EUURA CAERULEOCARPUS GROUP

Euura caeruleocarpus - Dark-winged Nematine

Nematus caeruleocarpus Hartig, 1837
Nematus propinquus Dahlbom, 1835
Nematus sulcipes (Fallén) Hartig, 1837
Nematus brevispinis Förster, 1854
Nematus brachyacanthus Thomson, 1863

North to southern Scotland, moderately frequent (Musgrove, 2024).

In both genders the abdomen is entirely black. In the female is mostly black with brown on the upper and inner orbits and the labrum. The legs are largely yellowish-brown. The cerci are shorter than the sawsheath when viewed from above. The male is coloured much as the female.

Euura caeruleocarpus larvae feed on willows, poplars and members of the buttercup family including Columbine, Delphiniums and Peonies.

Size: Female: 8.0 - 9.0mm, male: 7.5 - 8.5mm.

GB IUCN status: Least Concern
GB rarity status: None

Distribution: England, Scotland, Ireland

Flight period: May, June to August (and sometimes September)

Plant associations: Salix spp., Populus spp. and Ranunculaceae (willows, poplars and members of the buttercup family including columbine, delphiniums and peonies).

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 Natural England, unpublished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