6.And even if they had some characteristics of eusocial insects, hell ants might not have been able to survive if they were only in groups of 100 or so.
7.Now, while entomologists can understand modern eusocial ants by studying colonies in action, it gets a bit trickier with extinct groups, like the hell ants, because we can't directly observe their behavior.
8.This gland secretes fluids that are thought to help the ants keep clean, as well as communicate with each other, and this communication is thought to be another part of eusocial behavior.
9.And ants today are well-known for being eusocial insects—they have a division of labor, create colonies with multiple generations of adults, and many of the adults care for young that aren't their own.