﻿PROCEEDINGS 
  OF 
  THE 
  FOURTH 
  ENTOMOLOGICAL 
  MEETING 
  121 
  

  

  next 
  year. 
  They 
  did 
  not 
  mind 
  the 
  dry 
  conditions 
  prevalent 
  during 
  

   the 
  v\Ainter 
  and 
  the 
  hot 
  weather. 
  Therefore 
  the 
  insect 
  appears 
  to 
  

   have 
  only 
  one 
  generation 
  in 
  the 
  year, 
  some 
  probably 
  having 
  two. 
  

  

  The 
  caterpillars 
  are 
  observed 
  to 
  enter 
  the 
  stem 
  near 
  the 
  base 
  through 
  

   a 
  hole 
  gnawed 
  on 
  the 
  side 
  and 
  then 
  bore 
  down 
  towards 
  the 
  root. 
  The 
  

   result 
  of 
  course 
  is 
  dead 
  heart. 
  When 
  full-grown 
  the 
  larva 
  usually 
  

   leaves 
  the 
  stem 
  and 
  pupates 
  in 
  a 
  tubelike 
  silken 
  cocoon 
  formed 
  under 
  

   the 
  earth 
  and 
  among 
  the 
  roots 
  of 
  the 
  plants 
  in 
  the 
  clump. 
  The 
  cocoon 
  

   goes 
  down 
  vertically 
  or 
  obliquely 
  to 
  a 
  depth 
  of 
  about 
  three-fourths 
  

   of 
  an 
  inch, 
  its 
  mouth 
  remaining 
  open 
  at 
  the 
  surface 
  of 
  the 
  soil 
  so 
  as 
  

   to 
  enable 
  the 
  moth 
  to 
  emerge 
  without 
  difficulty. 
  The 
  pupa 
  lies 
  at 
  

   the 
  closed 
  bottom 
  end 
  with 
  its 
  head 
  turned 
  towards 
  thfe 
  "opening. 
  The 
  

   pupal 
  period 
  is 
  about 
  nine 
  days. 
  

  

  The 
  caterpillars 
  cannot 
  attack 
  paddy 
  in 
  submerged 
  lands. 
  They 
  

   have 
  been 
  observed 
  to 
  occur 
  only 
  in 
  dry 
  land 
  paddy 
  and 
  the 
  other 
  food- 
  

   plant 
  observed, 
  viz., 
  mama 
  {Eleusine 
  coracana) 
  is 
  also 
  a 
  dry 
  land 
  crop. 
  

   Their 
  habit 
  of 
  feeding 
  and 
  pupating 
  underground 
  precludes 
  their 
  occu- 
  

   rence 
  in 
  submerged 
  crops. 
  

  

  A 
  full-grown 
  larva 
  measures 
  about 
  12 
  mm. 
  in 
  length 
  and 
  is 
  about 
  

   2 
  mm. 
  across 
  the 
  mesothorax 
  which 
  is 
  the 
  broadest 
  part 
  from 
  which 
  

   the 
  body 
  tapers 
  gradually 
  though 
  slightly 
  towards 
  both 
  extremities. 
  

   The 
  shape 
  is 
  cylindrical 
  and 
  the 
  segments 
  clearly 
  distinguished. 
  The 
  

   head 
  is 
  yellow, 
  hardly 
  glossy, 
  has 
  brown 
  mouthparts 
  and 
  is 
  partly 
  

   Tetractile 
  into 
  the 
  prothorax. 
  The 
  body 
  is 
  uniform 
  creamy 
  white 
  

   without 
  any 
  warts. 
  The 
  meso- 
  and 
  meta-thoracic 
  segments 
  are 
  divided 
  

   into 
  three 
  subsegments 
  of 
  which 
  the 
  middle 
  one 
  is 
  the 
  largest. 
  The 
  

   eight 
  abdominal 
  segments 
  are 
  divided 
  into 
  two 
  subsegments 
  of 
  which 
  

   the 
  anterior 
  one 
  is 
  larger 
  than 
  the 
  posterior 
  one. 
  The 
  hairs 
  are 
  thin, 
  

   whitish. 
  The 
  spiracles 
  are 
  round, 
  yellowish 
  with 
  a 
  narrow 
  brown 
  rim. 
  

   The 
  booklets 
  on 
  abdominal 
  prolegs 
  are 
  arranged 
  in 
  an 
  elongated 
  oval 
  

   outline, 
  the 
  inner 
  end 
  of 
  this 
  outline 
  being 
  narrower 
  than 
  the 
  outer 
  

   end. 
  There 
  are 
  five 
  pairs 
  of 
  short 
  but 
  equally 
  developed 
  prolegs. 
  

  

  The 
  pupa 
  is 
  about 
  8 
  mm. 
  long 
  and 
  about 
  2 
  mm. 
  thick 
  across 
  the 
  

   thorax, 
  cylindrical 
  in 
  shape, 
  tapering 
  at 
  the 
  head 
  end 
  as 
  well 
  as 
  hind- 
  

   wards. 
  The 
  head 
  end 
  is 
  somewhat 
  protruded, 
  the 
  protruded 
  part 
  

   being 
  compressed 
  in 
  the 
  lateral 
  plane 
  and 
  having 
  a 
  raised 
  ridge 
  in 
  the 
  

   middorsal 
  as 
  well 
  as 
  in 
  the 
  midventral 
  region. 
  The 
  abdominal 
  segments 
  

   are 
  devoid 
  of 
  spines 
  or 
  ridges 
  or 
  roughnesses. 
  The 
  spiracles 
  are 
  broadly 
  

   oval, 
  rather 
  large, 
  brown 
  spots 
  under 
  which 
  a 
  tracheal 
  tube 
  is 
  visible" 
  

   in 
  the 
  abdominal 
  region. 
  The 
  hind 
  end 
  has 
  six 
  pyramid-shaped 
  papillae 
  

   arranged 
  in 
  a 
  straight 
  row 
  in 
  the 
  lateral 
  plane. 
  The 
  two 
  outside 
  papillae 
  

   are 
  large 
  and 
  the 
  others 
  diminish 
  in 
  size 
  inwards. 
  Each 
  of 
  them 
  is 
  

  

  