The Society for the study of flies (Diptera)

I swept two males of this species (I think) at Ditchford Lakes and Meadows Nature Reserve SP933680 on 26.v.2017 during the Dipterists Forum Spring Field Meeting. They keyed out straightforwardly to this species using Steven Falk's Draft Test Key to British Blowflies and Woodlouse Flies. Here are some rather poor photos taken with a bridge camera indoors. As this is reportedly a scarce fly it would be good to have it confirmed. I have upped the contrast and brightness to try to show the dusted dorsocentral stripes on the thorax and and dusting on the basal corners of the tergites. It has longish hairs on the arista, but not plumose and the palpi and antennae are entirely black.