﻿CONTENTS 
  

  

  Page. 
  

  

  Introduction 
  .' 
  91 
  

  

  History 
  92 
  

  

  Distribution 
  93 
  

  

  Food 
  plants 
  93 
  

  

  Character 
  of 
  injury 
  94 
  

  

  Description 
  of 
  stages 
  96 
  

  

  The 
  adult 
  90 
  

  

  The 
  egg 
  9G 
  

  

  The 
  larva 
  96 
  

  

  The 
  pupa 
  97 
  

  

  Life 
  history 
  and 
  habits 
  97 
  

  

  Larval 
  stage 
  97 
  

  

  Pupal 
  stage 
  98 
  

  

  The 
  adult 
  and 
  egg 
  stages 
  99 
  

  

  Summary 
  of 
  life 
  history 
  101 
  

  

  Hibernation 
  101 
  

  

  Natural 
  enemies 
  102 
  

  

  Methods 
  of 
  control 
  102 
  

  

  Experimental 
  tests 
  for 
  the 
  destruction 
  of 
  the 
  eggs 
  103 
  

  

  Spraying 
  experiments 
  for 
  the 
  destruction 
  of 
  the 
  egg-masses 
  104 
  

  

  Experiments 
  at 
  Espanola, 
  N. 
  Mex 
  104 
  

  

  Experiments 
  at 
  Canon 
  City, 
  Colo 
  105 
  

  

  Spraying 
  experiments 
  against 
  the 
  larvae 
  106 
  

  

  Light 
  traps 
  107 
  

  

  Conclusions 
  108 
  

  

  Recommendations 
  for 
  control 
  109 
  

  

  in 
  

  

  