Female: Head marked with dark yellow, black and ivory areas. The thorax is black but with tegulae and pronotal corners marked with yellow. Abdomen black with tergites 2 to 5 and apically orange-brown. The stigma of the forewing is bicolorous.
Male: Head black with yellow genae and temples. The underside of the thorax and abdomen is largely yellow. The abdomen is black with a varying amount of yellowish-brown at least on tergites 4 and 5 and the lateral faces of the following tergites. The stigma is less conspicuously bicolorous (basally brownish-yellow and apically light brown).
A single egg is laid on the underside of a rose leaflet. Pamphilius inanitus larvae feeds inside a leaf roll made by adding in other leaflets to form a cigar-like roll.
Size: 7 - 11mm
Status: Uncommon, but widespread
Distribution: England, Scotland, Wales, Ireland
Flight period: May to June
Plant associations: Rosa spp and occasionally Prunus spinosa (thin-leaved roses and occasionally blackthorn)
The National Biodiversity Network records are shown on the map below. (See terms and conditions)
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.