﻿THE 
  GRAPE-BERRY 
  MOTH, 
  

  

  35 
  

  

  moths 
  of 
  the 
  two 
  broods 
  in 
  the 
  field. 
  Table 
  VI 
  contains 
  a 
  record 
  

   of 
  the 
  emergence 
  of 
  403 
  moths, 
  and 
  a 
  glance 
  at 
  the 
  table 
  will 
  show 
  that 
  

   the 
  maximum 
  number 
  of 
  these 
  first-brood 
  moths 
  emerged 
  from 
  

   August 
  14 
  to 
  August 
  29. 
  The 
  rate 
  of 
  emergence 
  is 
  graphically 
  

   shown 
  by 
  the 
  curve 
  in 
  figure 
  11. 
  

  

  Table 
  VI. 
  

  

  Time 
  of 
  emergence 
  of 
  moths 
  of 
  the 
  first 
  brood 
  (summer 
  moths) 
  of 
  the 
  grape- 
  

   berry 
  moth 
  at 
  North 
  East, 
  Pa., 
  %n 
  1909. 
  

  

  Date 
  of 
  

   emer- 
  

   gence. 
  

  

  Num- 
  

   ber 
  of 
  

   moths. 
  

  

  Date 
  of 
  

   emer- 
  

   gence. 
  

  

  Num- 
  

   ber 
  of 
  

   moths. 
  

  

  Date 
  of 
  

   emer- 
  

   gence. 
  

  

  Num- 
  

   ber 
  of 
  

   moths. 
  

  

  Date 
  of 
  

   emer- 
  

   gence. 
  

  

  Num- 
  

   ber 
  of 
  

   moths. 
  

  

  July 
  31 
  

   Aug. 
  9 
  

   10 
  

   11 
  

   12 
  

   13 
  

   14 
  

   15 
  

   16 
  

   17 
  

   18 
  

  

  1 
  

   1 
  

   5 
  

   

   9 
  

   7 
  

  

  18 
  

   28 
  

   24 
  

   18 
  

   10 
  

  

  Aug. 
  19 
  

   20 
  

   21 
  

   22 
  

   23 
  

   24 
  

   25 
  

   26 
  

   27 
  

   28 
  

   29 
  

  

  34 
  

   32 
  

  

  1 
  

   17 
  

  

  7 
  

   19 
  

   23 
  

   27 
  

   23 
  

   27 
  

   18 
  

  

  Aug. 
  30 
  

   31 
  

   Sept. 
  1 
  

   2 
  

   3 
  

   4 
  

   5 
  

   6 
  

   7 
  

   8 
  

   9 
  

  

  5 
  

  

  13 
  

  

  4 
  

  

  9 
  

  

  7 
  

   4 
  

   

   4 
  

   2 
  

   1 
  

   1 
  

  

  Sept. 
  10 
  

   11 
  

   12 
  

   13 
  

   14 
  

   15 
  

  

  1 
  

   

   1 
  

   3 
  

   

   

  

  Total 
  . 
  . 
  

  

  403 
  

  

  Oviposition 
  of 
  first-brood 
  moths. 
  — 
  The 
  oviposit 
  ion 
  records 
  of 
  only 
  a 
  

   few 
  moths 
  of 
  the 
  first 
  brood 
  were 
  secured 
  and 
  are 
  not 
  numerous 
  

   enough 
  to 
  give 
  an 
  adequate 
  idea 
  of 
  the 
  length 
  of 
  this 
  period. 
  The 
  

  

  Fig. 
  11.— 
  Diagram 
  showing 
  time 
  of 
  emergence 
  of 
  the 
  first-brood 
  moths 
  of 
  the 
  grape-berry 
  moth 
  in 
  1909, 
  at 
  

  

  North 
  East, 
  Pa, 
  (Original.) 
  

  

  same 
  difficulty 
  in 
  getting 
  the 
  moths 
  to 
  oviposit 
  freely 
  in 
  confinement 
  

   was 
  encountered 
  as 
  with 
  the 
  spring-emerging 
  moths. 
  Table 
  VII 
  

   gives 
  the 
  ovipositioD 
  of 
  a 
  few 
  individuals 
  of 
  the 
  first 
  brood. 
  

  

  