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  PEOCEEDINGS 
  OP 
  THE 
  FOURTH 
  ENTOMOLOGIGAIi 
  MEETING 
  

  

  The 
  grub 
  stage 
  is 
  very 
  short 
  in 
  the 
  summer. 
  In 
  July 
  it 
  is 
  32 
  to 
  37 
  

   hours, 
  in 
  October 
  it 
  is 
  67 
  hours, 
  while 
  in 
  winter 
  (December) 
  it 
  takes 
  more 
  

   than 
  ten 
  days. 
  (See 
  Table 
  3). 
  

  

  The 
  full-gro-\vu 
  grub 
  is 
  more 
  or 
  less 
  spindle-shaped 
  being 
  thickest 
  

   in 
  the 
  middle. 
  The 
  body 
  wall 
  is 
  very 
  thin 
  and 
  transparent 
  and 
  the 
  

   tracheae 
  , 
  fat 
  cells 
  and 
  contents 
  of 
  the 
  body 
  are 
  seen 
  through 
  it. 
  

  

  The 
  Pujoa. 
  When 
  full-fed 
  the 
  grub 
  leaves 
  the 
  host 
  and 
  wanders 
  

   about 
  till 
  it 
  finds 
  a 
  suitable 
  place 
  to 
  pupate. 
  (Generally, 
  the 
  cocoons 
  

   are 
  prepared 
  under 
  or 
  in 
  close 
  proximity 
  to 
  the 
  remains 
  of 
  the 
  host.) 
  

   The 
  grub 
  prepares 
  a 
  white 
  silken 
  cocoon 
  and 
  pupates 
  inside 
  it. 
  In 
  some 
  

   cases 
  the 
  grubs 
  pupate 
  openly, 
  viz., 
  without 
  spinning 
  a 
  cocoon. 
  The 
  

   fullgrown 
  grub 
  excretes 
  a 
  blackish 
  mass 
  about 
  two 
  hours 
  after 
  finishing 
  

   the 
  cocoon. 
  It 
  now 
  becomes 
  translucent 
  white 
  and 
  changes 
  into 
  a 
  

   pupa 
  shortly 
  after 
  this. 
  The 
  colour 
  of 
  the 
  pupa 
  is 
  white 
  in 
  the 
  begmning 
  

   but 
  it 
  soon 
  develops 
  a 
  reddish 
  tint 
  in 
  certain 
  parts, 
  and 
  the 
  general 
  colour 
  

   becomes 
  yellow. 
  It 
  gradually 
  gets 
  the 
  colour 
  and 
  the 
  markings 
  of 
  the 
  

   adult. 
  

  

  The 
  duration 
  of 
  the 
  pupal 
  stage 
  varies 
  with 
  the 
  season. 
  In 
  the 
  

   summer 
  it 
  is 
  5 
  to 
  6 
  days 
  while 
  in 
  winter 
  it 
  might 
  take 
  as 
  long 
  as 
  27 
  days. 
  

   (See 
  Table 
  4). 
  

  

  The 
  Imago. 
  The 
  adult 
  parasite 
  emerges 
  out 
  by 
  cutting 
  a 
  small 
  

   hole 
  near 
  one 
  end 
  of 
  the 
  cocoon. 
  

  

  It 
  is 
  difficult 
  to 
  find 
  out 
  the 
  length 
  of 
  the 
  life 
  of 
  an 
  imago. 
  In 
  the 
  

   laboratory 
  the 
  males 
  lived 
  as 
  long 
  as 
  14 
  to 
  16 
  days 
  and 
  females 
  as 
  long 
  

   as 
  28 
  days. 
  It 
  appears 
  that 
  in 
  captivity 
  the 
  females 
  that 
  had 
  laid 
  eggs 
  

   died 
  off 
  sooner 
  than 
  the 
  females 
  that 
  had 
  not 
  laid 
  any 
  eggs, 
  but 
  as 
  the 
  

   records 
  are 
  from 
  two 
  different 
  seasons 
  no 
  definite 
  statement 
  can 
  be 
  made 
  

   (See 
  Table 
  5). 
  . 
  

  

  Table 
  5. 
  

  

  