Dasymutilla gloriosa, commonly known as the glorious velvet ant, is a species of parasitic wasp found in North America. The females are wingless and covered in dense, velvety hair, which is usually bright red or orange in color. They are known for their painful sting, which is why they are often referred to as "cow killers." Despite their name, they are not actually ants but are a type of solitary wasp.