These 121 genera belong to the family Mutillidae, velvet ants. [1] [2] [3] [4] [5]
Data sources: i = ITIS, [1] c = Catalogue of Life, [2] g = GBIF, [3] b = Bugguide.net [4]
The Mutillidae are a family of more than 7,000 species of wasps whose wingless females resemble large, hairy ants. Their common name velvet ant refers to their resemblance to an ant, and their dense pile of hair, which most often is bright scarlet or orange, but may also be black, white, silver, or gold. Their bright colors serve as aposematic signals. They are known for their extremely painful stings,, and has resulted in the common name "cow killer" or "cow ant" being applied to the species Dasymutilla occidentalis. However, mutillids are not aggressive and sting only in defense. In addition, the actual toxicity of their venom is much lower than that of honey bees or harvester ants. Unlike true ants, they are solitary, and lack complex social systems.
The Pompilinae are a subfamily of the spider wasp family, Pompilidae, the species of which lay their eggs on the paralyzed bodies of their prey.
The Thynnidae are a family of large, solitary wasps whose larvae are almost universally parasitoids of various beetle larvae, especially those in the superfamily Scarabaeoidea. Until recently, the constituents of this family were classified in the family Tiphiidae, but multiple studies have independently confirmed that thynnids are a separate lineage.
The Chyphotidae are a family of wasps with wingless females similar to the Mutillidae, differing most visibly in the presence, in females, of a suture separating the pronotum from the mesonotum. These species are found primarily in arid regions in the southwestern United States and adjacent regions in Mexico.
Aulacus is a genus of aulacids, ensigns, and gasteruptiids in the family Aulacidae. There are 77 species of Aulacus.