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1. Small solitary wasp that produces galls on oaks and other plants
   - gall wasp, cynipid wasp, cynipid gall wasp
    
2. Fragile mosquito-like flies that produce galls on plants
   - gall midge, gall gnat
    
3. Any of various insects that deposit their eggs in plants causing galls in which the larvae feed

Derived forms: gallflies

Type of: dipteran, dipteron, dipterous insect, insect, two-winged insects, wasp

Part of: Cecidomyidae, Cynipidae, family Cecidomyidae, family Cynipidae

Encyclopedia: Gallfly