Worker bees, Mortuary bees and Queen attendants

Eusociality (Greek eu: "good/real" + "social") is a term used for the highest level of social organization in a hierarchical classification.

The lower levels of social organization, presociality, were classified using different terms, including presocial, subsocial, semisocial, parasocial and quasisocial.^[1] In analogy with some human societies, groups of specialized individuals are sometimes called castes.