Fenella nigrita Westwood, 1840

Fenella nigrita

Fenella nigrita has short antennae (less than 1.5 times the breadth of the head) with 11 to 12 segments. Vein M is evenly curved in the basal one-third but not so strongly as to appear angular. Black bodied with a pale labrum and pale knees, tibiae and tarsi.

Larvae mine the leaves of cinquefoils and agrimony.

Size: 2 - 3mm

Status: Widespread

Distribution: England, Scotland, Wales, Ireland

Flight period: Bivoltine May to June and August to October

Plant associations: Potentilla reptans, Potentilla grandiflora and Agrimonia eupatoria (creeping cinquefoil, large flowered potentilla and common agrimony)

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