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    Author(s): Richard McDonald; David Mausel; Scott Salom; Loke Kok; Michael Montgomery; Gina Luker; Stan Steury; Gene Spears; Stewart Skeate; James Graham; Byron Hamstead.
    Date: 2008
    Source: In: Onken, Brad; Reardon, Richard, comps. Fourth Symposium on hemlock woolly adelgid in the eastern United States; 2008 February 12-14; Hartford, CT. FHTET 2008-01. Morgantown, WV: U.S. Forest Service, Forest Health Technology Enterprise Team: 53-60.
    Publication Series: Other
    Station: Northern Research Station
    PDF: View PDF  (1.42 MB)

    Description

    Three species of predatory beetles have been released to combat infestations of the hemlock woolly adelgid in the High Country region of northwestern North Carolina. They are the spring/summer predators Sasajiscymnus tsugae Sasaji (St), Scymnus sinuanodulus Yu and Yao (Ss), and the winter/fall predator Laricobius nigrinus Fender (Ln). A total of 890 adults of St have been released at three sites and adults were recovered from two of the three sites; one site was two years old. We also recovered St from a site where no releases were made by this group (Lees McRae Field Site).

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    Citation

    McDonald, Richard; Mausel, David; Salom, Scott; Kok, Loke; Montgomery, Michael; Luker, Gina; Steury, Stan; Spears, Gene; Skeate, Stewart; Graham, James; Hamstead, Byron. 2008. Recovery of hemlock woolly adelgid predators in the high country of northwestern North Carolina, 2004-2008. In: Onken, Brad; Reardon, Richard, comps. Fourth Symposium on hemlock woolly adelgid in the eastern United States; 2008 February 12-14; Hartford, CT. FHTET 2008-01. Morgantown, WV: U.S. Forest Service, Forest Health Technology Enterprise Team: 53-60.

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