Apocrita

Apocrita is a suborder of insects in the order Hymenoptera. It includes wasps, bees, and ants, and consists of many families. It contains the most advanced hymenopterans and is distinguished from Symphyta by the narrow "waist" (petiole) formed between the first two segments of the actual abdomen; the first abdominal segment is fused to the thorax, and is called the propodeum. Therefore, it is general practice, when discussing the body of an apocritan in a technical sense, to refer to the mesosoma and metasoma (or gaster) rather than the "thorax" and "abdomen", respectively. The evolution of a

Aculeata is an infraorder of Hymenoptera containing ants, bees, and stinging wasps. The name is a reference to the defining feature of the group, which is the modification of the ovipositor into a stinger. However, many members of the group cannot sting, either retaining the ovipositor, or having lost it altogether. A large part of the clade is parasitic.

insect abdominal gland

Proctotrupomorpha is a major subgrouping of the Apocrita within the Hymenoptera, containing mainly small parasitic wasps. It contains the major groupings of Chalcidoidea, Diaprioidea, Proctotrupoidea, Cynipoidea and Platygastroidea, as well as the small Mymarommatoidea, and extinct groups like the Serphitoidea. It is well supported by both morphological and genetic evidence, although relationships among the superfamilies are still somewhat in flux.

eusocial hymnopteran behavior where worker females eat or destroy eggs laid by other workers