(1)any of various tiny insects whose larvae are parasites on eggs and larvae of other insects; many are beneficial in destroying injurious insects
(2)幼虫が他の昆虫の卵と幼虫の寄生虫である各種の微小な虫
(3)多くは害虫を駆除する益虫
(4)a variety of chalcid fly
(5)アシブトコバチの一種