Fenusella glaucopis
Antenae with 9 segments and more or less infuscated. 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 infuscated 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.
Size: Approx. 4 - 6mm
Status: Rare
Distribution: England, Scotland, Wales
Flight period: May
Plant associations: Populus tremula and Populus alba (aspen and white poplar)
The National Biodiversity Network records are shown on the map below. (See terms and conditions)
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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