Definitions for velvet ant
Random House Webster's College Dictionary
any of several fuzzy, often brightly colored wasps of the family Mutillidae, the wingless, antlike female of which inflicts a severe sting.
Origin of velvet ant:
a solitary wasp of the family Mutillidae; the body has a coat of brightly colored velvety hair and the females are wingless
A wasp of the family Mutillidae with dense hair and whose wingless females resemble ants.