Megaspilidae
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Megaspilidae is a small Hymenopteran family with 12 genera in two subfamilies, and some 450 known species, with a great many species still undescribed. It is a poorly-known group as a whole, though most are believed to be parasitoids (esp. of Sternorrhynchan Hemiptera), and a few hyperparasitoids. Many are found in the soil, and of these, a number are wingless.
The family is distinguished from the closely-related Ceraphronidae by having a very large stigma in the wing, a relatively constricted metasomal petiole, and 3 grooves in the mesoscutum.
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