Small Holarctic subfamily, all are probably endoparasites of adult ants (Formicidae). Rarely collected.
Drawings:
Elasmosoma berolinense 1, Elasmosoma berolinense Ruthe, female, but left and middle fore tarsus of male.
Neoneurus auctus 5, Neoneurus auctus (Thomson), female, but left detail of fore spur of male.
See for additional illustrations the Multimedia field.