﻿42 
  

  

  DECIDUOUS 
  FKUIT 
  INSECTS 
  AND 
  INSECTICIDES. 
  

  

  Figure 
  13 
  gives 
  a 
  graphic 
  representation 
  of 
  the 
  rate 
  of 
  emergence 
  

   of 
  the 
  moths 
  of 
  the 
  first 
  brood 
  for 
  the 
  season 
  of 
  1907. 
  

  

  The 
  most 
  extensive 
  record 
  of 
  the 
  egg 
  stage 
  of 
  the 
  second 
  brood 
  

   was 
  secured 
  in 
  the 
  season 
  of 
  1907. 
  Table 
  XVIII 
  gives 
  the 
  length 
  

   of 
  this 
  stage 
  for 
  35 
  eggs, 
  which 
  shows 
  an 
  average 
  of 
  6.5 
  days, 
  the 
  

  

  105 
  

  

  

  

  90 
  

  

  

  

  £ 
  bo 
  

   %■ 
  

  

  £30 
  

   3 
  

  

  

  

  

  

  

  

  

  

  z. 
  

  

  »5 
  

  

  

  

  

  

  

  

  

  

  17 
  ZO 
  23 
  Zb 
  Z<\ 
  1 
  4- 
  7 
  

  

  August 
  Septe 
  

  

  lillflll; 
  

   10 
  

  

  mbei 
  

  

  13 
  

  

  Fig. 
  13.— 
  Diagram 
  showing 
  the 
  time 
  of 
  emergence 
  of 
  the 
  first-brood 
  moths 
  of 
  the 
  grape-berry 
  moth 
  in 
  1907, 
  

  

  at 
  North 
  East, 
  Pa. 
  (Original.) 
  

  

  minimum 
  being 
  5 
  days 
  and 
  the 
  maximum 
  9 
  days. 
  This 
  record 
  

   shows 
  a 
  shorter 
  period 
  than 
  that 
  secured 
  for 
  a 
  smaller 
  number 
  of 
  

   eggs 
  in 
  1909 
  (see 
  Table 
  XII, 
  which 
  shows 
  an 
  average 
  of 
  10.1 
  days, 
  

   a 
  minimum 
  of 
  9 
  days, 
  and 
  a 
  maximum 
  of 
  11 
  days). 
  

  

  Table 
  XVIII.— 
  Length 
  of 
  incubation 
  of 
  second-brood 
  eggs 
  of 
  the 
  grape-berry 
  moth, 
  North 
  

  

  East, 
  Pa,, 
  1907. 
  

  

  No. 
  

   of 
  ob- 
  

   serva- 
  

   tion. 
  

  

  Date- 
  

  

  Days 
  

   of 
  in- 
  

   cuba- 
  

   tion. 
  

  

  No. 
  

   of 
  ob- 
  

   serva- 
  

   tion. 
  

  

  Date- 
  

  

  Days 
  

   of 
  in- 
  

   cuba- 
  

   tion. 
  

  

  No. 
  

   of 
  ob- 
  

   serva- 
  

   tion. 
  

  

  Date- 
  

  

  Days 
  

   of 
  in- 
  

   cuba- 
  

   tion. 
  

  

  Laid. 
  

  

  Hatched. 
  

  

  Laid. 
  

  

  Hatched. 
  

  

  Laid. 
  

  

  Hatched. 
  

  

  1 
  

  

  2 
  

   3 
  

   4 
  

   5 
  

   6 
  

   7 
  

   8 
  

   9 
  

   10 
  

   11 
  

   12 
  

   13 
  

  

  Aug. 
  31 
  

   ...do.... 
  

   ...do.... 
  

   ...do.... 
  

   ...do.... 
  

  

  ...do 
  

  

  ...do.... 
  

   ...do.... 
  

   ...do.... 
  

   ...do.... 
  

   ...do.... 
  

   ...do.... 
  

  

  Sept. 
  1 
  

  

  Sept. 
  6 
  

  

  '.'.'.do'.'.'.'. 
  

   ...do.... 
  

   Sept. 
  7 
  

  

  '.'.'.do'.'.'.'. 
  

   ...do.... 
  

   ...do.... 
  

   Sept. 
  8 
  

  

  ".".'.do*.".'.'. 
  

   Sept. 
  9 
  

  

  6 
  

   6 
  

  

  6 
  ! 
  

   6 
  1 
  

  

  i 
  

  

  7 
  

   7 
  

   8 
  

   8 
  

   8 
  

   8 
  

  

  14 
  

   15 
  

   16 
  

   17 
  

   18 
  

   19 
  

   20 
  

   21 
  

   22 
  

   23 
  

   24 
  

   25 
  

   26 
  

  

  Sept. 
  1 
  

  

  '.'.'.do'.'.'.'. 
  

   ...do.... 
  

   Sept. 
  10 
  

  

  '.'.'.do'.'.'.'. 
  

   ...do.... 
  

   ...do.... 
  

   ...do.... 
  

   ...do.... 
  

   ...do.... 
  

   ...do.... 
  

  

  Sept. 
  9 
  

  

  ...do 
  

  

  ...do.... 
  

   ...do.... 
  

  

  Sept. 
  16 
  

  

  '.'.'.do'.'.'.'. 
  

   ...do.... 
  

   ...do.... 
  

   ...do.... 
  

   ...do.... 
  

   ...do.... 
  

   ...do.... 
  

  

  8 
  

   8 
  

   8 
  

   8 
  

   6 
  

   6 
  

   6 
  

   6 
  

   6 
  

   6 
  

   6 
  

   6 
  

   6 
  

  

  27 
  

   28 
  

   29 
  

   30 
  

   31 
  

   32 
  

   33 
  

   34 
  

   35 
  

  

  Sept. 
  10 
  

  

  Sept."h' 
  

  

  ...do'.'.'.'. 
  

   Sept. 
  12 
  

  

  '.'.'.do'.'.'.'. 
  

   ...do.... 
  

  

  Sept. 
  16 
  

   Sept. 
  17 
  

   Sept. 
  16 
  

   Sept. 
  17 
  

  

  '.'.'.do'.'.'.'. 
  

   ...do.... 
  

   ...do.... 
  

   Sept. 
  18 
  

  

  6 
  

   7 
  

   5 
  

   6 
  

   6 
  

   5 
  

   5 
  

   5 
  

   6 
  

  

  Ave 
  

   Mas 
  

   Min 
  

  

  rage 
  

  

  .imum 
  . 
  . 
  . 
  

   imum 
  

  

  6.5 
  

  

  8 
  

   5 
  

  

  