Sterictiphora geminata

One of two species in this genus present in Britain and Ireland. The abdomen is mostly black with a bronze sheen (in S. angelicae only the first two tergites are black) and thorax surface is dulled by microsculpture and puncturation.

Sterictiphora geminata larvae feed on roses and occasionally Mountain Ash. Other larvae of this genus feed from the edge of the leaf working inwards in a meandering zig-zag pattern similar to the Elm Zig-zag sawfly.

Jump to other Argidae

Status: Local

Distribution: England, Scotland, Wales, Ireland

Flight period: April to June

Plant associations: Rosa spp. (roses) (1) and Sorbus aucuparia (Mountain Ash) (2)

References:

1. Benson, R.B., 1952. Handbooks for the Identification of British Insects. Hymenoptera, Symphyta, Vol 6, Section 2(a-c), Royal Entomological Society, London

2. Liston, A., 1995. Compendium of European Sawflies, Chalastos Forestry, Daibersdorf

3. 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

4. Lorenz, H. and Kraus M., 1957. Die Larvalsystematik der Blattwespen (Tenthredinoidea und Megalodontoidea). - Abhandlungen zur Larvalsystematik der Insekten No. 1. Berlin: Akadamie - Verlag