﻿442 
  BRITISH 
  LEPIDOPTERA.j 
  

  

  side 
  of 
  the 
  lower 
  leaves 
  of 
  Hieracium, 
  but 
  later 
  obtained 
  them 
  

   more 
  abundantly 
  on 
  the 
  upper 
  central 
  parts 
  of 
  the 
  plants, 
  where 
  they 
  

   concealed 
  themselves 
  by 
  drawing 
  the 
  nearest 
  portions 
  of 
  the 
  plant 
  around 
  

   them. 
  Hofmann 
  says 
  that 
  the 
  larva 
  lives 
  in 
  May 
  and 
  June 
  on 
  

   H. 
  pilosella, 
  under 
  a 
  loose 
  web 
  of 
  white 
  fluff, 
  spun 
  over 
  the 
  central 
  

   shoot. 
  This 
  fluff 
  is 
  scraped 
  off 
  from 
  the 
  underside 
  of 
  the 
  leaves, 
  and 
  

   mixed 
  with 
  a 
  few 
  hairs 
  from 
  the 
  upperside. 
  The 
  maggot-like 
  larva 
  

   under 
  this 
  web 
  bores 
  deep 
  down 
  into 
  the 
  heart 
  of 
  the 
  plant. 
  Pupation 
  

   takes 
  place 
  either 
  in 
  the 
  larval 
  dwelling, 
  or 
  on 
  the 
  underside 
  of 
  a 
  leaf, 
  

   where 
  the 
  fluff 
  is 
  scraped 
  off 
  and 
  formed 
  into 
  a 
  longish 
  cocoon 
  that 
  

   hangs 
  loosely 
  together. 
  

  

  Larva. 
  — 
  Larva 
  brevipes 
  setulis 
  minutis 
  capitatis 
  tecta, 
  exalbida 
  :- 
  

   capite 
  melleo 
  ; 
  seriebus 
  duabus 
  dorsalibus 
  pilorum 
  ternatorum; 
  foveolis 
  

   lateralibus 
  supra 
  seriem 
  pilorum 
  solitariorum. 
  (Larva 
  with 
  short 
  legs, 
  

   with 
  very 
  short, 
  knobbed, 
  seta?, 
  yellowish-white 
  ; 
  with 
  pale 
  yellow 
  head 
  ; 
  

   two 
  rows 
  of 
  triple 
  hairs 
  along 
  the 
  back; 
  a 
  row 
  of 
  depressions 
  above 
  a 
  

   lateral 
  row 
  of 
  single 
  hairs.) 
  Length 
  somewhat 
  under 
  half-an-inch.. 
  

   The 
  small 
  head 
  shortly 
  oval, 
  pale 
  honey-yellow, 
  with 
  dark 
  jaws 
  

   and 
  blackish 
  ocelli, 
  little 
  shining, 
  like 
  the 
  thoracic 
  shield, 
  and 
  drawn 
  

   halfway 
  into 
  the 
  prothorax. 
  The 
  ground 
  colour 
  of 
  the 
  body, 
  which 
  is 
  

   somewhat 
  stout 
  and 
  attenuated 
  at 
  each 
  extremity, 
  is, 
  both 
  in 
  the 
  old 
  

   and 
  young 
  larvae, 
  pale 
  yellowish-white, 
  yellower 
  towards 
  the 
  venter 
  ; 
  the 
  

   last 
  two 
  segments 
  greyish-blue, 
  from 
  the 
  excrement 
  showing 
  through. 
  

   The 
  surface 
  is 
  everywhere 
  clothed 
  with 
  quite 
  short, 
  knobbed, 
  bristles. 
  

