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    Author(s): Carl W. Fatzinger; Gary L. DeBarr
    Date: 1969
    Source: Res. Note SE-101. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southeastern Forest Experiment Station. 4 p.
    Publication Series: Research Note (RN)
    Station: Southeastern Forest Experiment Station
    PDF: View PDF  (444 KB)

    Description

    Trunk attacks by the black turpentine beetle, Dendroctonus terebrans (Oh.), and the larvae of Dioryctria amatella (Hulst) on the southern pines results in a copious flow of pitch. This external pitch mass or pitch tube exhibits characteristics that can be used as symptoms to distinguish between attacks by these two insects.

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    Citation

    Fatzinger, Carl W.; DeBarr, Gary L. 1969. How to Distinguish Attacks by the Black Turpentine Beetle and Dioryctria Amatella on Southern Pines. Res. Note SE-101. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southeastern Forest Experiment Station. 4 p.

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