Abstract
The abilities of eugenol and Japonilure [(R, Z)-5-(I-decenyl)dihydro-2(3H)-furanone], the female sex pheromone, to enhance the attractancy of various lures for the Japanese beetle. Popillia japonica Newman. were determined. The attraction of beetles to phenethyl propionate (PEP), the most common component of recent food-type lures was enhanced much more by eugenol (2- to 3-fold more) than it was by Japonilure. PEP was the only lure to be so enhanced. Among other lures, the attractancies of anethole, citronellol, geraniol. geranyl acetate, and phenethyl butyrate were much more enhanced by Japonilure than by eugenol. The attractancies of caproic acid. heptyl 2-methylbutyrate, and methyl cyclohexanepropionate were enhanced to a comparable degree by either eugenol or Japanilure.
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