Any of various small insects, such as the gall midge or gall wasp, that deposit their eggs on plant stems or in the bark of trees, causing the formation of galls in which their larvae grow.

• 瘿蝇一种小昆虫，例如瘿蚊或瘿蜂，他们把卵产在植物的茎内或树皮内，幼虫在里面生长并产生虫瘿