﻿PACKARD.] 
  

  

  THE 
  GRAPE 
  FORESTER. 
  785 
  

  

  the 
  use 
  of 
  resisting 
  American 
  vines 
  as 
  stocks, 
  and 
  this 
  is 
  undoubtedly 
  

   one 
  of 
  the 
  best 
  preventive 
  measures 
  which 
  can 
  be 
  adopted. 
  The 
  writer 
  

   would 
  like 
  to 
  know 
  bow 
  extensive 
  in 
  tbe 
  Eastern 
  States 
  is 
  the 
  distribu- 
  

   tion 
  of 
  the 
  phylloxera. 
  The 
  galls 
  are 
  at 
  once 
  recognizable, 
  and 
  appear 
  

   in 
  midsummer, 
  while 
  the 
  root-form 
  may 
  be 
  detected 
  by 
  little 
  swellings 
  on 
  

   the 
  rootlets, 
  in 
  which 
  the 
  small 
  greenish-yellow 
  lice 
  may 
  be 
  detected 
  

   after 
  close 
  examination. 
  

  

  The 
  following 
  recapitulation 
  of 
  the 
  different 
  forms 
  in 
  the 
  insect 
  is 
  

   taken 
  from 
  Professor 
  Eiley's 
  article 
  on 
  the 
  PhyoUexera 
  in 
  Johnson's 
  

   Cyclopedia 
  : 
  

  

  1. 
  The 
  gall-inhabiting 
  type 
  {galJce.cola'), 
  forming 
  galls 
  on 
  the 
  leaves, 
  and 
  presenting 
  — 
  

   a, 
  The 
  ordinary 
  egg 
  (Fig. 
  50, 
  c), 
  with 
  which 
  the 
  gall 
  is 
  crowded; 
  

  

  &, 
  The 
  ordinary 
  larva, 
  (Fig. 
  50, 
  a, 
  h); 
  

  

  c, 
  The 
  swollen 
  parthenogenetic 
  mother, 
  without 
  tubercles 
  (Fig. 
  50, 
  g, 
  h)', 
  

  

  2. 
  The 
  root-inhabiting 
  type 
  (radicicola), 
  forming 
  knots 
  on 
  the 
  roots, 
  and 
  presenting 
  — 
  

   a 
  a, 
  The 
  ordinary 
  egg, 
  differing 
  in 
  nothing 
  from 
  a, 
  except 
  in 
  its 
  slight 
  large 
  average 
  

  

  size 
  ; 
  

   b 
  &, 
  The 
  ordinary 
  larva, 
  also 
  differing 
  in 
  no 
  respect 
  from 
  h 
  ; 
  

  

  d, 
  The 
  parthenogenetic, 
  wingless 
  mother, 
  the 
  analogue 
  of 
  c, 
  but 
  covered 
  with 
  

   tubercles 
  (Fig. 
  55, 
  </,/); 
  

   e, 
  The 
  more 
  oval 
  form, 
  destined 
  to 
  become 
  winged 
  ; 
  

   /, 
  The 
  pupa, 
  (Plate 
  LXVIII, 
  Fig. 
  1 
  e) 
  ; 
  

  

  g, 
  The 
  winged, 
  parthenogenetic 
  female 
  (Plate 
  LXVIII, 
  Fig. 
  1 
  g, 
  li) 
  ; 
  

   h, 
  The 
  sexual 
  egg 
  deposited 
  by 
  g, 
  being 
  of 
  two 
  sizes, 
  and 
  giving 
  birth 
  

   to 
  the 
  two 
  males 
  and 
  females; 
  

   i, 
  The 
  male 
  (Plate 
  LXVIII, 
  Fig. 
  2 
  e) 
  ; 
  

   j, 
  The 
  true 
  female 
  (Plate 
  LXVIII, 
  Fig. 
  2, 
  a, 
  h) 
  ; 
  

   1c, 
  The 
  solitary 
  impregnated 
  egg 
  deposited 
  by 
  J; 
  

   bh 
  h, 
  The 
  larva 
  hatched 
  from 
  k, 
  which, 
  so 
  far 
  as 
  known, 
  does 
  not 
  differ 
  from 
  the 
  

   ordinary 
  larva, 
  except 
  in 
  its 
  greater 
  prolificacy; 
  

   ?, 
  The 
  hyberuating 
  laiva, 
  which 
  differs 
  only 
  from 
  b 
  in 
  being 
  

   rougher 
  and 
  darker. 
  

