The Sapygidae are a family of solitary aculeate wasps. This species is an ectoparasitoid of aculeate wasps or bees. The Bethylidae are a family of aculeate wasps in the superfamily Chrysidoidea. The larvae of all conopids are internal parasites, most of aculeate (stinging) Hymenoptera. His interest in aculeate wasps contributed to how comprehensive the collection has become today. The Sclerogibbidae are a small family of aculeate wasps that are specialist parasites of embiopterans. There is a quadricuspid rachidian tooth, the two main cusps being asymmetrical and aculeate. The mesocone is the most developed, long and aculeate, while the endocone is relatively short.