Abstract
The ability of nymphal and adult Geocoris punctipes (Say) to successfully attack and kill Heliothis virescens (F.) larvae of different sizes was evaluated. Successful predation or prey consumption decreased as larval size increased, while consumption increased with predator age. First-, 2nd- and 3rd-instar predator nymphs fed on newly hatched, mid, and late 1st-instar H. virescens larvae, respectively; 4th- and 5th-instar nymphs and adult predators were able to feed on 1st- to late 2nd-instar larvae. The defensive actions of the larger larvae in response to predator attack were sufficient to prevent predator feeding in some encounters.
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