小蜂

By surface analysis, 小(こ) (ko, “small”) + 蜂(はち) (hachi, “hymenopteran”).

小(こ)蜂(ばち) or 小蜂(コバチ) • (kobachi) 

1. chalcidoid (Chalcidoidea)

• As with many terms that name organisms, this term is often spelled in katakana, especially in biological contexts (where katakana is customary), as コバチ (kobachi).