Dasymutilla quadriguttata, commonly known as the red velvet ant or cow killer, is a species of wingless wasp found in North America. The females are large and covered in dense, velvety red or orange hair, while the males have wings and are smaller in size. Despite their name, they are not ants but solitary wasps, known for their painful sting. They are often found in open grasslands and are known for their striking appearance.