Bowers, W. W., and J. H. Borden. 1990. Evidence for a male-produced aggregation pheromone in the four-eyed spruce bark beetle, Polygraphus rufipennis (Kirby) (Col, Scolytidae) . Journal of Applied Entomology 111:292-299.
Bowers & Borden 1990
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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