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    Author(s): William P ShepherdBrian T Sullivan
    Date: 2017
    Source: Journal of Insect Science
    Publication Series: Scientific Journal (JRNL)
    Station: Southern Research Station
    PDF: Download Publication  (208.0 KB)


    Local outbreak risk for the southern pine beetle, Dendroctonus frontalis Zimmermann (Coleoptera: Curculionidae),
    is forecast with a trapping survey conducted every spring throughout the southeastern United States. Traps baited
    with pine odors and components of the D. frontalis aggregation pheromone are used to obtain abundance estimates
    of both this species and its clerid predator Thanasimus dubius (F.) (Coleoptera: Cleridae); these data are entered
    into a predictive model that estimates outbreak risk. An attractant synergist for D. frontalis, endo-brevicomin, has
    recently been included in the survey lure, but it can have the unintended effect of attracting nontarget species
    Hylesinus pruinosus Eichhoff (Coleoptera: Curculionidae: Scolytinae) and Enoclerus nigripes (Say) (Coleoptera:
    Cleridae) which, due to their sometimes large numbers and general similarity in appearance to the target species,
    could complicate sorting and counting of trap catches. Analysis of bycatch data from a previously-published, 31-mo
    trapping study in Mississippi indicated that displacement of the endo-brevicomin releaser 6 m from the trap largely
    eliminated catches of the nontarget species H. pruinosus and E. nigripes while not reducing catches of the target
    species D. frontalis and T. dubius. Our analysis demonstrates that interspecific differences in spatial responses
    to attractive semiochemicals can be used to improve insect trap selectivity. Both nontarget beetle species were
    captured in highest numbers during late winter/early spring, coinciding with the D. frontalis survey.

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    Shepherd, William P; Sullivan, Brian T. 2017. Spatial displacement of a lure component can reduce catches of two nontarget species during spring monitoring of southern pine beetle. Journal of Insect Science. 18(1): 1-4. 4 p.


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    Hylesinus pruinosus, Enoclerus nigripes, Dendroctonus frontalis, Thanasimus dubius, bycatch

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