  

  The 
  Grape 
  Forester, 
  Alypia 
  ociomaculatuY&hv. 
  (Fig. 
  53). 
  — 
  Devouring 
  the 
  leases 
  j 
  

   bright 
  orange, 
  blue 
  and 
  jjlack 
  banded 
  caterpillars. 
  

  

  By 
  the 
  time 
  the 
  syringa 
  is 
  in 
  blossom, 
  the 
  eight-spotted, 
  or 
  grape- 
  

   forester 
  moth 
  flies 
  about. 
  It 
  is 
  easily 
  

   known 
  by 
  its 
  black 
  hue, 
  with 
  eigTit 
  large 
  

   spots 
  on 
  the 
  wings, 
  two 
  on 
  each 
  wing, 
  

   those 
  on 
  the 
  fore 
  wings 
  being 
  yellowish, 
  

   those 
  on 
  the 
  hind 
  wings 
  white. 
  The 
  cat- 
  

   erpillar 
  is 
  banded 
  with 
  whitisb-blue, 
  with 
  

   black 
  lines, 
  and 
  on 
  the 
  middle 
  of 
  each 
  

   segment 
  is 
  a 
  broader 
  orange-yellow 
  band 
  

   dotted 
  with 
  black, 
  with 
  a 
  conspicuous 
  

   white 
  spot 
  on 
  each 
  side 
  behind. 
  It 
  is 
  an 
  

   inch 
  and 
  a 
  quarter 
  long. 
  By 
  the 
  middle 
  

  

  of 
  July 
  it 
  becomes 
  fully 
  fed, 
  and 
  pupates 
  _ 
  ^^^ 
  

  

  in 
  slight 
  webs 
  on 
  the 
  ground 
  or 
  in 
  earthen 
  ^ 
  ^^^^>-^- 
  — 
  

   cocoons. 
  Hand-picking 
  is 
  the 
  best 
  rem-Fio. 
  53.— 
  The 
  Grape 
  Forester, 
  a, 
  

   edy. 
  This 
  insect 
  is 
  briefly 
  mentioned 
  here, 
  caterpillar 
  : 
  b, 
  side 
  view 
  of 
  aseg- 
  

   from 
  the 
  fact 
  that 
  a 
  similar 
  caterpillar 
  was 
  ™^^* 
  enlarged. 
  

   very 
  common 
  at 
  Golden, 
  Colo., 
  July 
  3, 
  1875, 
  on 
  the 
  wild 
  grapes 
  by 
  the 
  

   side 
  of 
  the 
  railroad, 
  and 
  when 
  the 
  cultivated 
  varieties 
  become 
  reared 
  

   extensively, 
  it 
  will 
  probably 
  transfer 
  its 
  afiections 
  from 
  the 
  wild 
  to 
  the 
  

   cultivated' 
  varieties. 
  The 
  caterpillars 
  of 
  several 
  species 
  of 
  similar 
  moths 
  

   which 
  occur 
  in 
  California, 
  the 
  genus 
  Alypia 
  being 
  more 
  numerously 
  

   represented 
  on 
  the 
  Pacific 
  coast 
  than 
  elsewhere, 
  may 
  ultimately 
  be 
  found 
  

   injurious 
  to 
  the 
  cultivated 
  grape. 
  

   50g 
  s 
  

  

  