EUURA VIDUATA GROUP

Euura leucolena - White-bordered Willow Nematine

Nematus leucolenus Brischke, 1883
Brachycoluma leucolena (Brischke, 1883)
Amauronematus saarineni Lindqvist, 1945
Brachycoluma saarineni (Lindqvist, 1945)
Euura saarineni (Lindqvist, 1945)

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

A mainly black species with pale on the mouth parts, the clypeus, the temples, to some extent the orbits, the tegulae, the edges of the pronotum, the legs and the apex and underside of the abdomen. Males have the tegulae and the femora more or less infuscated. Determination should be confirmed by reference to the genitalia in both genders.

Euura leucolena larvae feed on Grey Willow, Eared Willow and Creeping Willow.

Size: Female: 5.5 - 6.5mm, male: 4.5 - 5.5mm.

GB IUCN status: Near Threatened
GB rarity status: Nationally Rare

Distribution: England, Scotland, Ireland

Flight period: March to May

Plant associations: Salix atrocinerea, Salix aurita and Salix repens. (Grey Willow, Eared Willow and Creeping Willow)

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 Natural England, unpublished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