After comparing with the ambusta already in the Guide, I think we can safely move these here.

Moved from Mordellistenini.

Mordellistena ambusta LeConte (now located under Glipostenoda (type here) appears to be a good fit for this one. Ridges should be 3,3,2. And the type appears to show dark coloration on the palpi, something seemingly visible here too. Still, the apparent very robust anal style is troubling, enough to make me at least wonder about some of the few genera that have that characteristic combined with the nearly filiform antenna seen here. Conalia helva would be a possibility, or Glipodes sericans if the size were fully double that stated.

As usual, a decent lateral of the hind leg would do wonders here. Otherwise, I'm of little use.

Moved from Tumbling Flower Beetles.