﻿TENT 
  CATERPILLAR 
  — 
  SNODGRASS. 
  

  

  353 
  

  

  Fig 
  17.— 
  A, 
  the 
  mature 
  caterpillar, 
  showing 
  the 
  head 
  (H) 
  and 
  13 
  body 
  segments, 
  the 
  

   'jointed 
  legs 
  (L) 
  on 
  the 
  three 
  thoracic 
  segments, 
  the 
  abdominal 
  legs 
  UL)on 
  the 
  

   third 
  to 
  sixth 
  and 
  the 
  tenth 
  abdominal 
  segments, 
  and 
  the 
  breathing 
  pores 
  or 
  spiracles 
  

   (Sp) 
  along 
  the 
  side 
  of 
  the 
  body. 
  . 
  • 
  

  

  B, 
  the 
  contracted 
  prepupal 
  stage 
  of 
  the 
  caterpillar 
  in 
  the 
  cocoon. 
  ... 
  . 
  _. 
  

  

  C 
  the 
  propupa 
  extended 
  after 
  artificial 
  removal 
  of 
  the 
  prepupal 
  caterpillar 
  skin, 
  ine 
  

   antp'nnae 
  (Ant), 
  wings 
  (W), 
  and 
  legs 
  (L) 
  are 
  all 
  free 
  appendages. 
  

  

  D. 
  the 
  pupa, 
  the 
  form 
  of 
  the 
  insect 
  when 
  the 
  prepupal 
  caterpillar 
  skin 
  is 
  shed 
  nor- 
  

   mally. 
  The 
  appendages 
  are 
  all 
  glued 
  fast 
  to 
  the 
  hard 
  shell-like 
  body 
  wall. 
  

  

  E. 
  the 
  empty 
  pupal 
  skin 
  and 
  the 
  newly 
  emerged 
  moth. 
  

  

  F. 
  a 
  thoracic 
  leg 
  of 
  the 
  caterpillar. 
  Ox, 
  coxa; 
  F, 
  femur; 
  Tar, 
  tarsus; 
  Tb, 
  tibia, 
  Tr, 
  

  

  ^(^corresponding 
  leg 
  of 
  the 
  propupa. 
  Only 
  the 
  tarsus 
  (Tar) 
  develops 
  in 
  the 
  leg 
  of 
  

  

  the 
  H 
  Ca 
  the 
  P 
  head 
  of 
  the 
  propupa, 
  under 
  view. 
  Ant, 
  antenna 
  ; 
  E, 
  eye 
  ; 
  LbPlp, 
  labial 
  palpi 
  ; 
  

   Lm, 
  'labrum; 
  Md, 
  rudiment 
  of 
  mandible; 
  Mth, 
  mouth; 
  Mx, 
  maxilla. 
  

  

  I, 
  under 
  view 
  of 
  front 
  half 
  of 
  the 
  pupa. 
  Lettering 
  as 
  in 
  H 
  ; 
  also 
  in. 
  Li, 
  ^a. 
  legs 
  , 
  

   W 
  s 
  , 
  W», 
  wings. 
  

  

  