Bug Identifier
Orange-rumped velvet ant
Community identification

Orange-rumped velvet ant

Dasymutilla occidentalis

Order & Family
Hymenoptera: Mutillidae
Size
10 to 19 mm in length
See this bug in the Encyclopedia

Natural Habitat

Open fields, pastures, and sandy areas primarily in eastern North America.

Diet & Feeding

Adults feed on nectar, while larvae are external parasites of other ground-nesting bees and wasps.

Behavior Patterns

The wingless females, like the one pictured, are known for their extremely painful sting and tough exoskeleton. They are solitary and active during the day.

Risks & Benefits

The sting is exceptionally painful, earning them the nickname 'cow killer,' though they are generally not aggressive unless handled. They help control the populations of ground-nesting bees and wasps.