What is "leptofoeninae"

The Pteromalid wasp subfamily Leptofoeninae contains the largest known members of the Chalcidoidea. They also, like many of the smaller Pteromalids, are brilliantly metallic.

The subfamily contains only two genera, Doddifoenus (with three species) and Leptofoenus (with five extant species). The recently described Doddifoenus wallacei is the largest known chalcidoid wasp, reaching nearly 5 cm in length (including ovipositor).

The first Leptofoeninae species known from the fossil record, Leptofoenus pittfieldae, was described in 2009 by Dr. Michael Engel from a specimen discovered in Dominican amber.