Özet:

 Increased knowledge of the world’s largely unknown biodiversity is essential for its preservation, particularly in tropical areas that have been little studied, and there is also a similar great need for information on natural enemies of plant feeding insects that contribute to biological control, and which are essential for sustainable ecosystems. In this study two new species of Diadiplosis from the State of Espírito Santo, Brazil, are described and illustrated: Diadiplosis jamboi sp. n. was collected in association with the scale insects Planococcus halli Ezzat and McConnell, 1956 (Coccoidea: Pseudococcidae) infesting jambo, Syzygium jambos (L.) Alston (Myrtaceae), fruit; and Diadiplosis martinsensis sp. n. was collected in association with scale insects (Pseudococcidae: Pseudococcus) on pineapple, Ananas comosus var. comosus (Bromeliaceae), and scale insects (Coccidae and Pseudococcidae) on coffee, Coffea arabica (Rubiaceae). Little is known about the members of the genus to which Diadiplosis jamboi sp. n. and Diadiplosis martinsensis sp. n. belong, and results of the present study add to much needed knowledge of this ecologically important but little known group of insects which should stimulate greatly required additional research on this and similar species.

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