Nematinus acuminatus (Thomson, 1871)

Nematinus acuminatus

Males are unknown. The mesonotum is not marked with black and the mesosternum is only edged with black. The abdomen usually has the bases of several tergites black in the female and the upper surface largely suffused with black in the male. The sawsheath is acuminate in dorsal view.

Nematinus acuminatus larvae feed on birches and occasionally on hazel.

Size: 6 - 7.5mm

Status: Uncommon

Distribution: England, Scotland, Wales, Ireland

Flight period: May to June

Plant associations: Betula spp. and occasionally on Corylus spp. (birches and hazels)

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