D. A. George’s research while affiliated with SEA and other places

Cyclohexyl phenylacetate, a lure for male and female checkered flower beetles, Trichodes ornatus Say, impregnated on rubber septa was effective for 6 weeks in the field. Beetle captures in traps baited with septa containing 200–400 mg of the lure were statistically equal. Septum containing 400 mg lure initially will lose ca. 200 mg through evaporation by the 43rd day; thus, two baits suffice for the beetle’s principle flight period which lasts from early June to mid-August in Washington.

A combination of (Z)-11-hexadecenal and (Z)-13-octadecenal is a sex attractant for male Tehama bonifatella Hulst (Lepidoptera: Pyralidae). Neither compound alone produced trap catch. Optimum ratios were from 1:1 to 7:3 (hexadecenal to octadecenal) in natural rubber septa., and optimum dosage was 0.45:0.30 to 4.5:3.0 mg of (Z)-11-hexadecenal:(Z)-13-octadecenal. The strongest electroantennogram (EAG) response was evoked by (Z)-9-tetradecenal followed by (Z)-11-hexadecenal. Addition of (Z)-9-tetradecenal or (Z)-11-hexadecen-1-ol acetate to the two-component lure greatly decreased trap catch. Addition of other EAG active compounds to the two-component lure failed to increase trap catch. Traps baited with the two-component lure caught more males than traps baited with females.