Some Recent Parasite Introductions in Hawaii

Abstract

Among parasites recently introduced in Hawaii, three species have become established and have brought about a fairly satisfactory control of the rice borer, Chilo Simplex. These parasites are: Trichogramma japonicum, an egg-parasite; Amyosoma Chilonis and Dioctes chilonis, larval parasites. An undetermined hemerobiid has been introduced as an enemy of the pineapple mealybug. An undetermined chalcid-fly is parasitic on another mealybug. A new species of Anagyrus is parasitic on the pink sugar cane mealybug. Two species of Pullus have been introduced as predators on the pink mealybug, but not yet known to be established. Two new species of Scelio, parasitic on eggs of the Chinese grasshopper, have been introduced, but not yet known whether established.