Imported french parasite of walnut aphid established in California
California Agriculture 14(11):3-4.
Published November 01, 1960
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Imported from in 1959, a tiny wasp—Trioxys pallidus Haliday—a natural parasitic enemy of the walnut aphid—Chromaphis juglandicola (Kaltenbach)—has become established, at least locally, in California.