Males are unknown. Females have at least the base of the hind femora completely black on at least one face. Entirely black body with pale labrum, clypeus in part, tibiae, tarsi in part and the apices of the femora. The wing venation in this species is unstable and anomolies are common. See LIston et al, 2019.
Endophytus anemones larvae mine the leaves of wood anemones and naturalised wood ginger.
Size: 3 - 4mm
Distribution: England, Wales
Flight period: Mar to May
Plant associations: Anemone nemorosa and Anemone ranunculoides (wood anemone and wood ginger)
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 Vardal, H., 2019. The West Palaearctic Pseudodineura and Endophytus species (Hymenoptera, Tenthredinidae). Zootaxa, 4614(3), pp.511-528.