Collected from a pitfall trap. Images by José M. Flores. Head to apical end of elytra measures 2.5cm. Image at end is to find the ratio of the head to the pronotum for species ID.
I thought it was interesting that this ant and the ants I entered in another observation (https://www.inaturalist.org/observations/86365200) were in exactly the same place. I didn't see them interacting but I suspect they were. I thought they might just be color morphs of the same species.