Anthicus antherinus

This was found by suction sampling a large field that's recently been taken out of production for heathland restoration. I had an idea what it was after running it past ObsIdentify (it was 100% sure but I would never rely on that) but found it a little tricky to key using Duff. Firstly the external tooth on the fore tibia was quite short and hard to see as it did not protrude beyond the hairs. Then once I'd got it to Anthricus I judge the pronotum to be more elongate - it is closer to Duff's diagram for tristis. Hackston doesn't use the pronotum shape and only uses the fore tibial tooth for Anthicus bimaculatus on which it's longer. On this individual there is less red on the elytra (the rear mark is narrower) than is usually the case on this species. Both keys allow for variation though Hackston implies this is rare (Duff seems to imply it's more common).

Anthicus antherinus showing fore tibia, pronotum and head, Wendling Beck Environment Project (Norfolk, UK), 4th March 2025