Bug Identifier
Ensign Wasp
Community identification

Ensign Wasp

Evaniidae

Order & Family
Hymenoptera: Evaniidae
Size
3 to 7 mm (1/8 to 1/4 inch) in length
See this bug in the Encyclopedia

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.