Approx 3 mm.
Collected at blacklight.
I'm really not sure about the subfamily but feel like it would be a good place to start.
A colony segment found under a rock, no queens or brood visible.
Happy to have seen these guys, I've been wanting to for a while.
Specimen images taken at Arizona State University.
Images:
Minor - profile
Major - profile
Minor - head
Major - head
Minor - dorsal
Major - dorsal
found under a rock, black bodies with white stripes, eggs and winged
Five queen in total where seen. Three were seen at night from 9:00-11:45 PM and two where seen in the morning around 9:00 AM. Most of the queens where found in barren muddy patches with little to no stones or leaves. I assume they have a preference for these types of areas, but it's also possible that their just easier to spot in them. All appeared to be foraging and none were alates.
I suspect that they flew the morning/day before the first queens were seen as that's when I saw (what I assume were) males of this species. It had rained 0.2 inches the day before and 0.3 inches the day of.