The Canadian Entomologist (2014) 146, 693-696

William P. Shepherd, Michael E. Montgomery, Brian T. Sullivan and Albert E. Mayfield (2014)
Novel method for determining sex of live adult Laricobius nigrinus (Coleoptera: Derodontidae)
The Canadian Entomologist 146 (6), 693-696
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%).
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Michael E. Montgomery, Brian T. Sullivan, Albert E. Mayfield

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
Laricobius nigrinus (predator)