Virginia pines in Patrick Co., Virginia were mechanically damaged to test primary attraction. The following species were trapped in greatest number: Pityogenes plagiatus, Ips avulsus, I. grandicollis, Hylastes porculus, Monochamus carolinensis, Cossonus corticola , and Hylobius pales . Traps placed at treated trees caught over 99% of all insects trapped. Evidence is presented regarding non-random flight and characteristics of the primary host attractant are hypothesized.
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Hines et al. (1977) studied this question.
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