   A 
  mediodorsal 
  line 
  is 
  wanting, 
  as 
  well 
  as 
  every 
  other 
  marking 
  ; 
  each 
  

   segment 
  exhibits, 
  in 
  the 
  centre 
  of 
  the 
  dorsum, 
  a 
  very 
  shallow 
  depres- 
  

   sion, 
  forming 
  a 
  posteriorly-open 
  horse-shoe. 
  The 
  middle 
  segments 
  

   have, 
  near 
  this, 
  three 
  hairs, 
  one 
  behind 
  the 
  other, 
  near 
  together, 
  

   diverging 
  above, 
  the 
  central 
  the 
  longest, 
  the 
  last 
  directed 
  obliquely 
  

   backwards. 
  Further 
  down 
  on 
  the 
  side, 
  below 
  a 
  distinct 
  indentation, 
  

   stands 
  a 
  long 
  hair, 
  below 
  w 
  T 
  hich, 
  on 
  the 
  lateral 
  flange, 
  is 
  a 
  separated, 
  

   horizontal, 
  diverging, 
  double 
  hair. 
  The 
  spiracles, 
  which 
  must 
  lie 
  

   above 
  the 
  lateral 
  flange, 
  I 
  was 
  not 
  able 
  to 
  recognise. 
  Segments 
  clearly 
  

   divided 
  ; 
  the 
  skin 
  falls 
  in 
  transverse 
  folds 
  when 
  the 
  larva 
  contracts 
  

   itself. 
  The 
  very 
  short 
  ventral 
  claspers 
  cylindrical, 
  with 
  a 
  slightly 
  in- 
  

   complete 
  brown 
  circle 
  of 
  hooklets. 
  The 
  thoracic 
  legs, 
  also, 
  are 
  of 
  note- 
  

   worthy 
  shortness. 
  The 
  larva 
  is 
  rather 
  hard 
  to 
  the 
  touch, 
  bat 
  not 
  so 
  

   much 
  so 
  as 
  that 
  of 
  P. 
  scarodactylus 
  (Zeller). 
  The 
  larva 
  is 
  spindle-shaped, 
  

   without 
  markings, 
  and 
  of 
  a 
  dull 
  greenish-yellow 
  colour, 
  with 
  fine 
  

   whitishhairs 
  (Plotz 
  teste 
  Freyer). 
  The 
  fullgrown 
  larva 
  is 
  yellowish-white,, 
  

   transversely 
  wrinkled, 
  with 
  distinct 
  lateral 
  flange, 
  feels 
  hard 
  to 
  the 
  

   touch, 
  but 
  not 
  so 
  hard 
  as 
  that 
  oiLeioptilus 
  scarodactylus, 
  without 
  markings, 
  

   beset 
  all 
  over 
  with 
  quite 
  short, 
  white, 
  knobbed, 
  bristles, 
  rising 
  singly. 
  

   Tubercles 
  small, 
  bearing 
  single 
  long 
  white 
  bristles. 
  On 
  the 
  back, 
  there 
  is, 
  on 
  

   each 
  segment, 
  between 
  the 
  dorsal 
  tubercles, 
  a 
  small 
  shallow 
  depression, 
  in 
  

   which 
  four 
  dark, 
  roundish, 
  spots, 
  forming 
  a 
  square, 
  may 
  be 
  seen 
  with 
  

   a 
  strong 
  lens. 
  Laterally, 
  each 
  segment 
  bears 
  another 
  small, 
  roundish, 
  

   depression, 
  with 
  a 
  single-haired 
  tubercle 
  below, 
  then 
  the 
  small 
  spiracle 
  

   margined 
  with 
  pale 
  brown, 
  and 
  below 
  this, 
  on 
  the 
  lateral 
  flange, 
  a 
  tubercle 
  

   bearing 
  two 
  divergent 
  bristles. 
  Head 
  small, 
  retractile, 
  pale 
  honey- 
  

   yellow, 
  with 
  dark 
  brown 
  mouthparts, 
  and 
  two 
  brownish 
  spots 
  on 
  the 
  

   posterior 
  margin, 
  and, 
  like 
  the 
  yellow 
  thoracic 
  shield, 
  hardly 
  shining. 
  

   Anal 
  flap 
  yellowish, 
  with 
  brownish 
  spots. 
  Thoracic 
  legs 
  short, 
  pale 
  

  

  