The entirety of Isoptera is comprised of
eusocial species. Unlike other eusocial groups (e.g.
Formicidae,
Apidae,
Vespidae) termites do not have
haplodiploid genetics, and both males and females maintain the colony. In addition to the primary reproductive
castes (Kings and Queens), and sterile Worker caste, many species also produce a Soldier Caste. Soldiers are not merely larger workers, as is seen in the ants. Their head capsules are uniquely designed for defending the colonies, with various species having different designs, depending on the greatest threats for that species. Most Soldiers cannot feed themselves, and instead rely on Workers to feed and groom them. Soldiers can be recognized by their darker head capsules, and their tendency to be near areas of disturbance.