The Bethylidae are a family of aculeate wasps in the superfamily Chrysidoidea. As a family, their biology ranges between parasitoid wasps and hunting wasps.
Like most of the Chrysidoidea, the Bethylidae are stinging Hymenoptera and most are parasitoids. Some of them, however, have developed their parasitoidal biology along predatory lines and they sting and malaxate their victims into paralysis. Then they hide the prey and lay their eggs on them.
According to Azevedo et al. (2018) there are 96 genera belong to the family Bethylidae. Some are listed here: