﻿SCALE 
  INSECTS 
  OF 
  IMPORTANCE 
  365 
  

  

  fTIG. 
  

  

  e^ 
  e, 
  e, 
  e, 
  e, 
  e, 
  e, 
  e 
  chitinous 
  processes, 
  or 
  thickened 
  margins 
  of 
  incisions 
  

  

  / 
  general 
  thickening 
  inward 
  of 
  body 
  wall 
  

  

  gj 
  g, 
  g 
  ventral 
  grouped 
  glands, 
  or 
  spinnerets 
  

  

  h 
  ventral 
  chitinous 
  thickening 
  

  

  i 
  vagina 
  

  

  k, 
  k 
  transverse 
  chitinous 
  thickenings 
  of 
  dorsal 
  wall 
  

  

  /, 
  /, 
  /, 
  / 
  dorsal 
  pores, 
  showing 
  different 
  appearances 
  seen 
  in 
  focusing 
  

  

  771, 
  771 
  wax 
  ducts, 
  within 
  body 
  

  

  71 
  anus 
  

   2 
  Aspidiotus 
  ancylus 
  Putnam, 
  adult 
  female. 
  Note 
  fringing 
  

   plates, 
  the 
  single 
  pair 
  of 
  lobes, 
  and 
  the 
  linear 
  arrangement 
  of 
  

   ventral 
  glands. 
  Compare 
  with 
  A. 
  ostreaeformis, 
  plate 
  i4» 
  

  

  PLATE 
  12 
  

  

  IG. 
  

  

  1 
  Aspidiotus 
  forbesi 
  Johnson, 
  adult 
  female. 
  Note 
  chitinous 
  

  

  thickenings 
  and 
  form 
  of 
  lobes. 
  Compare 
  with 
  figure 
  2. 
  

  

  2 
  Aspidiotus 
  perniciosus 
  Comstock, 
  adult 
  female. 
  Ventral 
  

  

  glands 
  are 
  absent. 
  Note 
  plates. 
  

  

  PLATE 
  13 
  

  

  PIG. 
  

  

  1 
  Aspidiotus 
  forbesi 
  Johnson, 
  second 
  stage. 
  Compare 
  with 
  

  

  adult, 
  plate 
  12, 
  figure 
  i, 
  and 
  with 
  A. 
  perniciosus, 
  second 
  

   stage, 
  on 
  plate 
  with 
  it. 
  

  

  2 
  Aspidiotus 
  perniciosus 
  Comstock, 
  second 
  stage. 
  Com- 
  

  

  pare 
  with 
  adult, 
  plate 
  12, 
  figure 
  2. 
  

  

  PLATE 
  14 
  

   Aspidiotus 
  ostreaeformis 
  Curtis, 
  adult 
  female. 
  Note 
  form 
  

   of 
  second 
  lobes 
  and 
  grouping 
  of 
  ventral 
  glands. 
  Compare 
  with 
  

   A. 
  ancylus, 
  plate 
  11, 
  figure 
  2, 
  and 
  with 
  the 
  other 
  species 
  figured. 
  

  

  PLATE 
  15 
  

  

  FIG. 
  

  

  I. 
  Aspidiotus 
  ancylus 
  Putnam, 
  second 
  stage. 
  Note 
  plates 
  in 
  

   comparison 
  with 
  A. 
  ostreaeformis 
  at 
  figure 
  2. 
  Compare 
  

   also 
  with 
  adult, 
  plate 
  11, 
  figure 
  2. 
  

  

  2 
  Aspidiotus 
  ostreaeformis 
  Curtis, 
  second 
  stage. 
  Com- 
  

   pare 
  with 
  adult, 
  plate 
  14. 
  

  

  