Response of the fall armyworm and other lepidopterous pests of Bolivia to synthetic pheromones.
Pheromones for Spodoptera frugiperda (J. E. Smith), Trichoplusia ni (Hb.), Pseudoplusia includens (Wlk.), Pectinophora gossypiella (Saund.) and Keiferia lycopersicella (Wlsm.) were tested in the field near Santa Cruz in Bolivia in February 1978. Males of S. frugiperda were attracted equally to traps containing living females and to traps containing (Z)-9-dodecenyl acetate (which had been identified in the USA as the pheromone for this species) dispensed from polyethylene vials in a maize field. Positive responses are also briefly recorded for P. gossypiella to gossyplure (a mixture of equal parts of (7Z,11Z)-7, 11-hexadecadienyl acetate and (7Z,11E)-7, 11-hexadecadienyl acetate) in various kinds of dispensers in a cotton field; for Pseudoplusia includens and T. ni to looplure in plastic vials in a soyabean field; and for K. lycopersicella to a sex attractant of unstated composition dispensed from rubber septa in traps in a tomato field.