Why are they called red velvet ant ants?
It earned its name by the reputation of the female's sting. It is said that the sting is so painful that it could kill a cow.

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Species of Cow killer
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Scientific Classification
Phylum
Arthropods

Class
Bugs

Order
Bees

Family
Velvet ants

Genus
Cow killer

Species
Red velvet ant (Dasymutilla occidentalis)