The genus Diadegma has species that are parasitoids of larvae of diamondback moth, Plutella xylostella, one of the most important pests of Brassicacea. This genus has a worldwide distribution. Representative samples of three Diadegma populations from Brazil, Reunion Island and Malaysia were characterized by RAPD-PCR. No intra-population variability was found. However, the high coefficient of genetic similarity between the populations suggests that they could belong to different species.
Plutella xylostella; natural enemy; biological control; population; molecular marker