is a large of minute with over 3,000 described in approximately 176 . Members are exclusively parasitoids of , including those of insects and spiders. They range from 0.5–10 mm in body length and are frequently black with highly sculptured . The family has been subject to taxonomic revision, having been treated historically as a of Platygastridae before being reinstated as a distinct family in recent classifications of Platygastroidea.

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Distribution

. Documented from New Zealand, Chile, Brazil, North America, and Europe. Some exhibit austral disjunct distributions consistent with Gondwanan relict status.

Sources and further reading