Laboratory evaluation of <i>Geocoris bullatus</i> and <i>Nabis alternatus</i> as predators of <i>Lygus</i>


  • George Tamaki Yakima Agricultural Research Laboratory Agric. Res. Serv. Yakima, WA
  • D. P. Olsen Yakima Agricultural Research Laboratory Agric. Res. Serv. Yakima, WA
  • R. K. Gupta Dept of Entomology Washington State University Pullman, WA


<i>Geocoris bullatus</i>, <i>Nabis alternatus</i>, <i>Lygus</i>, biological control


Adults of <i>Geocoris bullatus</i> were not effective predators against late nymphs and adults of <i>Lygus</i>, but adults of <i>Nabis alternatus</i> were effective against these stages. Both predators were effective against the young <i>Lygus</i> nymphs. Males of <i>N. alternatus</i> were almost as successful as females against small prey but were less effective against the late-stage <i>Lygus</i>.


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