1. gallfly

noun. small solitary wasp that produces galls on oaks and other plants.


  • cynipid wasp
  • family Cynipidae
  • gall wasp
  • Cynipidae
  • wasp

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2. gallfly

noun. fragile mosquito-like flies that produce galls on plants.


  • dipteron
  • Hessian fly
  • Mayetiola destructor
  • two-winged insects
  • dipterous insect
  • family Cecidomyidae
  • gall gnat
  • gall midge
  • dipteran

3. gallfly

noun. any of various insects that deposit their eggs in plants causing galls in which the larvae feed.

Sentences with gallfly

1. Noun, singular or mass
For instance, the thistle-stem gallfly chews on the stem of Canadian thistle and peacock fly kills yellow star thistle.