A wasp is any kind of pest of the order Hymenoptera and suborder Apocrita that is neither a bee nor an ant. The Apocrita have a typical evolutionary ancestor and also create a clade; wasps en masse do not create a clade, but are paraphyletic relative to bees as well as ants.
The most commonly recognized wasps, such as yellow jackets and hornets, are in the family Vespidae as well as are eusocial, cohabiting in a nest with an egg-laying queen and also non-reproducing employees.
Eusociality is favoured by the unusual haplodiploid system of sex decision in Hymenoptera, as it makes siblings incredibly carefully related to each other.
Nonetheless, most of wasp types are solitary, with each grown-up female living and breeding independently. A lot of the solitary wasps are parasitoidal, implying that they elevate their young by laying agitate or in various other bugs (any type of life phase from egg to grown-up).
Unlike true parasites, the wasp larvae ultimately kill their hosts. Solitary wasps parasitize nearly every parasite bug, making wasps important in horticulture for biological bug control of species such as whitefly in tomatoes and other crops.