Diadegma (genus - parasitoids)

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Diadegma semiclausum - mating pair (click on image to enlarge it)
Author(s): Merle Shepard, Gerald R.Carner, and P.A.C Ooi, Insects and their Natural Enemies Associated with Vegetables and Soybean in Southeast Asia
Source: IPM Images

Diadegma Förster, 1869

This genus of parasitoid wasps contains around 200 species and has a wide distribution. The adults are less than 10 mm long and mostly black. The host insects are lepidopteran larvae.

Some species are specialized on one family whereas others have a wide host range. Important biological control agents of pests are for example Diadegma semiclausum or Diadegma insulare. D. semiclausum has been released into a number of countries against the diamondback moth, Plutella xylostella. In fact six of the species listed below parasitize P. xylostella.


Currently, the following species have been entered into the system: