Eciton hamatum is a species of army ant in the subfamily Dorylinae; it is found from Mexico to central Brazil and Bolivia. The species differs from Eciton burchellii, in that it does not fan out into
Eusociality is the highest level of organization of sociality. It is defined by the following characteristics: cooperative brood care, overlapping generations within a colony of adults, and a division
Co-operative brood rearing, seen here in honeybees, is a condition of eusociality.
Suzanne Batra introduced the term "eusocial" after studying nesting in Halictid bees including Halictus latisignatus, pictured.
Weaver ants, here collaborating to pull nest leaves together, can be considered eusocial, as they have a permanent division of labor.
Swarming Iridomyrmex purpureus ants. The young queens are black, winged, and much larger than the wingless workers.