﻿34 
  

  

  DECIDUOUS 
  FEUIT 
  INSECTS 
  AND 
  INSECTICIDES. 
  

  

  Table 
  V. 
  — 
  Time 
  of 
  cocooning 
  and 
  the 
  length 
  of 
  the 
  pupal 
  stage 
  of 
  the 
  first 
  brood 
  of 
  the 
  

   grape-berry 
  moth 
  at 
  North 
  East 
  Pa., 
  in 
  1909. 
  

  

  Number 
  of 
  

   larvae. 
  

  

  Larvae 
  

   left 
  

   fruit. 
  

  

  Moths 
  

   emerged. 
  

  

  Days 
  — 
  

  

  

  

  Larvae 
  

   left 
  

   fruit. 
  

  

  Moths 
  

   emerged. 
  

  

  Days— 
  

  

  In 
  co- 
  

   coon. 
  

  

  Total. 
  

  

  larvae. 
  

  

  In 
  co- 
  

   coon. 
  

  

  Total. 
  

  

  3 
  

  

  July 
  29 
  

  

  ...do 
  

  

  ...do.... 
  

   ...do.... 
  

   July 
  30 
  

  

  ...do 
  

  

  ...do.... 
  

   ...do.... 
  

   ...do.... 
  

   ...do.... 
  

   ...do.... 
  

   July 
  31 
  

   ...do 
  

  

  Aug. 
  10 
  

   Aug. 
  14 
  

   Aug. 
  13 
  

   Aug. 
  23 
  

   Aug. 
  9 
  

   Aug. 
  10 
  

   Aug. 
  12 
  

   Aug. 
  13 
  

   Aug. 
  14 
  

   Aug. 
  15 
  

   Aug. 
  16 
  

   Aug. 
  14 
  

   Aug. 
  15 
  

   Aug. 
  16 
  

   Aug. 
  15 
  

   Aug. 
  16 
  

   Aug. 
  15 
  

   Aug. 
  16 
  

   Aug. 
  17 
  

   Aug. 
  13 
  

   Aug. 
  16 
  

   Aug. 
  17 
  

   Aug. 
  18 
  

   Aug. 
  19 
  

   Aug. 
  17 
  

   Aug. 
  18 
  

   Aug. 
  19 
  

   Aug. 
  20 
  

   Aug. 
  19 
  

   Aug. 
  20 
  

   Aug. 
  22 
  

   Aug. 
  19 
  

   Aug. 
  20 
  

   Aug. 
  22 
  

  

  12 
  

   16 
  

   15 
  

   25 
  

   10 
  

   11 
  

   13 
  

   14 
  

   15 
  

   16 
  

   17 
  

   14 
  

   15 
  

   16 
  

   14 
  

   15 
  

   13 
  

   14 
  

   15 
  

   10 
  

   13 
  

   14 
  

   15 
  

   16 
  

   13 
  

   14 
  

   15 
  

   16 
  

   14 
  

   15 
  

   17 
  

   13 
  

   14 
  

   16 
  

  

  36 
  

  

  112 
  

  

  30 
  

  

  25 
  

  

  10 
  

  

  22 
  

  

  13 
  

  

  56 
  

  

  135 
  

  

  32 
  

  

  17 
  

  

  112 
  

  

  60 
  

  

  16 
  

  

  196 
  

  

  135 
  

  

  39 
  

  

  112 
  

  

  30 
  

  

  10 
  

  

  26 
  

  

  182 
  

  

  75 
  

  

  48 
  

  

  26 
  

  

  42 
  

  

  30 
  

  

  32 
  

  

  56 
  

  

  75 
  

  

  51 
  

  

  247 
  

  

  266 
  

  

  64 
  

  

  3 
  

  

  Aug. 
  6 
  

  

  Aug. 
  7 
  

   ...do.... 
  

   ...do.... 
  

   ...do.... 
  

   ...do.... 
  

   ...do.... 
  

  

  Aug. 
  8 
  

   ...do.... 
  

   ...do.... 
  

  

  ...do 
  

  

  ...do 
  

  

  Aug. 
  9 
  

  

  ...do 
  

  

  ...do 
  

  

  ...do 
  

  

  Aug. 
  10 
  

  

  ...do 
  

  

  ...do.... 
  

   ...do.... 
  

   ...do.... 
  

  

  Aug. 
  11 
  

   ...do.... 
  

   ...do.... 
  

   ...do.... 
  

   ...do.... 
  

   ...do.... 
  

  

  Aug. 
  12 
  

  

  ...do 
  

  

  ...do 
  

  

  ...do 
  

  

  Aug, 
  24 
  

   Aug. 
  20 
  

   Aug. 
  21 
  

   Aug. 
  22 
  

   Aug. 
  23 
  

   Aug. 
  24 
  

   Aug. 
  27 
  

   Aug. 
  23 
  

   Aug. 
  24 
  

   Aug. 
  25 
  

   Aug. 
  26 
  

   Aug. 
  27 
  

   Aug. 
  22 
  

   Aug. 
  25 
  

   Aug. 
  26 
  

   Aug. 
  27 
  

   Aug. 
  22 
  

   Aug. 
  26 
  

   Aug. 
  27 
  

   Aug. 
  28 
  

   Aug. 
  29 
  

   Aug. 
  22 
  

   Aug. 
  25 
  

   Aug. 
  26 
  

   Aug. 
  27 
  

   Aug. 
  28 
  

   Aug. 
  29 
  

   Aug. 
  27 
  

   Aug. 
  28 
  

   Aug. 
  29 
  

   Sept. 
  1 
  

  

  18 
  

   13 
  

   14 
  

   15 
  

   16 
  

   17 
  

   20 
  

   15 
  

   16 
  

   17 
  

   18 
  

   19 
  

   13 
  

   16 
  

   17 
  

   18 
  

   12 
  

   16 
  

   17 
  

   18 
  

   19 
  

   11 
  

   14 
  

   15 
  

   16 
  

   17 
  

   18 
  

   15 
  

   16 
  

   17 
  

   20 
  

  

  54 
  

   26 
  

   14 
  

  

  105. 
  

