﻿CONTENTS. 
  

  

  Page. 
  

  

  Introduction 
  73 
  

  

  Seasonal 
  history 
  and 
  habits 
  74 
  

  

  The 
  adult 
  74 
  

  

  The 
  egg 
  76 
  

  

  The 
  larva 
  77 
  

  

  Natural 
  enemies 
  78 
  

  

  Experiments 
  in 
  control 
  79 
  

  

  ILLUSTRATIONS. 
  

  

  PLATES. 
  

  

  Page. 
  

   Plate 
  IX. 
  Fig. 
  1. 
  — 
  Cherries 
  injured 
  by 
  the 
  cherry 
  fruit 
  sawfly 
  (Hoplocampa 
  

   cookei). 
  Fig. 
  2. 
  — 
  Entrance 
  and 
  exit 
  holes 
  of 
  the 
  cherry 
  fruit 
  

   sawfly 
  76 
  

  

  X. 
  Fig. 
  1. 
  — 
  Cherry 
  blossom 
  clusters 
  at 
  stage 
  of 
  development 
  when 
  

   most 
  of 
  the 
  eggs 
  of 
  the 
  cherry 
  fruit 
  sawfly 
  are 
  being 
  deposited. 
  

   Fig. 
  2. 
  — 
  Larvae 
  and 
  cocoons 
  of 
  the 
  cherry 
  fruit 
  sawfly 
  76 
  

  

  TEXT 
  FIGURES. 
  

  

  Fig. 
  23. 
  The 
  cherry 
  fruit 
  sawfly 
  (Hoplocampa 
  cookei): 
  Egg, 
  larvae, 
  adult 
  and 
  

  

  details, 
  work 
  75 
  

  

  24. 
  Microbracon 
  sp., 
  a 
  hymenopterous 
  parasite 
  of 
  the 
  cherry 
  fruit 
  sawfly. 
  . 
  78 
  

  

  in 
  

  

  