Fenusella glaucopis

A seldom recorded leaf-mining sawfly, with only about 20 records to date, albeit scattered across Britain north to the Inverness area. However, the species continues to be reported in recent years (Musgrove, 2023).

Antennae with 9 segments and more or less infuscate. The apical segment less than 1.5 times as long as the eighth. Pronotum and mesopleura black except for the extreme edges of the pronotum which may be pale (white in the very rare males). Labrum and clypeus more or less yellow or piceous and base of mandible white. In the female the hind femur is infuscate basally.

Fenusella glaucopis larvae feed in mines in the leaves of aspen and white poplar. This species is also known from black poplar on the continent.

Jump to other Fenusella species

Size: Approx. 4 - 6mm

GB IUCN Status: Least concern
GB Rarity Status: None

Distribution: England, Scotland, Wales

Flight period: May

Plant associations: Populus tremula and Populus alba (aspen and white poplar)


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. 2023. A review of the status of sawflies of Great Britain - Phase 2: The Athaliidae and the Tenthredinidae (excluding Nematinae). Natural England, unpublished