﻿426 
  

  

  BRITISH 
  LEPIDOPTERA. 
  

  

  secondary 
  hairs, 
  but 
  there 
  are 
  one 
  or 
  two 
  hairs 
  to 
  each 
  segment 
  in 
  the 
  

   ventral 
  area. 
  The 
  most 
  striking 
  point 
  in 
  the 
  hairs 
  of 
  this 
  instar 
  is 
  the 
  

   extraordinary 
  length 
  of 
  those 
  of 
  tubercle 
  ii 
  on 
  the 
  8th 
  and 
  9th 
  abdominal 
  

   segments; 
  these 
  hairs 
  extend 
  to 
  a 
  length 
  of 
  0-4mm., 
  nearly 
  half 
  the 
  

   length 
  of 
  the 
  newly-hatched 
  larva. 
  The 
  hairs 
  of 
  the 
  first 
  instar 
  are 
  

   actually 
  very 
  little 
  shorter 
  than 
  those 
  of 
  the 
  second 
  instar, 
  and 
  therefore 
  

   very 
  much 
  longer 
  in 
  proportion 
  to 
  the 
  size 
  of 
  the 
  larva. 
  Second 
  instar 
  : 
  

   Width 
  of 
  head 
  0*3mm. 
  Length 
  of 
  larva 
  rather 
  over 
  2mm. 
  Rather 
  

   stout 
  and 
  maggot-like. 
  Head 
  brown, 
  suture, 
  clypeal 
  borders 
  and 
  ocelli 
  

   dark 
  brown. 
  Body 
  pale 
  whitish-ochreous, 
  much 
  attenuated 
  posteriorly, 
  

   segmental 
  divisions 
  well-marked. 
  Thoracic 
  shield 
  deep 
  ochreous, 
  with 
  

   a 
  faint 
  pale 
  line 
  running 
  down 
  the 
  centre. 
  Anal 
  shield 
  also 
  deep 
  

   ochreous. 
  Head 
  smooth, 
  shining, 
  with 
  a 
  long 
  hair 
  on 
  each 
  side, 
  not 
  

   far 
  from 
  the 
  clypeus, 
  and 
  several 
  shorter 
  hairs. 
  Thoracic 
  shield 
  with 
  

   a 
  front 
  row 
  of 
  six 
  hairs, 
  the 
  two 
  outermost 
  much 
  the 
  longest, 
  a 
  pair 
  

   of 
  short 
  hairs 
  in 
  the 
  centre, 
  and 
  two 
  very 
  long 
  hairs 
  on 
  its 
  posterior 
  

   border. 
  The 
  prothoracic 
  spiracle 
  is 
  large 
  and 
  tall, 
  dark-bordered 
  ; 
  the 
  

   abdominal 
  spiracles 
  are 
  also 
  large 
  and 
  elevated. 
  The 
  skin 
  of 
  the 
  larva 
  

   is 
  very 
  strongly, 
  and 
  rather 
  coarsely, 
  spiculated. 
  No 
  proper 
  secondary 
  

   hairs. 
  The 
  tubercles 
  are 
  single-haired, 
  all 
  quite 
  separate, 
  small, 
  and 
  

   little 
  elevated, 
  iii 
  being 
  the 
  largest. 
  On 
  the 
  meso- 
  and 
  metathorax, 
  i 
  r 
  

   ii, 
  and 
  iii 
  are 
  nearly 
  in 
  line 
  ; 
  iii 
  has, 
  just 
  behind 
  it, 
  a 
  very 
  small 
  tubercle 
  

   with 
  a 
  very 
  short 
  hair. 
  On 
  the 
  abdominal 
  segments, 
  i 
  and 
  ii 
  are 
  close 
  

   together 
  and 
  fairly 
  in 
  the 
  centre 
  of 
  the 
  segment 
  ; 
  i 
  carries 
  a 
  short 
  hair, 
  

   about 
  0-07mm., 
  flattened 
  towards 
  the 
  apex, 
  which 
  is 
  shallowly 
  notched 
  ; 
  ii 
  

   has 
  a 
  long 
  hair, 
  about 
  0-2nim., 
  running 
  to 
  a 
  fine 
  point. 
  On 
  the 
  9th 
  

   and 
  10th 
  abdominal 
  segments, 
  ii 
  carries 
  a 
  very 
  long 
  hair, 
  about 
  046mm. 
  