   16 
  

  

  102 
  

   20 
  

   15 
  

   96 
  

  

  289 
  

   36 
  

   19 
  

   13 
  

   80 
  

  

  204 
  

   36 
  

   12 
  

  

  160 
  

  

  153 
  

  

  144 
  

   19 
  

   11 
  

   14 
  

   30 
  

   64 
  

   17- 
  

   18 
  

   30 
  

   48 
  

   51 
  

   20 
  

  

  7 
  

  

  2 
  

  

  1 
  

  

  1 
  

  

  2. 
  

   1. 
  

   7. 
  

   1. 
  

   6. 
  

   1. 
  

   1. 
  

   6. 
  

   17 
  

   2. 
  

   1. 
  

   1. 
  

   5. 
  

   12 
  

   2. 
  

   1. 
  

   10 
  

   9. 
  

   8. 
  

   1. 
  

   1. 
  

   1. 
  

   2. 
  

   4. 
  

   1. 
  

   1. 
  

   2. 
  

   3. 
  

   3. 
  

   1. 
  

  

  :::::::: 
  

  

  2 
  

  

  1 
  

  

  4 
  

  

  9 
  

  

  2 
  

  

  1 
  

  

  8 
  

  

  4 
  

  

  1 
  

  

  14 
  

  

  9 
  

  

  3 
  

  

  ...do 
  

  

  Aug. 
  1 
  

  

  ...do 
  

  

  Aug. 
  2 
  

  

  ...do 
  

  

  ...do 
  

  

  Aug. 
  3 
  

  

  ...do 
  

  

  ...do.... 
  

   ...do.... 
  

   ...do 
  

  

  8 
  

  

  2 
  

  

  1 
  

  

  2 
  

  

  13 
  

  

  5 
  

  

  3 
  

  

  2 
  

  

  Aug. 
  4 
  

  

  ...do 
  

  

  ...do.... 
  

   ...do 
  

  

  3 
  

  

  2 
  

  

  2 
  

  

  4.. 
  

  

  Aug. 
  5 
  

  

  ...do 
  

  

  ...do 
  

  

  Aug. 
  6 
  

  

  ...do 
  

  

  do 
  . 
  

  

  5 
  

  

  3 
  

  

  19 
  

  

  19 
  

  

  4 
  

  

  285 
  

  

  4,334 
  

  

  

  

  

  

  Average 
  

  

  Days. 
  

   15.2 
  

  

  

  Minimum 
  

  

  10 
  

  

  Time 
  of 
  emergence 
  of 
  first-brood 
  moths. 
  — 
  The 
  material 
  for 
  securing 
  

   this 
  emergence 
  record 
  of 
  the 
  first-brood 
  moths 
  was 
  taken 
  in 
  part 
  from 
  

   the 
  large 
  rearing 
  cage 
  in 
  which 
  the 
  eggs 
  had 
  been 
  deposited 
  by 
  earliest 
  

   emerging 
  moths 
  in 
  the 
  spring. 
  Infested 
  grape 
  berries 
  were 
  removed 
  

   from 
  the 
  vine 
  in 
  this 
  cage 
  a 
  short 
  time 
  before 
  the 
  larvae 
  had 
  reached 
  

   their 
  full 
  growth. 
  The 
  rest 
  of 
  the 
  material 
  was 
  collected 
  from 
  the 
  

   open 
  vineyard 
  on 
  August 
  2, 
  9, 
  and 
  10. 
  Since 
  larvae 
  were 
  found 
  in 
  

   webbed 
  clusters 
  in 
  the 
  open 
  vineyard 
  several 
  days 
  before 
  any 
  larvae 
  

   were 
  found 
  in 
  the 
  rearing 
  cage 
  it 
  is 
  probable 
  that 
  a 
  few 
  of 
  the 
  earliest 
  

   full-grown 
  larvae 
  of 
  the 
  first 
  brood 
  had 
  escaped 
  from 
  the 
  fruit 
  before 
  

   it 
  was 
  collected 
  to 
  secure 
  this 
  record, 
  thus 
  making 
  the 
  date 
  of 
  the 
  

   first-emerging 
  moth 
  in 
  this 
  record 
  a 
  few 
  days 
  later 
  than 
  actually 
  

   occurred 
  under 
  field 
  conditions. 
  Since 
  the 
  date 
  of 
  the 
  last 
  moth 
  of 
  

   the 
  spring 
  brood 
  to 
  emerge 
  in 
  our 
  rearing 
  jars 
  was 
  August 
  4, 
  and 
  the 
  

   date 
  of 
  the 
  first 
  moth 
  to 
  appear 
  from 
  the 
  first-brood 
  rearing 
  material 
  

   was 
  July 
  31, 
  there 
  is 
  evidently 
  an 
  overlapping 
  in 
  the 
  emergence 
  of 
  

  

  