB rarity status: None

Distribution: England, Scotland, Wales, Ireland

Flight period: May to June, July to August

Plant associations: Salix spp., and sometimes Populus spp. (willows and sometimes poplars).

The National Biodiversity Network records are shown on the map below. (See terms and conditions)

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

Musgrove, A.J. 2024. A review of the status of sawflies of Great Britain - Phase 3: The Tenthredinidae (subfamily Nematinae). Natural England, unpublished

Prous, M., Liston, A., Kramp, K., Savina, H., Vårdal, H. and Taeger, A., 2019. The West Palaearctic genera of Nematinae (Hymenoptera, Tenthredinidae). ZooKeys, 875, p.63-127