A NEW SPECIES OF APHELINOIDEA (HYMENOPTERA, TRICHOGRAMMATIDAE), WITH A KEY TO SPECIES OF THE HOLARCTIC REGION

A key to the nine Holarctic species of the trichogrammatid genus Aphel inoidea Girault is given. The taxonomic status of A. plutella Girault is discussed. A. turanica S. Trjapitzin, new species, is described and illustrated. This species of egg parasitoid was imported in 1992 from Turkmenistan (central Asia) into California as an agent for biologica l control of beet leafhopper, Circulifer tenellus (Baker). Quarantine pre-introductory evaluation was followed in 1993 by releases of the in sectary-reared parasitoids in Oildale, California. A brief account of the life history traits of A. turanica as well as preliminary data on its establishment at the release site are included.