Spalangiinae, Erotolepsiinae Spalangiidae is a family of chalcid wasps that are parasitoids of flies.

[1] They are now known to be more closely related to the planidial clade (Eucharitidae + Perilampidae + Chrysolampidae + Eutrichosomatidae) of chalcid wasps than to the core Pteromalidae.

[2] Antenna usually with 8 flagellomeres, including a single-segment clava; antennal toruli (bases) are placed very low on the head in most species; mandibles usually with 2 or 3 teeth; all legs with 5 tarsomeres; protibial spur stout and curved.

Eunotopsia differs from the other genera in having 11 flagellomeres including 3 clavomeres, toruli placed higher on the head, and having undivided mandibles.

In the Spalangiinae the toruli are placed on lobes that overhang the clypeus and labrum.