﻿CONTENTS. 
  

  

  Page. 
  

  

  Introduction 
  7 
  

  

  Nature 
  and 
  extent 
  of 
  injury 
  8 
  

  

  Description 
  8 
  

  

  The 
  adult 
  female 
  9 
  

  

  The 
  adult 
  male 
  JO 
  

  

  Recently 
  emerged 
  adults 
  10 
  

  

  The 
  egg 
  10 
  

  

  The 
  first-stage 
  larva 
  10 
  

  

  The 
  second-stage 
  larva 
  11 
  

  

  The 
  young 
  nymph 
  or 
  prepupa 
  12 
  

  

  The 
  full-grown 
  nymph 
  or 
  pupa 
  13 
  

  

  Origin 
  and 
  distribution 
  14 
  

  

  History 
  16 
  

  

  Recent 
  records 
  . 
  16 
  

  

  Habits 
  of 
  the 
  adult 
  17 
  

  

  Method 
  of 
  mating 
  17 
  

  

  Method 
  and 
  time 
  of 
  oviposition 
  18 
  

  

  Number 
  of 
  eggs 
  and 
  period 
  of 
  oviposition 
  19 
  

  

  Proportion 
  of 
  the 
  sexes 
  20 
  

  

  Kinds 
  of 
  reproduction 
  20 
  

  

  Feeding 
  habits 
  20 
  

  

  Flight 
  21 
  

  

  Leaping 
  22 
  

  

  Normal 
  length 
  of 
  life 
  x 
  22 
  

  

  Length 
  of 
  life 
  in 
  winter 
  22 
  

  

  Habits 
  of 
  the 
  larva 
  23 
  

  

  Hatching 
  23 
  

  

  Molting 
  25 
  

  

  Habits 
  of 
  the 
  prepupa 
  and 
  pupa 
  26 
  

  

  Food 
  plants 
  27 
  

  

  Beans 
  27 
  

  

  Other 
  vegetables 
  28 
  

  

  Pear 
  28 
  

  

  Alfalfa 
  28 
  

  

  Cotton 
  30 
  

  

  Wild 
  plants 
  30 
  

  

  Seasonal 
  history 
  at 
  Compton, 
  Cal 
  31 
  

  

  The 
  egg 
  31 
  

  

  The 
  larva 
  32 
  

  

  The 
  prepupa 
  and 
  pupa 
  

  

  Total 
  life 
  cycle 
  

  

  Emergence 
  from 
  hibernation 
  36 
  

  

  Entrance 
  into 
  hibernation 
  36 
  

  

  Number 
  of 
  generations 
  37 
  

  

  5 
  

  

  