Cataglyphis lutea (UAE and parts of India) is a desert dwelling ant, the photos of this ant on iNaturalist caught my eye, since, like Leptomyrmex erythrocephalus (the Spider Ant of Australia), this these little ants fold their gasters over their mesonoma.

Very little is known about Cataglyphis lutea, shockingly little. I can't even find a mention of gaster folding in any of the brief descriptions of this ant.

*This* is why descriptions are not enough.

Yes we have identified thousands of species of ants, but for many all that means in a single dry sample in a museum drawer and five or six sentences describing the ant. We know nothing of the ants behavior, their interactions with other ants and arthropods, their role in the environment.

Leptomyrmex erythrocephalus, is called the "spider ant" but it's not even clear if this ant is trying to mimic a spider, or mimic anything at all. As for what C. lutea is doing? These are her mysteries.

(photos by Jonghyn Park and TimL)

I was able to find a paper about the genus Cataglyphis that uses some serious geometry to make the case that raising their gaster may improve mobility. But, this paper did not cover ants that fold the gaster all the way over as these ants do.