I took these images while casually shooting insects nectaring on Ligularia gigantea (my excuse for poor image quality). Slapped the observation on iNaturalist as T. marginatus. Recently upupa_epops (Caleb) suggested that this was not good ol’ marginatus. I sent the images to Martin Hauser who agreed that it matched no known US-Canada species.

After sleuthing journals and a flurry of emails among several experts this appears to be closest to T. mutuus, known from Mexico, based on abdominal pattern only. Of course, no hard species designation can be made on the basis of these two images, but I thought it should be shared with the BugGuide community in case others are collected from Texas or states adjoining Mexico.

iNaturalist observation: https://www.inaturalist.org/observations/1231865