﻿REPORT 
  OF 
  THE 
  STATE 
  ENTOMOLOGIST 
  20$ 
  

  

  In 
  their 
  marches 
  the 
  caterpillars 
  move, 
  so 
  far 
  as 
  possible, 
  in 
  a 
  nearly 
  

   straight 
  line, 
  turning 
  aside 
  for 
  nothing 
  that 
  can 
  be 
  surmounted. 
  It 
  has 
  

   even 
  been 
  stated 
  that 
  they 
  will 
  climb 
  the 
  trunk 
  of 
  a 
  tree 
  to 
  the 
  lowest 
  

   fork 
  and 
  descend 
  on 
  the 
  other 
  side. 
  A 
  number 
  of 
  instances 
  have 
  been 
  

   reported 
  in 
  which 
  they 
  marched 
  over 
  buildings, 
  where 
  in 
  some 
  instances 
  

   they 
  were 
  so 
  thick 
  as 
  to 
  cover 
  the 
  sides 
  of 
  the 
  structure. 
  They 
  cun 
  not 
  

   bear 
  the 
  hot 
  sun, 
  and 
  so 
  far 
  as 
  possible, 
  avoid 
  it 
  in 
  their 
  travels, 
  and 
  

   after 
  crossing 
  a 
  sunny 
  field 
  they 
  may 
  be 
  seen 
  resting 
  in 
  the 
  shade 
  of 
  

   fences 
  or 
  shrubbery 
  that 
  may 
  offer 
  the 
  desired 
  relief. 
  Water 
  does 
  not 
  

   deter 
  them. 
  The 
  rear 
  ones 
  push 
  forward 
  over 
  the 
  bridge 
  formed 
  by 
  the 
  

   dead 
  and 
  dying 
  of 
  the 
  vanguard: 
  if 
  it 
  be 
  a 
  large 
  running 
  stream 
  they 
  

   perish 
  by 
  the 
  raiiiions. 
  Their 
  march 
  is 
  not 
  a 
  very 
  rapid 
  one; 
  it 
  has 
  been 
  

   computed 
  at, 
  ordinarily, 
  the 
  rate 
  of 
  30 
  yards 
  an 
  hour. 
  

  

  Occasionally 
  it 
  happens, 
  that 
  the 
  army-worm 
  will 
  migrate 
  from 
  the 
  

   fields 
  for 
  the 
  sole 
  purpose 
  of 
  finding 
  a 
  suitable 
  place 
  for 
  pupation, 
  as 
  in 
  

   instances 
  when 
  there 
  is 
  abundant 
  food 
  in 
  a 
  grain 
  field, 
  but 
  the 
  soil 
  is 
  too 
  

   hard 
  for 
  the 
  caterpillars 
  to 
  bury 
  in 
  easily. 
  This 
  was 
  noticed 
  to 
  a 
  limited 
  

   extent 
  in 
  the 
  outskirts 
  of 
  Albany, 
  where 
  after 
  partly 
  stripping 
  the 
  leaves 
  

   in 
  an 
  oat 
  field, 
  the 
  caterpillars 
  in 
  migrating, 
  inflicted 
  little 
  damage 
  to 
  a 
  

   corn 
  and 
  grass 
  field 
  adjacent, 
  but 
  later 
  their 
  pupse 
  were 
  found 
  in 
  abund- 
  

   ance 
  under 
  the 
  leaves 
  and 
  grasses 
  beside 
  the 
  outer 
  fence 
  — 
  35 
  being 
  

   counted 
  within 
  an 
  area 
  of 
  about 
  two 
  square 
  feet. 
  

  

  Associates. 
  — 
  It 
  is 
  not 
  an 
  uncommon 
  occurrence, 
  that 
  cut-worms 
  are 
  

  

  associated 
  with 
  the 
  army-worm 
  in 
  its 
  ravages. 
  In 
  the 
  nth 
  Illinois 
  

  

  Report, 
  Mr. 
  Coquillett 
  records 
  the 
  presence 
  of 
  Agrolis 
  c-fiignifn 
  in 
  an 
  

  

  army-worm 
  attack, 
  in 
  the 
  proportion 
  of 
  one 
  cut- 
  worm 
  to 
  eight 
  or 
  ten 
  

  

  army-worms, 
  while 
  Dr. 
  Howard 
  found 
  the 
  proportion 
  to 
  be 
  as 
  high 
  as 
  

  

  one 
  to 
  five.* 
  A 
  single 
  example 
  of 
  Agrotis 
  ypsi/oji, 
  was 
  detected 
  in 
  a 
  

  

  lot 
  of 
  over 
  100 
  army-worms 
  received 
  from 
  Ghent, 
  N. 
  Y., 
  early 
  in 
  October 
  

  

  of 
  the 
  past 
  year. 
  

  

  Food 
  of 
  the 
  Caterpillars. 
  

  

  The 
  favorite 
  food 
  of 
  the 
  army-worm 
  is 
  undoubtedly, 
  the 
  green 
  succulent 
  

   leaves 
  of 
  a 
  luxuriant 
  growth 
  of 
  some 
  member 
  of 
  the 
  true 
  grass 
  family^ 
  

   the 
  Graminece. 
  In 
  fields 
  of 
  small 
  grain, 
  the 
  greener 
  leaves 
  are 
  quickly 
  

   stripped 
  from 
  the 
  stalk, 
  and, 
  if 
  the 
  stem 
  is 
  not 
  too 
  hard, 
  the 
  heads 
  will 
  

   frequently 
  be 
  eaten 
  off 
  and 
  fall 
  to 
  the 
  ground. 
  Occasionally, 
  the 
  heads 
  

   are 
  partly 
  eaten 
  after 
  they 
  they 
  have 
  been 
  lopped 
  off, 
  but 
  more 
  fre- 
  

   quently 
  they 
  are 
  left 
  untouched 
  by 
  the 
  caterpillars. 
  This 
  wanton 
  habit 
  

   of 
  the 
  army-worm, 
  increases 
  its 
  harmfulness 
  in 
  grain 
  fields, 
  without 
  any 
  

  

  *In 
  y^d 
  Rept. 
  U, 
  S. 
  Entomological 
  Commission 
  1883, 
  p. 
  135. 
  

  

  