Males are unknown. Abdomen brown above and the legs almost entirely white. Adults are elusive.
Metallus lanceolatus larvae mine the leaves of wild and cultivated avens creating blotch mines.
Size: 3.5 - 4.5mm
Distribution: England, Scotland, Wales
Flight period: Bivoltine, May to June, July to August
Plant associations: Geum spp. (wild and cultivated avens)
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