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    Author(s): Wenhua Lu; Michael E. Montgomery
    Date: 2000
    Source: In: McManus, Katherine A.; Shields, Kathleen S.; Souto, Dennis R., eds. Proceedings: Symposium on sustainable management of hemlock ecosystems in eastern North America. Gen. Tech. Rep. NE-267. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station: 188.
    Publication Series: General Technical Report (GTR)
    Station: Northeastern Research Station
    PDF: View PDF  (83.56 KB)

    Description

    Scymnus (Neopullus) sinuanodulus Yu et Yao, S. (N.) camptodromusYu et Liu, and Scymnus (Neopullus) n. sp. (in press) were collected in the People's Republic of China from hemlocks infested with the hemlock woolly adelgid, Adelges tsugae Annand. To date, 3 of the 14 provinces in China where hemlock occurs naturally have been surveyed; S. sinuanodulus was found in Yunnan, Scymnus n. sp. was found in Shaanxi, and S. camptodromus was found in Yunnan and Sichuan. The three lady beetles were imported from 1996 to 1998 to the USDA Forest Service Quarantine Laboratory in Ansonia, Connecticut, for evaluation as biological controls of A. tsugae. This report discusses the development, oviposition, and feeding behavior of the three species.

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    Citation

    Lu, Wenhua; Montgomery, Michael E. 2000. Comparative biology of three Scymnus lady beetles (Coleoptera: Coccinellidae): predators of Adelges tsugae (Homoptera: Adelgidae). In: McManus, Katherine A.; Shields, Kathleen S.; Souto, Dennis R., eds. Proceedings: Symposium on sustainable management of hemlock ecosystems in eastern North America. Gen. Tech. Rep. NE-267. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station: 188.

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