This beetle was brought to me in a jar from a golf club in central Norfolk. I placed it on a sunflower tro photograph, it was NOT found on the flower. I thought it was a Cardinal Beetle, Pyrochroa coccinea, but the elytra are tapered to the rear, whereas every image I can find shows them distinctly parallel sided. Could someone please identify it.
This is a longhorn beetle (family Cerambycidae), I think Stictoleptura rubra (a.k.a. Leptura rubra).
Thanks for the excellent photo!
It is a female Stictoleptura (Leptura) rubra. Typical for Stictoleptura is that the back corners of the pronotum are rounded (with no tooth) and that the outer margin of the elytra ends in a sharp tooth. There are, as far as I can tell, only two species in Britain - the all black S. scutellata, which it obviously isn't, and S. rubra of which the males have yellowish/brownish elytrae and a black pronotum, while both the pronotum and elytrae are reddish in the female. Another helpful character is that the femur is black, while the tibia and tarsus are yellowish/reddish, which separates it from most of the similar species. Actually, it is a quite easily recognisable species, especially the females (who, having both the pronotum and the elytrae red, can't be confused with anything else - well, not within Cerambycidae, at least).