Ensign Wasp

Natural Habitat

Found globally, often indoors or near structures where cockroaches are present; naturally occurring in forests and grasslands.

Diet & Feeding

Adults feed on flower nectar and honeydew; larvae are predatory, feeding exclusively on cockroach eggs within their cases (oothecae).

Behavior Patterns

Active during the day; they are solitary wasps known for their characteristic 'flag-like' abdomen that they jerk up and down while walking. They do not build nests.

Risks & Benefits

Highly beneficial to humans as they act as a natural biological control for cockroach populations; they do not sting or bite humans and are considered harmless.

Identified on: 3/24/2026