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

William Shepherd; Michael Montgomery; Brian Sullivan; Albert (Bud) III.Mayfield

doi:10.4039/tce.2014.11

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

Informally Refereed

Authors:	William Shepherd, Michael Montgomery, Brian Sullivan, Albert (Bud) III.Mayfield
Year:	2014
Type:	Scientific Journal
Station:	Southern Research Station
DOI:	https://doi.org/10.4039/tce.2014.11
Source:	Canadian Entomologist 146: 693-696.

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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%).

Keywords

Laricobius nigrinus, Coleoptera, Derodontidae

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 -Pinene, Monochamol and Ipsenol in North America. Journal of Economic Entomology. 109 (3): 1205-1214.