Pamphilius fumipennis
Predominantly black with yellow legs. The antennal scape is entirely yellow (unlike in the similar Pamphilius sylvaticus).
Larvae feed singly in leaf rolls rolled towards the underside. On the continent, grey alder is the preferred foodplant but in Britain the associate foodplant is usually hazel. Grey alder is now widely planted in Britain in amenity landscaping projects.
Size: 8 - 11mm
Status: Uncommon
Distribution: England, Wales
Flight period: May to June
Plant associations: Corylus avellana and Alnus incana (hazel and grey alder)
The National Biodiversity Network records are shown on the map below. (See terms and conditions)
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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
Viitasaari, M. ed., 2002. Sawflies (Hymenoptera, Symphyta), I: a review of the suborder, the Western Palaearctic taxa of Xyeloidea and Pamphilioidea. Tremex Press.