Bug Identifier
Ensign Wasp
Community identification

Ensign Wasp

Evaniidae

Order & Family
Order: Hymenoptera; Family: Evaniidae
Size
3 to 7 mm (approximately 0.1 to 0.3 inches) in length.
See this bug in the Encyclopedia

Natural Habitat

Typically found indoors in buildings or outdoors in temperate and tropical environments, often wherever cockroach egg cases are present.

Diet & Feeding

Adults feed on nectar and honeydew; larvae are predatory, specifically consuming the eggs within cockroach oothecae.

Behavior Patterns

Notable for their unique flag-like abdomen that constantly bobs up and down while they walk; they are solitary wasps that specialize as cockroach egg parasites.

Risks & Benefits

They are highly beneficial to humans as they provide natural pest control by destroying cockroach eggs; they do not sting or bite humans.