Empria alector Benson, 1938

Empria alector

A black sawfly within the Empria longicornis group. Pairs of white patches on tergites 2 to 5 and a small fleck on each side of tergite 6. White on the labrum, pronotal margin, inner face of front and middle tibia and tarsus, and extreme apex of femora. Also white on the hind tibia basally. Hind ocelli closer together than their distance from the hind margin of the head. The ratio of the length of the flagellum, along with genitalia characteristics, are important for identification in this group. See Prous et al, 2011.

Empria alector larvae feed on meadowsweet.

Size: 5.5 - 7mm

Status: Locally common

Distribution: England, Scotland, Wales, Ireland

Flight period: May to June

Plant associations: Filipendula ulmaria (meadowsweet)

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

Prous, Marko & Heidemaa, Mikk & Soon, Villu. (2011). Empria longicornis species group: Taxonomic revision with notes on phylogeny and ecology (Hymenoptera, Tenthredinidae). Zootaxa. 2756. 1-39. 10.11646/zootaxa.2756.1.1.