   in 
  length 
  ; 
  iii 
  bears 
  a 
  hair 
  similar 
  to 
  that 
  of 
  ii 
  ; 
  iv 
  and 
  v 
  are 
  quite 
  

   separate, 
  the 
  front 
  one, 
  v, 
  carries 
  a 
  short 
  hair 
  (0 
  # 
  06mm.) 
  with 
  blunt 
  tip, 
  

   and 
  the 
  other, 
  iv, 
  bears 
  a 
  longer 
  hair 
  with 
  a 
  pointed 
  tip, 
  about 
  0-15mm. 
  

   in 
  length. 
  On 
  the 
  thoracic 
  segments, 
  this 
  group 
  consists 
  of 
  three 
  

   tubercles; 
  here 
  v, 
  instead 
  of 
  being 
  above 
  and 
  m 
  front 
  of 
  iv, 
  appears 
  to 
  

   have 
  dropped 
  down 
  to 
  just 
  below 
  iv, 
  while 
  the 
  third 
  member 
  of 
  the 
  

   group 
  is 
  close 
  behind 
  iv, 
  and 
  bears 
  a 
  very 
  short 
  bluntly-tipped 
  hair 
  

   about 
  half 
  as 
  long 
  as 
  that 
  of 
  v. 
  On 
  the 
  thoracic 
  segments, 
  some 
  

   way 
  below 
  iv 
  and 
  v, 
  is 
  a 
  pair 
  of 
  tubercles, 
  the 
  front 
  one 
  with 
  a 
  

   short 
  hair, 
  and 
  the 
  posterior 
  with 
  a 
  hair 
  double 
  that 
  of 
  the 
  front 
  

   one. 
  On 
  the 
  abdomen, 
  vi 
  is 
  a 
  small 
  tubercle 
  with 
  a 
  short 
  hair 
  ; 
  

   vii 
  is 
  a 
  group 
  of 
  three 
  tubercles, 
  a 
  moderate 
  one 
  with 
  a 
  hair 
  

   about 
  0-07mm. 
  and 
  two 
  small 
  tubercles 
  with 
  very 
  short 
  hairs. 
  

   The 
  legs 
  are 
  rather 
  long, 
  but 
  the 
  ventral 
  claspers 
  are 
  very 
  short, 
  and 
  

   without 
  any 
  crochets, 
  except 
  the 
  anal 
  pair, 
  which 
  bears 
  three 
  very 
  

   large 
  crochets 
  on 
  each 
  clasper 
  ; 
  they 
  are 
  placed 
  at 
  about 
  equal 
  distances 
  

   apart, 
  and 
  the 
  hooked 
  ends 
  are 
  directed 
  forwards 
  (Sich). 
  ? 
  Third 
  instar 
  

   (after 
  hybernation): 
  3mm. 
  long; 
  the 
  head 
  brown, 
  darker 
  on 
  the 
  

   posterior 
  margin, 
  prothoracic 
  shield 
  brown, 
  shining, 
  undivided 
  ; 
  

   on 
  the 
  dorsum 
  of 
  the 
  9th 
  abdominal 
  segment 
  is 
  a 
  brown, 
  strongly 
  

   chitinous, 
  bristly, 
  transverse 
  plate 
  ; 
  the 
  horse-shoe-shaped 
  depressions 
  

   between 
  the 
  dorsal 
  warts 
  are 
  absent 
  ; 
  anal 
  shield 
  and 
  warts 
  as 
  in 
  the 
  

   fullgrown 
  larva 
  (Hofmann. 
  May2oth, 
  1898). 
  Penultimate 
  instar 
  : 
  5mm. 
  

   long 
  ; 
  a 
  brown 
  thoracic 
  shield, 
  divided 
  by 
  a 
  fine 
  bright 
  line 
  ; 
  on 
  the 
  other 
  

   hand, 
  the 
  brown 
  transverse 
  plate 
  of 
  the 
  9th 
  abdominal 
  segment 
  has 
  

   disappeared, 
  and 
  is 
  replaced 
  by 
  the 
  ordinary 
  warts 
  ; 
  all 
  else 
  as 
  in 
  the 
  full- 
  

  

  