Pamphilius histrio
A large, fairly pale Pamphilid. The head is yellow with black markings. The female thorax is richly marked with yellow and the male less so. In both sexes, the venation is yellow in the stigma, basal part and the anterior margin of the forewing, with the rest of the venation being brown. The abdomen is yellow brown above with varying degrees of black on tergites 1 to 3 and apically.
Pamphilius histrio larvae feed singly in leaf rolls primarily on 3 to 5 metre high aspens.
Size: Male: 10 - 13mm, Female: 11 - 14mm
Status: Uncommon
Distribution: England, Scotland, Wales
Flight period: May to July
Plant associations: Populus spp. incl. Populus tremula and Populus alba (poplars incl. aspen and white poplar)
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.