Abundant at this site, visiting cosmos and sunflowers. There were no M. desponsus present that I ever saw (nor did I even see any thistles), but M. trinodis and agilis were highly abundant. Keying this out on DiscoverLife brought me to T. donatus, the same as a prior observation from the same site:

Though, this current individual and others I saw at this time definitely had white hair, not pale yellow, which is somewhat unclear in the old observation. It was noted on iNat that the specimen resembles T. helianthi more, however.
I have other angles of this specimen as well as photos of a male if needed for ID.