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CISR: German Yellowjacket


CISR: German Yellowjacket

Wednesday, October 21st, 2009

The Situation: In southern California, the most widespread yellowjacket has historically been the native, western yellowjacket, Vespula pensylvanica. The German yellowjacket, V. germanica, became established in the Northeastern U.S. in the 1970s and then the Pacific Northwest in the 1980s where it spread down the coast. It reached southern California in 1991 becoming part of […]


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