﻿THE 
  GRAPE-BERRY 
  MOTH, 
  

  

  43 
  

  

  Table 
  XIX 
  gives 
  the 
  emergence 
  record 
  of 
  279 
  moths 
  of 
  the 
  spring 
  

   brood 
  for 
  the 
  season 
  of 
  1908. 
  There 
  is 
  a 
  variation 
  of 
  several 
  days 
  

   in 
  the 
  dates 
  of 
  the 
  maximum 
  emergence 
  of 
  the 
  moths 
  for 
  the 
  three 
  

   seasons, 
  the 
  maximum 
  emergence 
  being 
  nearly 
  a 
  week 
  earlier 
  in 
  

   1908 
  than 
  in 
  1907 
  and 
  1909. 
  In 
  each 
  instance, 
  however, 
  the 
  period 
  

   of 
  maximum 
  emergence 
  of 
  the 
  moths 
  coincided 
  quite 
  closely 
  with 
  

   the 
  period 
  of 
  full 
  bloom 
  of 
  the 
  grape. 
  

  

  Table 
  XIX. 
  — 
  Time 
  of 
  emergence 
  of 
  moths 
  of 
  the 
  grape-berry 
  moth 
  in 
  the 
  spring 
  of 
  1908, 
  

  

  North 
  East, 
  Pa. 
  

  

  Date 
  of 
  

  

  Num- 
  

  

  Date 
  of 
  

  

  Num- 
  

  

  Date 
  of 
  

  

  Num- 
  

  

  Date 
  of 
  

  

  Num- 
  

  

  emer- 
  

  

  ber 
  of 
  

  

  emer- 
  

  

  ber 
  of 
  

  

  emer- 
  

  

  ber 
  of 
  

  

  emer- 
  

  

  ber 
  of 
  

  

  gence. 
  

  

  moths. 
  

  

  gence. 
  

  

  moths. 
  

  

  gence. 
  

  

  moths. 
  

  

  gence. 
  

  

  moths. 
  

  

  June 
  1 
  

  

  6 
  

  

  June 
  19 
  

  

  15 
  

  

  July 
  3 
  

  

  3 
  

  

  July 
  15 
  

  

  1 
  

  

  June 
  7 
  

  

  5 
  

  

  June 
  20 
  

  

  15 
  

  

  July 
  5 
  

  

  1 
  

  

  July 
  16 
  

  

  1 
  

  

  June 
  8 
  

  

  17 
  

  

  June 
  21 
  

  

  1 
  

  

  July 
  6 
  

  

  2 
  

  

  July 
  17 
  

  

  1 
  

  

  June 
  9 
  

  

  7 
  

  

  June 
  22 
  

  

  7 
  

  

  July 
  8 
  

  

  1 
  

  

  July 
  19 
  

  

  1 
  

  

  June 
  10 
  

  

  12 
  

  

  June 
  23 
  

  

  8 
  

  

  July 
  9 
  

  

  1 
  

  

  July 
  20 
  

  

  2 
  

  

  June 
  12 
  

  

  16 
  

  

  June 
  24 
  

  

  9 
  

  

  July 
  10 
  

  

  1 
  

  

  July 
  22 
  

  

  1 
  

  

  June 
  13 
  

  

  30 
  

  

  June 
  25 
  

  

  4 
  

  

  July 
  11 
  

  

  1 
  

  

  July 
  23 
  

  

  2 
  

  

  June 
  15 
  

  

  14 
  

  

  June 
  26 
  

  

  3 
  

  

  July 
  12 
  

  

  1 
  

  

  July 
  25 
  

  

  1 
  

  

  June 
  16 
  

   June 
  17 
  

  

  22 
  

  

  17 
  

  

  June 
  29 
  

   July 
  1 
  

  

  11 
  

  

  1 
  

  

  July 
  13 
  

   July 
  14 
  

  

  1 
  

   4 
  

  

  

  

  Total 
  . 
  

  

  279 
  

  

  June 
  18 
  

  

  33 
  

  

  

  

  

  

  

  

  Figure 
  14 
  gives 
  a 
  graphic 
  description 
  of 
  the 
  rate 
  of 
  emergence 
  of 
  

   the 
  spring 
  brood 
  of 
  moths 
  for 
  1908, 
  showing 
  that 
  the 
  maximum 
  

   number 
  of 
  moths 
  emerged 
  after 
  June 
  13 
  — 
  about 
  the 
  date 
  that 
  grapes 
  

   normally 
  commence 
  to 
  blossom. 
  

  

  Fig. 
  14.— 
  Diagram 
  showing 
  the 
  time 
  of 
  emergence 
  of 
  the 
  spring-brood 
  moths 
  of 
  the 
  grapo-borry 
  moth 
  in 
  

   1 
  90S, 
  at 
  North 
  East, 
  Pa. 
  (Original.) 
  

  

  The 
  first 
  record 
  of 
  oviposition 
  in 
  1908 
  was 
  made 
  of 
  eggs 
  found 
  

   in 
  \ 
  cry 
  small 
  berries 
  in 
  rearing 
  cages 
  June 
  17. 
  No 
  record 
  of 
  the 
  

   egg 
  stage 
  of 
  the 
  first 
  brood 
  was 
  secured, 
  on 
  account 
  of 
  great 
  diffi- 
  

   culty 
  in 
  getting 
  moths 
  to 
  oviposit 
  in 
  confinement. 
  The 
  larval 
  period 
  

  

  