EUURA OBLITA GROUP

Euura leucapsis - White-shield Leaf-galler

Nematus leucapsis Tischbein, 1846
Phyllocolpa leucapsis (Tischbein, 1846)
Nematus alienatus Förster, 1854
Nematus coriaceus Benson, 1953
Phyllocolpa rolleri Liston, 2005
Phyllocolpa coriacea (Benson, 1953)

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

Phyllocolpa leucapsis, alienata and Pontania coriacea are all now considered to be one species. The species shows some variability in colour. See Liston et al (2017) for determination.

Euura leucapsis larvae feed on grey willow, eared willow and atypically on downy willow. The larvae cause a leaf fold, either spirally twisted or a marginal fold.

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Size: Female: 3.1 - 4.1mm, male: 3.3 - 3.8mm

GB IUCN status: Least Concern
GB rarity status: None

Distribution: England, Scotland, Wales, Ireland

Flight period: Uni- or bivoltine, May to August

Plant associations: Salix cinerea, Salix aurita and atypically on Salix lapponum (grey willow, eared willow and atypically on downy 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.D., Heibo, E., Prous, M., Vårdal, H., Nyman, T. and Vikberg, V., 2017. North European gall-inducing Euura sawflies (Hymenoptera, Tenthredinidae, Nematinae). Zootaxa, 4302(1), pp.1-115.

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 Natural England, unpublished