EUURA MYOSOTIDIS GROUP

Euura parvilabris (=Nematus nubium) - Cloud Nematine

Nematus parvilabris Thomson, 1863
Pteronidea nubium Benson, 1935
Nematus nubium (Benson, 1935)
Pteronidea roberti Lindqvist, 1958
Polynematus parvilabris (Thomson, 1863)
Pachynematus abstrusus Lindqvist, 1949
Euura nubium (Benson, 1935)
Pachynematus parvilabris (Thomson, 1863)

Benson recorded this species high in the Breadalbanes in 1932 and the Cairngorms in 1934 (Benson 1935). Specimens were taken from Salix herbacea, which was thus presumed the likely foodplant. There have been no subsequent records. It is hard to conclude it is extinct given the low level of recording in the high mountains, although perhaps should be considered at potential risk. There are over 300 hectads with the presumed foodplant though (Musgrove, 2024).

An almost entirely black species with pale on the labrum, cerci and on the legs the tibiae and tarsi. The tarsi are pale. This is a species of the arctic-alpine zone. Males are probably undistinguishable from Euura reticulata.

Euura parvilabris larvae are undescribed but presumably associated with a montane plant.

Size: 4.0 - 5.0mm.

GB IUCN status: Data Deficient
GB rarity status: Unclear

Distribution: Scotland

Flight period: June

Plant associations: Unknown

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 Natural England, unpublished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