Lethal and sublethal effects of selected insecticides - On Geocoris punctipes

Adults of the big-eyed bug, Geocoris punctipes (Say), from a laboratory cul ture, were exposed to selected insecticides and insect growth regulators (I GR's) using a foliar insecticide residue bioassay. Methoxyfenozide, tebufen ozide, and spinosad were not toxic to male and female G. punctipes at the r ecommended rates, while chlorfenapyr produced only partial mortality. At re commended rates, tebufenozide and chlorfenapyr significantly reduced the fe cundity of G. punctipes compared with a control. Most of the chemicals test ed had no effect on host egg consumption of G. punctipes, whereas a recomme nded rate of chlorfenapyr increased egg consumption. Tebufenozide, methoxyf enozide, and chlorfenapyr appear very good for inclusion in IPM in cotton w hile chlorfenapyr seems fairly good.