Hoplocampa ariae
The abdomen is largely pale but the basal tergites may be marked with black. Wings are yellowish (creamy white in the similar Hoplocampa alpina). Sunken parts of the mesonotum are are mainly pale in the female but more or less black in the male. Males can be determined by the penis valves.
Larvae feed on the fruits of broad-leaved rowans.
Size: 4.5 to 6.5mm
Status: Local
Distribution: England, Ireland
Flight period: May to June
Plant associations: Sorbus aria and possibly other Sorbus spp. (rowans)
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