chrysanthemum gall midge

noun

variants or chrysanthemum midge or less commonly chrysanthemum gall fly

: a small orange fly (Diarthronomyia chrysanthemi) forming galls on the flowers and leaves of chrysanthemums especially in greenhouses

The Ultimate Dicitonary 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