Novel method for determining sex of live adult Laricobius nigrinus (Coleoptera: Derodontidae).

Abstract

A method for determining the sex of live adult Laricobius nigrinus Fender (Coleoptera:Derodontidae) is described. Beetles were briefly chilled and positioned ventral-side-up under a dissecting microscope. Two forceps with blunted ends were used to gently brace the beetle and press on the centre of the abdomen to extrude its terminal segments. Male beetles were distinguished by a sclerotised, reticulate ninth abdominal sternite. In females, the distinct ovipositor (tergite, valvifers (ninth sternite), and laterotergites of the ninth abdominal segment) was visible. The procedure was rapid and harmed only a small number of individuals (fewer than 5%).

  • Citation: Miller, D. R., Allison, J. D.; Crowe, C. M.; Dickinson, D. M.; Eglitis, A.; Hofstetter, R. W.; Munson, A. S.; Poland, T.M.; Reid, L. S.; Steed, B. E.; and Sweeney, J. W. 2016. Pine Sawyers (Coleoptera: Cerambycidae) attracted to a-Pinene, Monochamol and Ipsenol in North America. Journal of Economic Entomology. 109 (3): 1205-1214.
  • Keywords: Laricobius nigrinus, Coleoptera, Derodontidae
  • Posted Date: January 5, 2015
  • Modified Date: November 15, 2016
  • Print Publications Are No Longer Available

    In an ongoing effort to be fiscally responsible, the Southern Research Station (SRS) will no longer produce and distribute hard copies of our publications. Many SRS publications are available at cost via the Government Printing Office (GPO). Electronic versions of publications may be downloaded, printed, and distributed.

    Publication Notes

    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
    • Our online publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact the SRS webmaster if you notice any errors which make this publication unusable.
    • To view this article, download the latest version of Adobe Acrobat Reader.