Abstract
Attractive activity of a 3 : 1 mixture of (Z)-7-dodecenyl acetate (Z7-12 : Ac) and (Z)-9-tetradecenyl acetate (Z9-14 : Ac) for male black cutworm moths, Aqrotis ipsilon HUFNAGEL, was significantly improved by the addition of (Z)-11-hexadecenyl acetate (Z11-16 : Ac) when dispensed from a rubber septum. On the contrary, the addition of Z11-16 : Ac caused a significant decrease of catches when dispensed from a glass capillary tube. The reason was not known. Nevertheless, a rubber septum impregnated with 30 μg of Z7-12 : Ac, 10 μg of Z9-14 : Ac and 150 μg of Z11-16 : Ac was one of the most effective lures for male black cutworm moths. This formulation was effective for 1 month or more after a 10-day pre-exposure.
