Noun gallfly has 3 senses
- gall wasp, gallfly, cynipid wasp, cynipid gall wasp - small solitary wasp that produces galls on oaks and other plants
--1 is a kind of wasp
--1 is a member of Cynipidae, family Cynipidae
- gall midge, gallfly, gall gnat - fragile mosquito-like flies that produce galls on plants
--2 is a kind of dipterous insect, two-winged insects, dipteran, dipteron
--2 is a member of Cecidomyidae, family Cecidomyidae
--2 has particulars: Hessian fly, Mayetiola destructor
- gallfly - any of various insects that deposit their eggs in plants causing galls in which the larvae feed
--3 is a kind of insect
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