Title: Hemlock woolly adelgid and its natural enemies in Yunnan Province, China: first-year (2005) results

Author: Li, Li; Lu, Wenhua; Montgomery, Michael; Van Driesche, Roy; Salom, Scott

Year: 2007

Publication: In: Gottschalk, Kurt W., ed. Proceedings, 17th U.S. Department of Agriculture interagency research forum on gypsy moth and other invasive species 2006; Gen. Tech. Rep. NRS-P-10. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station: 65.

Abstract: Chinese and American institutions formed a partnership in 2005 for the purpose of studying and obtaining natural enemies for biological control of Adelges tsugae Annand, the hemlock woolly adelgid (HWA), in the eastern United States. We report here the first 6 months (June-November) of studies conducted in Yulong (Lijiang) County in Yunnan Province. Previously, Scymnus sinuanodulus, S. camptodromus and S. yunshanpingensis had been collected there for shipment to the United States. There are four study sites between altitudes of 2600 and 3200 meters in transitional forest. Besides the hemlocks, Tsuga dumosa or T. forrestii, spruce, fir, pine, Keteleeria, and Taxus are present along with hardwoods such as oak, birch and poplar.