Natural enemies released against the Russian wheat aphid, Diuraphis noxia (Kurdjumov), in Chile

Petr Stary1, Fernando Rodríguez A.2 y Marcos Gerding P.3

Natural anemies were introduced as supplement to reduce the pest population in a Biocontrol Project againstthe cereal aphid pest Diuraphis noxia. During 1991/1992 the following species were introduced through the quarantine facilities at La Cruz National Entomological Center and released in V and VIII Regions: Ephedrus nacher; Quilis, E. plagiator (Nees) and E. cerasicola Stary (Hymenoptera: Aphidiidae) and Leucopis ninae Tanasijtshuk (Diptera: Chamaemyiidae). Sampling showed that initial establishment was positive in some localities.

Keywords: Diuraphis noxia, biological control, natural anemias, releasings.
1 Institute of Entomology, Czech Academy of Scíences, Branisovska 31, 370 05 Ceske Budejovice, Czech Republic.
2 Centro Nacional de Entomologia La Cruz (INIA), Casilla 3. La Cruz, Chile.
3 Estación Experimental Quilamapu (INIA), Casilla 426, Chillán, Chile.