The only one of the three Prunus associated species that has the upper side of the abdomen predominantly orangy (though it may be black marked). The stigma is darker at the base than the apex and the forewings have a fuscous band under the stigma. The forewing is clear towards the apex and yellowish at the base. The hind tarsus is shorter than the tibia. The males have distinctive penis valves with long curled tails.
Hoplocampa flava larvae feed in the fruits of wild and cultivated plums.
Size: 3.5 to 5.5mm
Status: Locally common
Distribution: England, Scotland, Wales, Ireland
Flight period: April to May
Plant associations: Prunus spp. (wild and cultivated plums)
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
Liston, A., Prous, M. and Vårdal, H., 2019. A review of west palaearctic Hoplocampa species, focussing on Sweden (Hymenoptera, Tenthredinidae). Zootaxa, 4615(1), pp.1-45.