Identificaciones de mettcollsuss

During the Spring Ranch BioBlitz hosted by UNT SER & TWS, we found a lot of fellas out and about, like a lot of ant fellas leading to the massive base on the 4th slide! Unfortunately, the ants were skittering around, so I could not get the camera to focus well :(

Taxonomy as suggested by inat.
Climbing somewhat aimlessly, low on a fabric wall, outside but sheltered by verandah. No other ants seen nearby. Seems to have either dropped a set of wings (no dropped wings seen, I'm just wondering about the marks it has got on one or both sides of thorax, where wings would arise if the ant was ever going to have a winged phase),or perhaps its got a contagion or parasite or something like that to explain the marks (or has escaped from prey eg a spider??).I've no idea about any of the above things in relation to ants, and when I don't know I tend to ramble even more than usual 🤐.