﻿REPORT 
  ON 
  THE 
  ROCKY 
  MOUNTAIN 
  LOCUST 
  

  

  AND 
  OTHER 
  INSECTS 
  NOW 
  INJURING 
  OR 
  LIKELY 
  TO 
  INJURE 
  FIELD 
  AND 
  

   GARDEN 
  CROPS 
  IN 
  THE 
  WESTERN 
  STATES 
  AND 
  TERRITORIES. 
  

  

  By 
  a. 
  S. 
  Packard, 
  Jr., 
  M. 
  D. 
  

  

  LETTER 
  OF 
  TRANSMITTAL. 
  

  

  Peabody^ 
  Academy 
  of 
  Science, 
  

  

  Salem, 
  3Iass., 
  April 
  29, 
  1877. 
  

  

  Dear 
  Sir 
  : 
  I 
  herewith 
  present 
  a 
  report 
  on 
  the 
  Rocky 
  Mountain 
  lo- 
  

   cust 
  and 
  other 
  insects 
  injurious 
  to 
  the 
  field 
  and 
  garden 
  crops 
  of 
  the 
  

   Western 
  Territories, 
  including 
  a 
  few 
  injurious 
  species 
  found 
  on 
  the 
  Pa- 
  

   cificcoast, 
  which 
  section 
  of 
  our 
  Union 
  is 
  happily 
  remarkably 
  exempt 
  from 
  

   noxious 
  insects. 
  I 
  have 
  included 
  in 
  the 
  report 
  a 
  few 
  forms 
  found 
  injur- 
  

   ing 
  the 
  timber-trees 
  of 
  Colorado, 
  and 
  described 
  others, 
  which, 
  from 
  the 
  

   habits 
  of 
  their 
  allies 
  in 
  the 
  E.isteru 
  States, 
  will 
  undoubtedly 
  in 
  future 
  

   years 
  be 
  more 
  or 
  less 
  destructive. 
  I 
  have 
  also 
  introduced 
  accounts 
  

   of 
  certain 
  eastern 
  species 
  which 
  wijl 
  probably 
  from 
  time 
  to 
  time 
  be 
  

   transported 
  to 
  the 
  Western 
  States 
  and 
  Territories 
  east 
  of 
  the 
  great 
  plains. 
  

   Accounts 
  of 
  the 
  cotton 
  army-worui, 
  the 
  northern 
  army-worm, 
  as 
  well 
  

   as 
  the 
  tobacco-worm, 
  etc., 
  are 
  introduced 
  to 
  give 
  completeness 
  to 
  the 
  

   subject. 
  

  

  My 
  report 
  is 
  partly 
  based 
  on 
  the 
  results 
  obtained 
  in 
  Colorado, 
  Wyoming, 
  

   and 
  Utah, 
  while 
  attached 
  for 
  seven 
  weeks 
  to 
  your 
  survey, 
  late 
  in 
  June, 
  

   the. 
  whole 
  of 
  July, 
  and 
  early 
  in 
  August, 
  1875. 
  I 
  have 
  also 
  received 
  assist- 
  

   ance 
  from 
  Mr. 
  P. 
  R. 
  Uhler, 
  who, 
  as 
  a 
  member 
  of 
  your 
  Survey, 
  visited 
  

   Colorado 
  the 
  same 
  summer. 
  My 
  thanks 
  are 
  due 
  to 
  him 
  as 
  well 
  as 
  to 
  

   Mr. 
  William 
  N. 
  Byers, 
  of 
  Denver, 
  Colo., 
  editor 
  of 
  the 
  Rocky 
  Mount- 
  

   ain 
  Kews, 
  for 
  valuable 
  information 
  regarding 
  the 
  locust, 
  and 
  .also 
  

   to 
  Mr. 
  John 
  L. 
  Barfoot, 
  curator 
  of 
  the 
  Salt 
  Lake 
  Museum, 
  for 
  notes 
  

   on 
  destructive 
  insects 
  in 
  Utah. 
  Acknowledgments 
  and 
  thanks 
  are 
  due 
  

   to 
  other 
  gentlemen 
  whose 
  names 
  are 
  mentioned 
  in 
  the 
  following 
  pages. 
  

  

  Some 
  of 
  the 
  matter 
  relating 
  especially 
  to 
  eastern 
  insects 
  is 
  taken 
  

   from 
  my 
  own 
  notes 
  made 
  for 
  a 
  number 
  of 
  years 
  past 
  in 
  Maine 
  and 
  

   Massachusetts. 
  I 
  should 
  also 
  acknowledge 
  the 
  important 
  information 
  

   and 
  illustrations 
  derived 
  from 
  the 
  nine 
  annual 
  reports 
  of 
  Prof. 
  C. 
  V. 
  

   Riley, 
  State 
  entomologist 
  of 
  Missouri 
  ; 
  from 
  the 
  fourteen 
  annual 
  reports 
  

   of 
  Dr. 
  Asa 
  Fitch, 
  State 
  entomologist 
  of 
  ISTew 
  York 
  ; 
  as 
  well 
  as 
  Harris's 
  

   "Treatise 
  on 
  the 
  Injurious 
  Insects 
  of 
  Massachusetts." 
  Some 
  of 
  the 
  

   facts 
  and 
  a 
  large 
  proportion 
  of 
  the 
  illustrations 
  are 
  taken 
  from 
  my 
  

   "Guide 
  to 
  the 
  Study 
  of 
  Insects," 
  published 
  by 
  Henry 
  Holt 
  & 
  Co., 
  New 
  

   York, 
  and 
  from 
  the 
  "American 
  Naturalist." 
  

  

  In 
  preparing 
  the 
  accounts 
  of 
  the 
  Hessian 
  fly, 
  wheat-midge, 
  the 
  wheat 
  

   joint-worm, 
  and 
  chinch-bug, 
  as 
  well 
  as 
  the 
  cotton 
  army-worm, 
  I 
  became 
  

   painfully 
  aware 
  of 
  the 
  unreliable 
  and 
  fragmentary 
  nature 
  of 
  our 
  knowl- 
  

   edge 
  of 
  the 
  distribution 
  and 
  habits 
  of 
  these 
  insects, 
  and 
  of 
  the 
  great 
  need 
  

   of 
  a 
  systematic 
  and 
  thorough 
  inquiry 
  into 
  their 
  natural 
  history. 
  

  

  589 
  

  

  