Aculeata

Aculeata Temporal range: Late Jurassic–Recent PreꞒ Ꞓ O S D C P T J K Pg N
Vespula vulgaris
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Suborder:	Apocrita
Infraorder:	Aculeata (but see text)
Superfamilies
Apoidea Chrysidoidea Formicoidea Pompiloidea Scolioidea Tiphioidea Thynnoidea Vespoidea

Aculeata is a subclade 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.

This group includes all of the eusocial Hymenopterans. It is theorized that the possession of a venomous sting was important in the repeated evolution of eusociality within Hymenoptera.

The oldest aculeates are known from the Late Jurassic Karabastau Formation of Kazakhstan, represented by the family Bethylonymidae, which may be para or polyphyletic.^[1]