Bug Identifier
Tarantula Hawk Wasp
Community identification

Tarantula Hawk Wasp

Pepsis or Hemipepsis species

Order & Family
Hymenoptera, Pompilidae (Spider Wasps)
Size
Typically 15-50 mm (0.6-2 inches) in length, making them among the largest wasps.
See this bug in the Encyclopedia

Natural Habitat

Arid and semi-arid regions, grasslands, woodlands, and deserts around the world, especially in the southwestern United States.

Diet & Feeding

Adults feed on nectar and pollen from flowers. The larvae are carnivorous, feeding on tarantulas paralyzed by the female wasp.

Behavior Patterns

Female tarantula hawk wasps are solitary hunters. They sting and paralyze tarantulas, then drag them to a burrow where they lay a single egg on the spider's abdomen. The wasp larva hatches and feeds on the living but paralyzed tarantula. Males patrol for females and nectar sources. They are generally not aggressive towards humans but will deliver a powerfully painful sting if provoked.

Risks & Benefits

Risk: Their sting is considered one of the most painful insect stings in the world, though not typically medically dangerous for humans unless allergic. Benefit: They play a role in controlling tarantula populations, and adults are pollinators of various flowers.