Moved from Actenodes simi. It’s not possible from the image to tell whether antennomere 4 is “slightly versus strongly” triangular, but antennomeres 4–11 do seem to be distinctly transverse (i.e., wider than long), which suggests this is instead A. acornis.

These comments:
(Antennomere 4 markedly triangular, at widest part nearly twice as wide as 3rd segment.... A. acornis (Say)
(Antennomere 4 slightly triangular, little wider than 3rd segment... A. simi Fisher.)

satisfies me that this must be A. simi. The images even though not as sharp as they could be show that Antennomere 4 is indeed only slightly triangular, and just slightly wider than 3rd segment.