﻿120 
  PROCEEDINGS 
  OF 
  THE 
  FOURTH 
  EA'TOMOI.OGICAL 
  MEETING 
  

  

  Pupation 
  takes 
  place 
  inside 
  the 
  stem 
  or 
  rootstock 
  and 
  rarely 
  in 
  the 
  

   ground. 
  The 
  periods 
  of 
  the 
  different 
  stages 
  are 
  not 
  definitely 
  known. 
  

   The 
  life-cycle 
  seems 
  to 
  be 
  completed 
  in 
  about 
  three 
  to 
  four 
  weeks. 
  

  

  The 
  fullgrown 
  grub 
  is 
  about 
  4 
  mm. 
  long 
  and 
  about 
  1-5 
  mm. 
  across 
  

   the 
  thoracic 
  region 
  from 
  which 
  the 
  body 
  tapers 
  gradually 
  both 
  ways. 
  

   The 
  head 
  is 
  much 
  smaller 
  than 
  the 
  prothorax, 
  pale 
  yellow 
  in 
  colour 
  

   and 
  glossy. 
  The 
  body 
  is 
  subcylindrical 
  in 
  shape 
  being 
  slightly 
  com- 
  

   pressed 
  in 
  the 
  dorsoventral 
  plane. 
  The 
  skin 
  is 
  wrinkled 
  and 
  the 
  seg- 
  

   ments 
  are 
  hardly 
  distinguishable. 
  The 
  colour 
  of 
  the 
  body 
  is 
  pale 
  yellow 
  

   with 
  a 
  brownish 
  tinge 
  which 
  disappears 
  before 
  pupation. 
  On 
  each 
  side 
  

   a 
  white 
  tracheal 
  tube 
  is 
  visible 
  under 
  the 
  skin. 
  The 
  pupa 
  is 
  about 
  S 
  

   mm. 
  long 
  and 
  of 
  the 
  ordinary 
  Curculionid 
  type. 
  It 
  is 
  yellowish 
  white 
  

   in 
  colour. 
  The 
  weevil 
  is 
  black. 
  

  

  Sesamia 
  infer 
  ens. 
  

   To 
  the 
  foodplants 
  Lemon 
  grass 
  is 
  added. 
  

  

  C. 
  S. 
  1666. 
  

   Katra 
  {Androjpogon 
  squarrosus) 
  is 
  added 
  to 
  the 
  foodplants. 
  

  

  HeterograpMs 
  sp. 
  (C. 
  S. 
  1700). 
  

  

  The 
  Phycitid 
  borer 
  of 
  tender 
  maize 
  cob 
  referred 
  to 
  at 
  page 
  373 
  

   of 
  the 
  first 
  paper 
  is 
  Heterographis 
  sp. 
  It 
  has 
  not 
  been 
  observed 
  to- 
  

   occur 
  again. 
  

  

  The 
  Phycitid 
  Borer. 
  (C. 
  S. 
  1837 
  and 
  2060). 
  

   (Plate 
  XIX, 
  fig. 
  1.) 
  

  

  Foodplants 
  — 
  Marua 
  [Eleusine 
  coracana). 
  

   Rice 
  {Oryza 
  sativa). 
  

   This 
  borer 
  has 
  been 
  referred 
  to 
  in 
  the 
  first 
  paper 
  {Proc. 
  Third 
  EntL 
  

   Meeting, 
  p. 
  378) 
  as 
  occurring 
  in 
  Eleusine 
  coracana 
  but 
  it 
  has 
  since 
  been 
  

   observed 
  in 
  rice 
  stems 
  also. 
  It 
  however 
  never 
  appeared 
  in 
  large 
  numbers 
  

   and 
  from 
  its 
  seasonal 
  history 
  and 
  its 
  habits 
  it 
  appears 
  that 
  it 
  will 
  most 
  

   probably 
  never 
  rise 
  to 
  the 
  rank 
  of 
  a 
  major 
  pest. 
  The 
  caterpillars 
  have 
  

   been 
  observed 
  to 
  rest 
  in 
  the 
  Insectary 
  from 
  September 
  to 
  the 
  end 
  of 
  

   June 
  and 
  they 
  have 
  been 
  collected 
  from 
  the 
  fields 
  in 
  July 
  and 
  August, 
  

   moths 
  being 
  reared 
  in 
  the 
  Insectary 
  between 
  8th 
  August 
  and 
  6th 
  Sep- 
  

   teinber. 
  Out 
  of 
  a 
  lot 
  of 
  seven 
  caterpillars 
  collected 
  in 
  the 
  latter 
  half 
  

   of 
  August 
  three 
  developed 
  into 
  moths 
  between 
  28th 
  August 
  and 
  6th 
  

   September 
  and 
  the 
  others 
  rested 
  as 
  stated 
  above, 
  till 
  the 
  end 
  of 
  June 
  

  

  