Keying led to Atholus (truncate anterior edge of mesosternum) but it doesn't really look like any Atholus in the guide. Maybe it should be considered "feebly" emarginate, which would lead to Hister?

[Even though I don't think it's Hister, using (1), it would key to H. depurator (3 entire dorsal striae, lateral stria of metasternum as in H. depurator, metepimeron without lateral striae). But seems too small in size and the mesosternum is shaped differently. Doesn't seem to be a match for any of the Atholus spp. in that publication.]