﻿124 
  Mr. 
  J. 
  W. 
  Douglas 
  on 
  British 
  Microlepidoptera. 
  

  

  Gracillaria 
  st'igmatcUa, 
  Fabriciiis, 
  Zellcr, 
  Stainton. 
  (Trans. 
  Ent. 
  

   Soc. 
  i. 
  N. 
  S. 
  120.) 
  

  

  Larva 
  (PI. 
  XIV. 
  fig. 
  2 
  a). 
  — 
  Length 
  S\ 
  lines. 
  — 
  Greenish 
  white, 
  

   head 
  yellowish, 
  with 
  two 
  brown 
  spots 
  at 
  the 
  side 
  ; 
  jaws 
  brown 
  ; 
  

   short 
  white 
  hairs 
  on 
  the 
  whole 
  length. 
  The 
  six 
  pectoral, 
  six 
  

   ventral, 
  and 
  two 
  anal 
  legs 
  are 
  of 
  the 
  same 
  colour 
  as 
  the 
  body. 
  

   Feeds 
  on 
  the 
  leaves 
  of 
  sallows, 
  poplars, 
  and 
  willows, 
  rolling 
  and 
  

   fastening 
  up 
  the 
  ends 
  into 
  the 
  form 
  of 
  a 
  cone 
  (PI. 
  XIV. 
  fig. 
  2 
  b), 
  

   within 
  which 
  it 
  lives, 
  consuming 
  the 
  portion 
  rolled 
  up 
  ; 
  taking 
  

   care, 
  however, 
  not 
  to 
  destroy 
  the 
  outer 
  epidermis. 
  This 
  soon 
  

   becomes 
  discoloured, 
  and 
  when 
  the 
  supply 
  of 
  food 
  is 
  exhausted, 
  

   the 
  larva 
  removes, 
  and 
  makes 
  another 
  similar 
  habitation, 
  and 
  so 
  

   on 
  several 
  times 
  in 
  succession. 
  Found 
  in 
  August, 
  September, 
  

   and 
  October. 
  

  

  Pupa, 
  in 
  a 
  cocoon 
  attached 
  to 
  a 
  leaf 
  (PI. 
  XIV. 
  fig. 
  2 
  c). 
  

  

  Imago 
  (PI. 
  XIV. 
  fig. 
  2). 
  — 
  Found 
  in 
  Septem.ber 
  and 
  October, 
  

   and 
  hybernated 
  specimens 
  in 
  March 
  and 
  April. 
  

  

  Gracillaria 
  auroguttella, 
  Stephens, 
  Stainton. 
  (Trans. 
  Ent. 
  Soc. 
  i. 
  

   N.S. 
  187.) 
  

  

  Larva 
  (PI. 
  XIV. 
  fig. 
  3 
  a). 
  -Length 
  2| 
  lines. 
  — 
  Pale 
  whitish 
  

   green, 
  slightly 
  shining, 
  with 
  short 
  hairs 
  on 
  its 
  whole 
  length. 
  The 
  

   dorsal 
  vessel 
  shining 
  through, 
  of 
  a 
  dark 
  green 
  colour. 
  The 
  six 
  

   pectoral, 
  six 
  ventral 
  and 
  two 
  anal 
  legs 
  are 
  of 
  the 
  colour 
  of 
  the 
  

   body. 
  Head 
  pale 
  brown. 
  

  

  It 
  first 
  mines 
  the 
  leaves 
  of 
  Hi/pericum 
  perforatum 
  and 
  //. 
  

   humifusum 
  in 
  the 
  centre, 
  and 
  as 
  the 
  gallery 
  increases 
  in 
  length 
  and 
  

   width 
  (though 
  it 
  never 
  becomes 
  very 
  wide), 
  the 
  under 
  side 
  of 
  the 
  

   leaf 
  is 
  contracted, 
  and 
  the 
  edges 
  turn 
  down. 
  After 
  living 
  as 
  a 
  

   miner 
  until 
  the 
  gallery 
  is 
  one-third 
  or 
  half 
  an 
  inch 
  in 
  length, 
  it 
  

   quits 
  it 
  and 
  turns 
  down 
  the 
  end 
  of 
  a 
  leaf 
  in 
  a 
  conical 
  shape 
  (PI. 
  

   XIV. 
  fig. 
  3 
  b), 
  and 
  feeding 
  within, 
  the 
  cone 
  at 
  first 
  green, 
  soon 
  

   becomes 
  whitish, 
  and 
  then 
  brown, 
  and 
  it 
  removes 
  and 
  forms 
  

   several 
  of 
  these 
  habitations 
  in 
  succession, 
  each 
  larger 
  than 
  the 
  

   previous 
  one. 
  When 
  full 
  fed, 
  it 
  rolls 
  a 
  leaf 
  no 
  longer 
  across 
  

   and 
  conically, 
  but 
  lengthwise, 
  and 
  as 
  a 
  tube 
  ; 
  and 
  this 
  (soon 
  

   becoming 
  brown) 
  resembles 
  a 
  miniature 
  cigar 
  (PI. 
  XIV. 
  fig. 
  3 
  c). 
  

   In 
  this, 
  after 
  spinning 
  a 
  closely 
  fitting 
  silken 
  web, 
  it 
  becomes 
  a 
  

   pupa 
  (PI. 
  XIV. 
  fig. 
  3 
  d). 
  There 
  are 
  two 
  broods 
  in 
  a 
  year 
  ; 
  the 
  

   first 
  in 
  the 
  beginning 
  of 
  July, 
  producing 
  perfect 
  insects 
  in 
  

   August 
  ; 
  tlie 
  other 
  in 
  October, 
  remaining 
  all 
  winter 
  in 
  the 
  pupa 
  

   state, 
  and 
  transforming 
  in 
  May. 
  

  

  Imago 
  (PI. 
  XIV. 
  fig. 
  3). 
  

  

  