Acantholyda posticalis

Acantholyda posticalis is one of two species in this genus in Britain. The head and thorax is richly marked with cream on a black background. The abdomen is black above with orange sides and white underside. Most often found in the Caledonian pine forests of Scotland.

Larvae feed on pine in communal webs.

Jump to other Pamphiliidae

Size: 11 - 15mm

Status: Local

Distribution: England, Scotland

Flight period: May to July

Plant associations: Pinus spp. (two-needle pines) incl...
Pinus sylvestris (Scots pine) preferred (3)
Pinus nigra (Austrian pine) (3)


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, Knight G, Sheppard D, Broad G, Livermore L (2014) Checklist of British and Irish Hymenoptera - Sawflies, ‘Symphyta’. Biodiversity Data Journal 2: e1168.

3. Viitasaari, M. ed., 2002. Sawflies (Hymenoptera, Symphyta), I: a review of the suborder, the Western Palaearctic taxa of Xyeloidea and Pamphilioidea (Vol. 1). Tremex Press.