﻿REPORT 
  OF 
  THE 
  STATE 
  ENTOMOLOGIST 
  349 
  

  

  hairs 
  thinly 
  scattered 
  over 
  the 
  body; 
  the 
  head 
  and 
  legs 
  are 
  pale 
  orange 
  

   colored 
  ; 
  the 
  oval 
  spiracles, 
  or 
  breathing 
  holes, 
  on 
  the 
  sides, 
  are 
  large 
  

   and 
  white, 
  encircled 
  with 
  green 
  ; 
  on 
  eacli 
  of 
  the 
  rings, 
  except 
  the 
  first, 
  

   there 
  are 
  six 
  thorny 
  knobs 
  on 
  hard 
  and 
  pointed 
  warts 
  of 
  a 
  yellow 
  color, 
  

   covered 
  with 
  short" 
  black 
  prickles 
  ; 
  the 
  two 
  uppermost 
  of 
  these 
  warts 
  on 
  

   the 
  top 
  of 
  the 
  second 
  and 
  third 
  rings 
  are 
  a 
  quarter 
  of 
  an 
  inch 
  or 
  more 
  

   in 
  length, 
  curved 
  backward 
  like 
  horns, 
  and 
  are 
  of 
  a 
  deeper 
  yellow 
  

   color 
  than 
  the 
  rest 
  ; 
  the 
  three 
  triangular 
  pieces 
  on 
  the 
  posterior 
  extremity 
  

   of 
  the 
  body 
  are 
  brown, 
  with 
  yellow 
  margins, 
  and 
  are 
  covered 
  with 
  raised 
  

   orange 
  colored 
  dots. 
  

  

  The 
  larval 
  spines. 
  The 
  spines 
  or 
  tubercles 
  in 
  this 
  species 
  show 
  

   remarkable 
  variation 
  and 
  modification 
  in 
  the 
  successive 
  larval 
  stages. 
  

   The 
  dorsal 
  spines 
  on 
  the 
  second 
  and 
  third 
  thoracic 
  segments 
  in 
  the 
  

   newly 
  hatched 
  larvae 
  are 
  from 
  nearly 
  one 
  third 
  to 
  about 
  half 
  as 
  long 
  as 
  

   the 
  body, 
  very 
  slender 
  and 
  deeply 
  forked 
  (plate 
  2, 
  fig. 
  i, 
  c^ 
  d). 
  In 
  the 
  

   second 
  stage, 
  the 
  dorsal 
  spines 
  on 
  the 
  posterior 
  two 
  thoracic 
  segments 
  

   and 
  the 
  eighth 
  abdominal 
  segment 
  are 
  stouter 
  and 
  not 
  quite 
  so 
  deeply 
  

   forked 
  (plate 
  2, 
  fig. 
  2, 
  b. 
  c). 
  In 
  the 
  third 
  stage, 
  the 
  dorsal 
  spines 
  on 
  

   these 
  segments 
  are 
  a 
  little 
  stouter 
  but 
  otherwise 
  nearly 
  the 
  same 
  as 
  in 
  the 
  

   precedmg 
  stage; 
  compare 
  b 
  and 
  d 
  and 
  c 
  and 
  e 
  of 
  fig, 
  2. 
  The 
  varied 
  

   form 
  of 
  some 
  of 
  the 
  other 
  spines 
  are 
  represented 
  on 
  plate 
  2, 
  fig. 
  i., 
  2 
  ; 
  

   see 
  their 
  explanation. 
  

  

  Description 
  of 
  the 
  pupa. 
  The 
  dark 
  mahogany 
  brown 
  pupa 
  of 
  this 
  

   insect 
  varies 
  in 
  length 
  from 
  one 
  and 
  one-half 
  to 
  nearly 
  two 
  inches. 
  It 
  

   is 
  subcylindric 
  in 
  form, 
  broadly 
  rounded 
  at 
  the 
  head, 
  less 
  so 
  at 
  its 
  pos- 
  

   terior 
  extremity 
  with 
  its 
  elongated 
  bifurcate 
  cremaster. 
  The 
  short 
  wing- 
  

   cases 
  extend 
  only 
  to 
  the 
  fifth 
  abdominal 
  segment. 
  The 
  seven 
  oval 
  

   spiracles 
  on 
  each 
  side 
  are 
  conspicuous. 
  Regions 
  of 
  the 
  head 
  and 
  cre- 
  

   master, 
  and 
  the 
  oval 
  subdorsal 
  areas 
  on 
  the 
  first 
  abdominal 
  segment 
  are 
  

   tuberculate; 
  the 
  margins 
  of 
  the 
  abdominal 
  segments 
  are 
  usually 
  minutely 
  

   toothed. 
  The 
  larva 
  pupates 
  in 
  an 
  earthen 
  cell, 
  spinning 
  no 
  cocoon. 
  

   The 
  teeth 
  on 
  the 
  segments 
  and 
  the 
  long 
  forked 
  cremaster 
  enable 
  the 
  

   pupa 
  to 
  work 
  its 
  way 
  to 
  the 
  surface 
  just 
  before 
  the 
  moth 
  is 
  disclosed. 
  

  

  Description 
  of 
  the 
  moth. 
  This 
  beautiful 
  insect, 
  with 
  a 
  wing-spread 
  

   of 
  from 
  three 
  and 
  one-half 
  inches 
  in 
  the 
  male 
  to 
  nearly 
  five 
  or 
  more 
  in 
  

   the 
  female, 
  ranks 
  among 
  the 
  largest 
  and 
  most 
  attractive 
  of 
  our 
  native 
  

   species. 
  The 
  purple 
  brown 
  markings 
  on 
  a 
  yellow 
  background 
  are 
  vari- 
  

   able 
  in 
  depth 
  of 
  color 
  and 
  in 
  extent. 
  The 
  following 
  areas 
  are 
  purple 
  

   brown 
  in 
  the 
  female 
  : 
  patagia 
  and 
  the 
  dorsum 
  of 
  the 
  thorax 
  lying 
  

   between 
  them; 
  the 
  dorsum 
  of 
  the 
  anterior 
  five 
  abdominal 
  segments 
  

   except 
  a 
  median 
  anterior 
  spot 
  on 
  each; 
  the 
  basal 
  fouith, 
  the 
  double 
  dis- 
  

  

  