Fenella monilicornis (Dahlbom, 1835)

Fenella monilicornis

This species was previously conflated with Fenella nigrita. Fenella monilicornis has long antennae (twice the breadth of the head) with 13 to 16 segments. The ratio of the third to fourth antennal segments is about1.2 to 1.0. Vein M is more curved in the basal one-third than in the apical two-thirds.

Larvae are thought to mine the leaves of wood crane's-bill.

Jump to other Fenella species

Size: 3mm

Status: Rare

Distribution: Scotland

Flight period: Assumed bivoltine May to June and August to October

Plant associations: Possibly Geranium sylvaticum and other Geranium spp. (possibly wood crane's-bill and other crane's-bills)

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