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Velvet Ants

Dasymutilla occidentalis


The common name of “velvet ant” is misleading because velvet ants are actually wasps. They get the “velvet” part of their name from the very fuzzy females, which are wingless and often brightly colored.


Female velvet ants dig into the nesting chambers of ground-nesting bees and wasps and lay their eggs on the larvae inside. When the immature velvet ant is born, it eats its host and then spins its cocoon within the pupal case of its host.


Female cow killer ants are typically seen running somewhat erratically on the ground, especially on bare or sandy areas in the warm summer months. They occasionally enter structures for insect prey. Males are often found on flowers, although some species are nocturnal.


Female velvet ants have a very potent sting that has earned them the nickname “cow-killer.” Male velvet ants lack a stinger but have wings.

  • Color: Black, with areas of very bright red, orange, yellow or white
  • Legs: 6
  • Shape: Females – wingless, ant-like; Males – winged, wasp-like
  • Size: 1/8 – 7/8” (3-23 mm)
  • Antennae: Yes
  • Region: Found throughout U.S.


Velvet ants are solitary and usually found only one at a time. To avoid these stinging ants, contact a pest management professional to safely remove any cow killer ants found in your home.

RK Environmental Services LLC • 768 Carver Avenue, Westwood, NJ 07675 • [email protected] • 800-996-4402


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