Wasp found in upstate New York shows up in Southern California

In August 2010, an entomologist at the University of California, Riverside discovered a tiny fairyfly wasp in upstate New York that had never been seen in the United States until then. Nearly exactly a year later, he discovered the wasp in Irvine, Calif., strongly suggesting that the wasp is well established in the country. Called Gonatocerus ater, the 1-millimeter-long wasp was accidentally introduced in North America. It lays its eggs inside the eggs of leafhoppers.

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