ensign fly

noun

variants or ensign wasp

: a parasitic wasp (family Evaniidae) having the abdomen carried high on a long pedicel and larvae that live in the oothecae of cockroaches and feed on their eggs

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now