Social-wasps
Guides
Brachygastra
Honey Wasps, Mexican Honey Wasps
Brachygastra is a genus of 17 species of social paper wasps in the family Vespidae, commonly known as honey wasps. The genus is notable for being one of the few non-bee insects that produce and store honey in substantial quantities. Species are distributed throughout Central and South America, with one species (B. mellifica) extending into the southwestern United States. The genus exhibits pronounced morphological caste differentiation, with queens typically larger than workers. Nests are arboreal, constructed from chewed plant fibers, and can persist for multiple years in tropical climates.
Dolichovespula
Aerial Yellowjackets, yellowjackets
Dolichovespula is a genus of social wasps in the family Vespidae, commonly known as aerial yellowjackets. These wasps build exposed paper nests in trees, shrubs, or under building overhangs rather than underground. The genus includes approximately 20 species distributed throughout the Northern Hemisphere, with notable members including the baldfaced hornet (D. maculata) and the aerial yellowjacket (D. arenaria). Some species, such as D. arctica, are social parasites that lack a worker caste and infiltrate nests of other Dolichovespula species to exploit their workforce.
Mischocyttarus
Long-waisted Paper Wasps
Mischocyttarus is the largest genus of social wasps, containing over 260 species primarily distributed in the Neotropics. It is the sole member of the tribe Mischocyttarini, distinguished from related tribes by asymmetrical tarsal lobes. These wasps construct simple, single-comb paper nests and exhibit greater social and reproductive flexibility than the related genus Polistes. A few species extend into the Nearctic region, including three in the United States and southwest Canada.
Pemphredoninae
Aphid Wasps
Pemphredoninae is a large subfamily of solitary, parasitoidal wasps in the family Crabronidae, containing over 1,000 species. Members are commonly known as aphid wasps due to the prevalence of aphid predation in many genera, though prey preferences vary consistently by genus. The subfamily has historically been treated as a separate family. Most species nest in pre-existing cavities including hollow stems, twigs, beetle borings, or excavated tunnels in soil or plant material. Several genera exhibit social or communal nesting behaviors, including Microstigmus and Spilomena.
Polistes
Umbrella Paper Wasps, Umbrella Wasps, Paper Wasps
Polistes is a cosmopolitan genus of social paper wasps and the sole genus in the tribe Polistini. With over 200 recognized species, it is the largest genus in the family Vespidae. These wasps construct distinctive open, single-layered umbrella-shaped nests from wood fibers mixed with saliva, typically suspended by a narrow stalk from protected surfaces. They exhibit complex social behavior including dominance hierarchies, kin recognition through learned chemical cues, and cooperative colony founding. While generally less aggressive than yellowjackets, they will defend nests when provoked.
Vespula
yellowjackets, yellow jackets, Ground Yellowjackets
Vespula is a genus of social wasps in the family Vespidae, collectively known as yellowjackets in North America. The genus is distinguished from its sister genus Dolichovespula by a shorter oculomalar space and a stronger tendency to nest underground. Vespula species are widely distributed across the Northern Hemisphere, with most species native to North America and four species (V. austriaca, V. germanica, V. rufa, V. vulgaris) native to Europe. Several species have been introduced outside their native ranges, including V. germanica and V. vulgaris in New Zealand, Australia, South America, and Southern Africa.