﻿PACKARD.] 
  THE 
  SPINDLE-WORM 
  THE 
  STALK-BORER. 
  719 
  

  

  Ou 
  tbe 
  protborax 
  is 
  a 
  long, 
  lozenge-sliaped, 
  smooth 
  black 
  median 
  area, 
  

   with 
  two 
  smooth 
  spots 
  ou 
  tbe 
  side 
  near 
  the 
  front 
  ; 
  these, 
  with 
  two 
  longer 
  

   diverging 
  spots 
  behind, 
  form 
  an 
  inverted 
  Y 
  on 
  each 
  side 
  of 
  the 
  body. 
  

   Behind 
  are 
  coarse 
  gray 
  punctures. 
  Tbe 
  wing-covers 
  are 
  marked 
  with 
  

   rows 
  of 
  coarse 
  punctures 
  along 
  the 
  stritie, 
  much 
  larger 
  than 
  those 
  on 
  the 
  

   thorax. 
  On 
  the 
  smooth 
  spaces 
  between 
  the 
  strine 
  is 
  a 
  row 
  of 
  more 
  or 
  

   less 
  crowded 
  minute 
  punctures. 
  On 
  the 
  base 
  of 
  the 
  elytra, 
  near 
  the 
  

   outer 
  edge, 
  is 
  a 
  low 
  smooth 
  tubercle, 
  and 
  a 
  larger 
  one 
  near 
  the 
  tip. 
  On 
  

   the 
  extreme 
  tip 
  of 
  the 
  abdomen, 
  near 
  the 
  elytra, 
  are 
  two 
  short 
  diverg- 
  

   ing 
  rows 
  of 
  fine 
  stiff 
  tawny 
  hairs, 
  which 
  stand 
  out 
  straight 
  from 
  the 
  

   end. 
  The 
  legs 
  are 
  black, 
  the 
  tarsi 
  reddish, 
  piceous. 
  Beneath, 
  the 
  body 
  

   is 
  black 
  and 
  widely 
  punctured. 
  It 
  measures 
  0.40 
  of 
  an 
  inch 
  in 
  length. 
  

   Remedies. 
  — 
  Until 
  we 
  know 
  more 
  of 
  its 
  habits, 
  its 
  mode 
  of 
  life 
  in 
  the 
  

   larva 
  stage, 
  and 
  its 
  native 
  food-plant, 
  we 
  are 
  at 
  a 
  loss 
  to 
  suggest 
  reme- 
  

   dies 
  against 
  the 
  attacks 
  of 
  this 
  insect. 
  When 
  the 
  corn 
  is 
  observed 
  to 
  

   be 
  suffering 
  from 
  their 
  punctures, 
  they 
  should 
  be 
  picked 
  oft' 
  with 
  the 
  

   hand, 
  and 
  the 
  young 
  blades 
  of 
  corn 
  carefully 
  watched. 
  These 
  weevils 
  

   are 
  so 
  large 
  as 
  to 
  be 
  readily 
  detected 
  after 
  a 
  little 
  practice. 
  

  

  The 
  Spindle- 
  Worm, 
  Achaiodes 
  zem 
  (Harris). 
  — 
  Boring 
  in. 
  the 
  stalk 
  before 
  the 
  corn- 
  

   spindles, 
  causing 
  the 
  leaves 
  to 
  wither, 
  a 
  caterpillar 
  an 
  inch 
  long, 
  smooth 
  aud 
  naked, 
  

   with 
  the 
  head 
  and 
  last 
  segment 
  black. 
  

  

  The 
  ravages 
  of 
  this 
  worm 
  generally 
  begin, 
  says 
  Harris, 
  " 
  while 
  the 
  

   corn-stalk 
  is 
  young, 
  aud 
  before 
  the 
  spindle 
  rises 
  much 
  above 
  the 
  tuft 
  of 
  

   leaves 
  in 
  which 
  it 
  is 
  embosomed. 
  The 
  mischief 
  is 
  discovered 
  by 
  the 
  

   withering 
  of 
  the 
  leaves, 
  and, 
  when 
  these 
  are 
  taken 
  hold 
  of, 
  they 
  may 
  

   often 
  be 
  drawn 
  out 
  with 
  the 
  included 
  spindle. 
  On 
  examining 
  the 
  corn, 
  

   a 
  small 
  hole 
  may 
  be 
  seen 
  in 
  the 
  side 
  of 
  the 
  leafy 
  stalk, 
  near 
  the 
  ground, 
  

   penetrating 
  into 
  the 
  soft 
  center 
  of 
  the 
  stalk, 
  which, 
  when 
  cut 
  open, 
  will 
  

