Hylurgops palliatus (Gyllenhal) Screening Aid
(Subfamily Hylesininae, Tribe Hylastini)
From: Cavey, J., Passoa, S. and Kucera D. 1994, Screening Aids for Exotic Bark Beetles in the Northeastern United States. NA-TP-11-94. Northeastern Area: U.S. Department of Agriculture, Forest Service.
General Appearance in a Sample. Hylurgops palliatus (Fig. 3) superficially resembles other scolytids in the subfamily Hylesininae. Some of the more obvious characters are:
Recognizing the Genus. Some members of the genus Hylurgops are difficult to distinguish from Hylastes (Wood 1982, Bright 1976). Fortunately, only one species of Hylurgops is known to occur in the eastern U.S., H. rugipennis pinifex (Fitch). This species and H. palliatus are clearly distinct from Hylastes in all or most of the characters presented in couplet 5 of the key, below.
Recognizing H. palliatus. Characters for separating H. palliatus from scolytids known from the northeastern U.S. are assembled in the following key. Because the recommended lure, alpha-pinene, will attract many bark beetles, screening personnel should obtain a specimen of the target pest to help preclude unnecessary, repetitive use of the key.
Key to Help Screen Hylurgops palliatus (Gyllenhal)
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