﻿PEOCEEDTiNTGS 
  OF 
  THE 
  FOUETH 
  ENTOAIOLOGICAL 
  MEETING 
  125 
  

  

  Pupation 
  takes 
  inside 
  bored 
  stems 
  in 
  silken 
  cocoons 
  with 
  pellets 
  

   of 
  excreta 
  and 
  bits 
  of 
  leaf 
  webbed 
  on 
  its 
  surface. 
  One 
  end 
  of 
  the 
  cocoon 
  

   communicates 
  with 
  the 
  hole 
  of 
  exit 
  the 
  larva 
  prepares 
  for 
  the 
  future 
  

   moth 
  on 
  the 
  side 
  of 
  the 
  stem, 
  the 
  mouth 
  of 
  the 
  hole 
  being 
  closed 
  with 
  

   the 
  thin 
  epidermal 
  layer 
  of 
  the 
  leaf 
  sheath. 
  

  

  Pupa 
  is 
  about 
  11 
  mm. 
  long 
  by 
  about 
  2-5 
  mm. 
  across 
  the 
  thoracic 
  

   region 
  which 
  is 
  slightly 
  compressed 
  in 
  the 
  dorsoventral 
  plane. 
  The 
  

   abdominal 
  region 
  is 
  cylindrical 
  and 
  tapering 
  hindwards 
  almost 
  to 
  a 
  

   point. 
  The 
  head 
  end 
  is 
  tapering, 
  with 
  an 
  indistinct 
  longitudinal 
  ridge 
  

   on 
  its 
  ventral 
  side. 
  The 
  spiracles 
  are 
  elongated 
  oval, 
  brown-rimmed. 
  

   The 
  colour 
  is 
  yellow 
  with 
  a 
  brownish 
  tinge 
  at 
  the 
  anterior 
  part. 
  

  

  Crambus 
  corticellus, 
  Hmpsn. 
  

   (Plate 
  XXII.) 
  

  

  Foodplant 
  — 
  Scirpus 
  corymhosus. 
  

  

  This 
  insect 
  was 
  observed 
  to 
  bore 
  the 
  sedge 
  named 
  above 
  at 
  Nagpur 
  

   by 
  Mr. 
  J. 
  L. 
  Khare. 
  The 
  caterpillars 
  were 
  collected 
  in 
  January, 
  April 
  

   and 
  May. 
  There 
  are 
  specimens 
  in 
  the 
  Pusa 
  collection 
  taken 
  at 
  Pusa 
  

   almost 
  throughout 
  the 
  year. 
  Apparently 
  the 
  insect 
  is 
  active 
  throughout 
  

   the 
  year. 
  

  

  A 
  larva, 
  about 
  half-grown 
  and 
  preserved 
  in 
  spirit, 
  has 
  a 
  glossy 
  brown 
  

   head. 
  The 
  prothoracic 
  shield 
  is 
  of 
  the 
  same 
  colour 
  as 
  but 
  paler 
  than 
  

   the 
  head. 
  Warts 
  on 
  the 
  segments 
  large, 
  roundish 
  and 
  of 
  the 
  same 
  

   colour 
  as 
  the 
  prothoracic 
  shield. 
  The 
  general 
  colour 
  of 
  the 
  body 
  is 
  pale 
  

   yellow. 
  The 
  prothoracic 
  and 
  the 
  eighth 
  abdominal 
  pairs 
  of 
  spiracles 
  

   are 
  much 
  larger 
  than 
  the 
  others. 
  All 
  the 
  spiracles 
  elongated 
  oval, 
  a 
  

   brown 
  rim 
  enclosing 
  a 
  clear 
  space. 
  The 
  booklets 
  on 
  prolegs 
  are 
  arranged 
  

   in 
  a 
  complete 
  circle. 
  

  

  Pupa, 
  about 
  14 
  mm. 
  long 
  and 
  about 
  3 
  mm. 
  thick, 
  cylindrical 
  and 
  

   brownish 
  yellow 
  in 
  colour. 
  The 
  abdominal 
  segments 
  possess 
  no 
  spines 
  

   or 
  roughnesses. 
  The 
  dorsal 
  part 
  of 
  the 
  hind 
  end 
  is 
  protruded 
  to 
  some 
  

   extent 
  and 
  the 
  protruded 
  part 
  has 
  a 
  rounded 
  margin, 
  is 
  flat 
  on 
  the 
  

   ventral 
  and 
  convex 
  on 
  the 
  dorsal 
  side 
  and 
  possesses 
  no 
  spines 
  of 
  any 
  

   kind. 
  

  

  Bactra 
  truculenta, 
  Meyr. 
  

  

  (Plate 
  XXIII, 
  fig. 
  1.) 
  

  

  Foodplant— 
  Moo^/ta 
  (Cy 
  penis 
  rotundus). 
  

  

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

   ■Entl. 
  Meeting, 
  p. 
  394). 
  It 
  has 
  not 
  been 
  observed 
  to 
  occur 
  in 
  any 
  other 
  

  

  