Matt Gimmel says about this specimen:
This is something I would place in the group currently misplaced in Dasytes, which properly is a strictly Old World genus (save for one introduced species in British Columbia). However, the species photographed here is probably undescribed. Not sure if there's much else I can say about it, other than members of this group aren't as often collected from flowers of herbs and shrubs; in my experience, they more often get beaten from trees, and one around here I swept from ferns once. They are almost never collected in long series.

Incidentally, this one is actually rather glabrous for a dasytine. The slender build, erect but inconspicuous setae, dark color, and (especially) the pronotal sublateral/basal lines are what points to the " Dasytes" identification.

Best,
Matt