﻿DESCRIPTION. 
  

  

  13 
  

  

  THE 
  FULL-GROWN 
  NYMPH 
  OR 
  PUPA. 
  

  

  (Fig. 
  7.) 
  

  

  Length, 
  0.99-1.09 
  mm. 
  ; 
  width 
  at 
  mesothoracic 
  angles, 
  0.24-0.255 
  mm. 
  Shape 
  

   similar 
  to 
  that 
  of 
  adult. 
  Color 
  orange; 
  posterior 
  border 
  of 
  prothorax, 
  

   mesothoracic 
  angles, 
  sides, 
  and 
  abdominal 
  segments 
  2, 
  3, 
  6, 
  and 
  7 
  more 
  or 
  less 
  

   crimson. 
  Head, 
  length, 
  0.11 
  mm.; 
  width, 
  0.18 
  mm.; 
  orange, 
  apparently 
  faintly 
  

   reticulated 
  ; 
  eyes 
  dark 
  red, 
  larger 
  than 
  in 
  prepupal 
  stage, 
  facets 
  small. 
  Three 
  

   ocelli 
  present 
  in 
  close 
  triangle 
  between 
  eyes, 
  in 
  color 
  yellow. 
  Antennae 
  laid 
  

   backward 
  on 
  head 
  and 
  reaching 
  to 
  beyond 
  middle 
  of 
  prothorax; 
  segments 
  in- 
  

   distinct, 
  translucent 
  white; 
  

   segments 
  1 
  and 
  2 
  projecting 
  

   in 
  front 
  of 
  the 
  head 
  and 
  2 
  

   with 
  four 
  setae 
  or 
  hairs, 
  two 
  

   extending 
  forward, 
  about 
  

   0.0135 
  mm. 
  in 
  length. 
  Tho- 
  

   rax 
  light 
  orange 
  or 
  yellow. 
  

   Prothorax 
  about 
  twice 
  as 
  

   wide 
  as 
  long. 
  Wing-cases 
  

   0.54 
  mm. 
  long, 
  extending 
  to 
  

   seventh 
  abdominal 
  segment, 
  

   translucent 
  white. 
  Length 
  

   from 
  head 
  to 
  end 
  of 
  wing- 
  

   pads, 
  0.S25 
  mm. 
  Legs 
  trans- 
  

   lucent 
  white. 
  Abdomen 
  

   fusiform, 
  similar 
  to 
  adult, 
  

   surface 
  plainly 
  reticulated 
  

   in 
  older 
  specimens, 
  setae 
  

   well 
  developed, 
  the 
  longest 
  

   ones 
  at 
  posterior 
  end. 
  

   Length 
  of 
  abdomen, 
  0.612 
  

   nun. 
  ; 
  width, 
  0.31 
  mm. 
  ; 
  

   length 
  of 
  posterior 
  seta?, 
  

   0.0S5 
  mm. 
  

  

  The 
  younger 
  stages 
  of 
  this 
  

   insect 
  differ 
  distinctly 
  from 
  

   Ihose 
  of 
  II. 
  Iian'orrhoidalis 
  1 
  

   in 
  the 
  dashes 
  of 
  crimson 
  so 
  

   generally 
  present 
  on 
  the 
  

   sides. 
  

  

  The 
  pupa 
  of 
  the 
  male 
  

   is 
  shorter 
  and 
  more 
  slen- 
  

   der 
  than 
  that 
  of 
  the 
  fe- 
  

   male. 
  This 
  pupa 
  differs 
  

   from 
  II. 
  hwmorrhoidalis 
  in 
  its 
  smaller 
  size, 
  in 
  its 
  } 
  T 
  ellow 
  color, 
  with 
  

   the 
  sides 
  of 
  the 
  abdomen 
  more 
  or 
  less 
  stained 
  with 
  crimson, 
  and 
  in 
  

   having 
  the 
  hairs 
  of 
  the 
  body 
  longer 
  and 
  the 
  second 
  segment 
  of 
  the 
  

   antenna' 
  with 
  two 
  long 
  seta*. 
  

  

  The 
  foregoing 
  descriptions 
  are 
  for 
  the 
  parts 
  of 
  California 
  in 
  Los 
  

   Angeles 
  County 
  and 
  more 
  northern 
  points, 
  for 
  Mr. 
  Wildermuth 
  

  

  % 
  

  

  ^ 
  1 
  

  

  /. 
  

  

  t.r 
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  % 
  jH>1« 
  

   M 
  ■ifitf'M 
  

  

  

  w 
  

  

  Fig. 
  7. 
  — 
  The 
  

  

  bean 
  thrips 
  : 
  Pupa. 
  

   (Original.) 
  

  

  Greatly 
  enlarged. 
  

  

  1 
  For 
  description 
  of 
  HeUoihrlpe 
  hamorrho4daUa, 
  see 
  ' 
  

   Part 
  VI. 
  Bnr. 
  Ent., 
  V. 
  s. 
  Dept. 
  Agr., 
  pp. 
  16 
  18, 
  1900. 
  

  

  The 
  Greenhouse 
  Thrips," 
  Bui. 
  04. 
  

  

  