﻿170 
  REPORT 
  UNITED 
  STATES 
  ENTOMOLOGICAL 
  COMMISSION. 
  

  

  in 
  May 
  and 
  June, 
  1871, 
  from 
  I^orfolk 
  County, 
  Massachusetts, 
  and 
  from 
  

   Jefferson 
  County, 
  lowa.^^ 
  Eeports 
  of 
  the 
  ravages 
  of 
  '' 
  black 
  measuring 
  

   worms," 
  which 
  may 
  have 
  been 
  Canker 
  Worms, 
  on 
  apple 
  and 
  fruit 
  trees, 
  

   were 
  also 
  sent 
  to 
  the 
  United 
  States 
  Department 
  of 
  Agriculture, 
  at 
  the 
  

   same 
  time, 
  from 
  several 
  counties 
  in 
  Ohio. 
  

  

  They 
  are 
  rei3orted 
  to 
  have 
  infested 
  a 
  few 
  orchards 
  in 
  Plymouth, 
  Mass., 
  

   in 
  1874.84 
  

  

  E. 
  Ware 
  Sylvester 
  states, 
  in 
  1874, 
  that 
  Anisopteryx 
  pometaria 
  has 
  

   nearly 
  disappeared 
  from 
  his 
  neighborhood 
  [locality 
  unknown], 
  * 
  * 
  * 
  

   the 
  very 
  geueral 
  failure 
  to 
  put 
  in 
  an 
  appearance 
  being 
  due 
  to 
  some 
  

   cause 
  not 
  human. 
  ^ 
  

  

  Dr. 
  Packard, 
  referring 
  presumably 
  to 
  the 
  years 
  about 
  1860 
  and 
  pre- 
  

   viously^, 
  says 
  that 
  during 
  several 
  years' 
  observations 
  he 
  had 
  never 
  ob- 
  

   served 
  vernata 
  in 
  Brunswick, 
  Me., 
  but 
  in 
  1875 
  it 
  was 
  said 
  to 
  be 
  for 
  

   the 
  first 
  time 
  injurious 
  in 
  orchards 
  in 
  that 
  town.^^ 
  

  

  Prof. 
  A. 
  J. 
  Cook 
  said, 
  in 
  1875,^^ 
  that 
  " 
  this 
  insect 
  [vernata] 
  has 
  a 
  

   curious 
  history 
  in 
  Michigan 
  ; 
  for 
  though 
  it 
  has 
  made 
  its 
  appearance 
  

   several 
  times, 
  once 
  in 
  Calhoun 
  County, 
  again 
  in 
  Genesee 
  County 
  and 
  in 
  

   other 
  places, 
  for 
  the 
  past 
  two 
  or 
  three 
  years 
  near 
  Commerce, 
  Oakland 
  

   County, 
  and 
  just 
  now 
  near 
  Pontiac 
  of 
  the 
  same 
  county, 
  still 
  it 
  has 
  never 
  

   seemed 
  to 
  hold 
  on; 
  for, 
  after 
  destroying 
  a 
  few 
  orchards, 
  it 
  seems 
  to 
  suc- 
  

   cumb 
  to 
  its 
  natural 
  enemies 
  or 
  unpropitious 
  circumstances, 
  and 
  ceases 
  

   to 
  cause 
  even 
  anxiety." 
  

  

  THE 
  SPRING 
  CANKER 
  WORM. 
  

  

  {Paleacrita 
  vernata. 
  Peck.) 
  

  

  The 
  true 
  Canker 
  Worm, 
  described 
  as 
  Fhalcena 
  vernatahy 
  W. 
  D. 
  Peck, 
  

   in 
  1795, 
  may 
  be 
  known, 
  as 
  already 
  indicated 
  (p. 
  164), 
  by 
  the 
  popular 
  

   name 
  given 
  above, 
  from 
  the 
  circumstance 
  that 
  the 
  great 
  bulk 
  of 
  moths 
  

   issue 
  from 
  the 
  -ground 
  in 
  early 
  spring. 
  

  

  This 
  is 
  undoubtedly 
  the 
  species 
  generally 
  mentioned 
  iu 
  the 
  agricultural 
  

   journals 
  of 
  the 
  country, 
  and 
  is 
  the 
  one 
  treated 
  of 
  in 
  our 
  Second 
  report 
  on 
  

   the 
  insects 
  of 
  Missouri 
  as 
  so 
  injuriously 
  aff'ecting 
  the 
  apple 
  orchards 
  of 
  

   Missouri 
  and 
  the 
  States 
  to 
  the 
  north 
  and 
  east 
  of 
  it. 
  

  

  KANGE 
  OF 
  THE 
  SPECIES. 
  

  

  Formerly 
  most 
  abundant 
  in 
  New 
  England, 
  this 
  Canker 
  Worm 
  <s 
  now 
  

   found 
  in 
  many 
  portions 
  of 
  the 
  country, 
  and 
  of 
  late 
  years 
  has 
  been 
  particu- 
  

   larly 
  injurious 
  in 
  the 
  JSTorthern 
  Central 
  States. 
  Its 
  rauge 
  may 
  be 
  said 
  to 
  

   extend 
  from 
  Maine 
  to 
  New 
  Jersey 
  and 
  westward 
  to 
  Wisconsin 
  and 
  south- 
  

   ward 
  in 
  the 
  Mississippi 
  Yalley 
  to 
  Texas. 
  It 
  is 
  in 
  fact 
  the 
  species 
  best 
  

   known 
  in 
  the 
  Mississippi 
  Valley, 
  if 
  not 
  the 
  only 
  species 
  which 
  occurs 
  

  

  83 
  Monthly 
  Kepts. 
  [U. 
  S.] 
  Dept. 
  Agiic, 
  for 
  1871, 
  pp. 
  194-195. 
  

   M 
  Monthly 
  Kepts. 
  [U. 
  S.] 
  Dept. 
  Agric, 
  for 
  1874, 
  p. 
  329. 
  

  

  85 
  Packard, 
  Alonogr. 
  of 
  Geom. 
  Moths, 
  p. 
  404. 
  

  

  86 
  Prairie 
  Farmer, 
  July 
  3, 
  1875. 
  

  

  