gall·fly /ˈgɔlˌflaɪ/
 五倍子蟲


 Gall·fly n.; pl. Gallflies  Zool. An insect that deposits its eggs in plants, and occasions galls, esp. any small hymenopteran of the genus Cynips and allied genera. See Illust. of Gall.

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 gallfly
      n 1: small solitary wasp that produces galls on oaks and other
           plants [syn: gall wasp, cynipid wasp, {cynipid gall
           wasp]
      2: fragile mosquito-like flies that produce galls on plants
         [syn: gall midge, gall gnat]
      3: any of various insects that deposit their eggs in plants
         causing galls in which the larvae feed