Another series of this beetle, found on vegetation in a suburban deciduous woodland. Length is just under 5 mm. Quoting Ciegler (1), p. 172, key to genera of Cryptocephalinae:
10(9) Anterior edge of proepisternum laterally sinuous or toothed, in many specimens difficult to see (Fig. 285); abdominal sternum 1 of male excavated in middle and with large spine on each side; length 3.2-5.5 mm --> Bassareus, p. 184
Does not seem to have those spines, so must be a female.
I have trouble seeing the sinuous/toothed edge of the episternum in this specimen, but everything else is consistent. This one lacks the spines on abdominal sternum 1, I think, so it should be a female.
Confirmations/corrections always appreciated, of course.
Specimen to be retained for barcoding. Also posted at:
https://www.inaturalist.org/observations/85416969