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The rice stink bug, Niphe elongata（Dallas）（Hemiptera: Pentatomidae）, is a serious pest that sucks the contents out of developing rice kernels and causes peck rice. The bug hibernates during the adult stage, and we have identified a hibernating site where dead gramineous grasses grow in a wooded area. This study investigated the time taken for the adult bugs to leave the hibernating site and enter a paddy field. Adults inhabited the hibernation site until early July and left it in mid-July. After leaving the site, the adults entered a paddy field where the rice plants had emerged. Thus, our study revealed when the overwintering adults left the hibernating sites and moved to the paddy fields.
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Torikai et al. (2022) studied this question.
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