   Idc 
  found 
  to 
  be 
  perforated, 
  both 
  upward 
  and 
  downward, 
  by 
  a 
  slender 
  

   AA^orm-like 
  caterpillar, 
  whose 
  excrementitious 
  castings 
  surround 
  the 
  ori- 
  

   fice 
  of 
  the 
  hole." 
  It 
  also 
  bores 
  into 
  the 
  stalks 
  of 
  the 
  dahlia 
  and 
  of 
  the 
  

   elder. 
  The 
  brown 
  chrysalis 
  is 
  rather 
  slender, 
  and 
  is 
  found 
  within 
  the 
  

   burrow 
  made 
  by 
  the 
  caterpillar. 
  

  

  Larva. 
  — 
  Smooth 
  and 
  apparently 
  naked, 
  yellowish, 
  with 
  the 
  head, 
  the 
  top 
  of 
  the 
  

   first 
  and 
  of 
  the 
  last 
  wings 
  black, 
  and 
  with 
  a 
  double 
  row, 
  across 
  each 
  of 
  the 
  other 
  rings, 
  

   of 
  small, 
  smooth, 
  slightly 
  elevated, 
  shining 
  black 
  dots. 
  

  

  Moth. 
  — 
  The 
  fore 
  wings 
  rust-red 
  ; 
  they 
  are 
  mottled 
  with 
  gray, 
  almost 
  in 
  bands, 
  

   uniting 
  with 
  the 
  ordinary 
  spots, 
  which 
  are 
  also 
  gray 
  and 
  indistinct 
  ; 
  there 
  is 
  an 
  irreg- 
  

   ular 
  tawny 
  spot 
  near 
  the 
  tip, 
  and 
  on 
  the 
  veins 
  there 
  are 
  a 
  few 
  black 
  dots. 
  The 
  hind 
  

   wings 
  are 
  yellowish-gray, 
  with 
  a 
  central 
  dusky 
  spot, 
  behind 
  which 
  are 
  two 
  faint, 
  dusky 
  

   bands. 
  The 
  head 
  and 
  thorax 
  are 
  rust-red, 
  with 
  an 
  elevated 
  tawny 
  tuft 
  on 
  each. 
  The 
  

   abdomen 
  is 
  pale 
  brown, 
  with 
  a 
  row 
  of 
  tawny 
  tufts 
  ou 
  the 
  back. 
  The 
  wings 
  expand 
  

   nearly 
  au 
  inch 
  aud 
  a 
  half. 
  — 
  (Harris.) 
  

  

  Remedies. 
  — 
  The 
  obvious 
  remedy 
  is, 
  when 
  the 
  leaves 
  are 
  seen 
  to 
  wither, 
  

   to 
  cut 
  open 
  the 
  stalk, 
  and, 
  on 
  finding 
  the 
  worm, 
  pull 
  all 
  the 
  infested 
  

   plants. 
  

  

  The 
  Stalk-Boker, 
  Goriyna 
  miella 
  Guenc^e 
  (Plate 
  LXV, 
  Fig. 
  6), 
  moth 
  and 
  caterpillar 
  

   Boring 
  in 
  the 
  stalks 
  of 
  corn, 
  j)otato, 
  tomato, 
  etc., 
  a 
  caterpillar 
  of 
  a 
  iiale, 
  livid 
  hue, 
  with 
  

   light 
  stripes 
  along 
  the 
  body; 
  also 
  sometimes 
  boring 
  into 
  the 
  cob 
  of 
  growing 
  Indian 
  

   corn. 
  

  

  This 
  borer 
  not 
  only 
  infests 
  corn 
  and 
  potatoes, 
  but 
  also 
  the 
  tomato 
  and 
  

   the 
  dahlia, 
  aster, 
  etc., 
  according 
  to 
  Eiley. 
  The 
  worm 
  is 
  not 
  found 
  in 
  

   the 
  Western 
  States 
  earlier 
  than 
  June 
  and 
  July, 
  and 
  the 
  moths 
  appear 
  

   late 
  in 
  August 
  and 
  early 
  in 
  September. 
  The 
  insect 
  is 
  probably 
  single- 
  

  

  