
Community identification
Ensign Wasp
Evaniidae
- Order & Family
- Hymenoptera: Evaniidae
- Size
- 3 to 7 mm (1/8 to 1/4 inch) in length
Natural Habitat
Commonly found in and around human buildings, particularly in urban areas where cockroaches are present.
Diet & Feeding
Adults feed on plant nectar and honeydew; the larvae are predators that eat the eggs of cockroaches.
Behavior Patterns
They are easily identified by their small, flag-like abdomen which they bob up and down while walking. They are solitary and seek out cockroach egg cases (oothecae) to lay a single egg inside.
Risks & Benefits
Highly beneficial to humans as they act as a natural biological control for cockroach populations; they do not sting or bite humans or pets and are completely harmless.