Published online by Cambridge University Press: 12 June 2017
The following species of arthropods were exported from California to the U.S.S.R. for the biological control of ragweed (Ambrosia spp.): Tarachidia candefacta Hübner (Lepidoptera: Noctuidae); Coleophora sp. near annulatella Braun (Lepidoptera: Coleophoridae); and Eriophyes boycei Keifer (Acarina: Eriophyidae). Tarachidia candefacta represents the first insect species intentionally introduced from North America into Europe and established for biological weed control.
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