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. The ratio of the length of antennal segment three to four is about 1.6 to 1.0. 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.

Jump to other Fenella species

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