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Eric Coombs , Oregon Department of Agriculture, United States

Eggs. Adult. Larva. Eric Coombs , Oregon Department of Agriculture, United States. Bernd Blossey , Cornell University, United States. Galerucella beetles go through 4 stages of life. Egg, Larva, Pupa, and Adult. Adults hibernate over the winter, and begin laying eggs in the spring.

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Eric Coombs , Oregon Department of Agriculture, United States

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  1. Eggs Adult Larva Eric Coombs, Oregon Department of Agriculture, United States Bernd Blossey, Cornell University, United States Galerucella beetles go through 4 stages of life. Egg, Larva, Pupa, and Adult. Adults hibernate over the winter, and begin laying eggs in the spring. Lessoning Loosestrife

  2. Linda Wilson, University of Idaho, Bugwood.org Larva feed on the leaf tips, making a windowpane pattern. Adults eat all the way through the leaf. Lessoning Loosestrife

  3. Bernd Blossey, Cornell University, United States Eggs Adult Larva Eric Coombs, Oregon Department of Agriculture, United States Bernd Blossey, Cornell University, United States A Which leaf shows more damage by Adult Galerucella beetles? Which leaf shows more damage by Galerucella beetle larva? Adult B Larva Lessoning Loosestrife

  4. Chart B: Damage Class A <1% B 1-5% Linda Wilson, University of Idaho, Bugwood.org C 6-25% Doug Landis, Michigan State University, Bugwood.org Jil M. Swearingen, USDI National Park Service, Bugwood.org D 26-50% Estimate Damage Class E 51-75% F 76-95% G >95% Bernd Blossey, Cornell University, United States C: 6-25% OR D: 26-50% D: 26-50% G> 95% D: 26-50% Lessoning Loosestrife

  5. Chart B: Damage Class, % cover A <1% B 1-5% C 6-25% Jil M. Swearingen, USDI National Park Service, Bugwood.org D 26-50% E 51-75% F 76-95% G >95% Bernd Blossey, Cornell University, United States Bernd Blossey, Cornell University, United States Bernd Blossey, Cornell University, United States Imagine this is your quadrate. Estimate damage class F: 76-95% Lessoning Loosestrife

  6. Photo by Linda Wilson, University of Idaho, Bugwood.org Estimate Percent Damage by Larva G > 95%! Based on this image, do you think beetles help control purple loosestrife? Lessoning Loosestrife

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