On the Chalcidoid Parasites of Psyllids (Hemiptera, Homoptera)

While engaged in working out some small lots of Psyllid parasites from various parts of the world, I have found it necessary to examine, as far as possible, the records of Chalcids which up to the present have been bred from these hosts. The literature has proved to be more extensive than had been anticipated, and it has therefore seemed well to bring together and list these scattered references when describing the forms that have been considered as new.