﻿REPORT 
  OF 
  THE 
  STATE 
  ENTOMOLOGIST 
  IQoS 
  1 
  5 
  

  

  Remedial 
  measures. 
  This 
  leaf 
  feeder 
  should 
  be 
  easily 
  con- 
  

   trolled 
  by 
  timely 
  applications 
  of 
  an 
  arsenical 
  poison, 
  preferably 
  

   arsenate 
  of 
  lead. 
  

  

  Bibliography 
  

  

  1888 
  Lintner, 
  J. 
  A. 
  Ins. 
  N. 
  Y. 
  4th 
  Rep't, 
  p. 
  44-46. 
  (Brief 
  account, 
  as 
  

   Aulacomerus 
  lutescens) 
  

  

  1889 
  Ins. 
  N. 
  Y. 
  7th 
  Rep't, 
  p. 
  223-24. 
  (Synonym}^, 
  as 
  Aula- 
  

  

  ccmerus 
  lutescens) 
  

  

  1906 
  Felt, 
  E. 
  P. 
  N. 
  Y. 
  State 
  Mus. 
  Mem. 
  8, 
  2:568-69. 
  (General 
  account) 
  

  

  I 
  

   Grape 
  blossom 
  midge 
  

  

  Contarinia 
  johnsoni 
  Sling. 
  

  

  The 
  work 
  of 
  this 
  little 
  midge 
  has 
  been 
  observed 
  here 
  and 
  there 
  

   in 
  Chautauqua 
  vineyards 
  for 
  the 
  last 
  four 
  years. 
  The 
  enlarged 
  

   blossom 
  buds, 
  infested 
  by 
  maggots, 
  have 
  been 
  found 
  in 
  small 
  

   numbers 
  each 
  spring. 
  Nothing 
  was 
  known 
  as 
  to 
  the 
  source 
  of 
  

   these 
  little 
  pests, 
  aside 
  from 
  the 
  fact 
  that 
  they 
  were 
  produced 
  by 
  

   some 
  small 
  fly. 
  It 
  was 
  not 
  till 
  the 
  spring 
  of 
  1909 
  that 
  we 
  were 
  

   enabled 
  to 
  rear 
  this 
  insect 
  and 
  show 
  that 
  it 
  belonged 
  to 
  the 
  genus 
  

   Contarinia 
  and 
  has 
  as 
  allies 
  several 
  destructive 
  species. 
  One 
  closely 
  

   related 
  form, 
  Contarinia 
  viol 
  i 
  cola 
  Coq., 
  has 
  proved 
  very 
  

   injurious 
  to 
  the 
  extensive 
  violet-growing 
  industry 
  located 
  at 
  Rhine- 
  

   cliff, 
  N. 
  Y. 
  Another 
  member 
  of 
  this 
  genus, 
  Contarinia 
  

   pyrivora 
  Riley, 
  is 
  well 
  known 
  on 
  account 
  of 
  its 
  destroying- 
  

   young 
  pears. 
  A 
  third 
  form, 
  Contarinia 
  s 
  o 
  r 
  g 
  h 
  i 
  c 
  o 
  1 
  a 
  

   Coq., 
  infests 
  sorghum 
  in 
  the 
  South 
  and 
  causes 
  a 
  serious 
  shrinkage 
  

   in 
  the 
  production 
  of 
  seed, 
  while 
  a 
  West 
  Indian 
  species, 
  Conta- 
  

   rinia 
  gossypii 
  Felt, 
  is 
  injurious 
  to 
  cotton. 
  In 
  addition, 
  

   Contarinia 
  viticola 
  Riibs., 
  which 
  further 
  study 
  may 
  show 
  

   to 
  be 
  identical 
  with 
  the 
  species 
  attacking 
  grape 
  blossoms 
  in 
  the 
  

   Chautauqua 
  region, 
  has 
  been 
  recorded 
  as 
  injurious 
  to 
  grape 
  blos- 
  

   soms 
  in 
  Europe 
  by 
  Riibsaamen,'' 
  a 
  noted 
  authority 
  upon 
  this 
  group. 
  

  

  Injuries. 
  The 
  grape 
  blossom 
  midge 
  of 
  the 
  Chautauqua 
  region 
  

   was 
  first 
  observed 
  in 
  scattering 
  numbers 
  by 
  the 
  late 
  Professor 
  

   Slingerland 
  and 
  Fred 
  Johnson 
  in 
  1904, 
  at 
  which 
  time 
  it 
  was 
  re- 
  

   corded 
  from 
  the 
  towns 
  of 
  Ripley, 
  Westfield, 
  Portland 
  and 
  Brocton. 
  

   It 
  has 
  occurred 
  in 
  small 
  numbers 
  from 
  year 
  to 
  year 
  since 
  then, 
  and 
  

   in 
  1908 
  aroused 
  considerable 
  apprehension 
  among 
  growers 
  on 
  ac- 
  

  

  * 
  1906 
  Riibsaamen, 
  E. 
  H. 
  Zeitschrift 
  fiir 
  Wisscnschaftliche 
  Insekten- 
  

   biologie, 
  2:194-98. 
  

  

  1909 
  Die 
  Wichtigsten 
  deutschen 
  Reben-Schadlinge 
  und 
  Reben- 
  

  

  Niitzlinge, 
  p. 
  74-76. 
  

  

  