﻿REPORT 
  OF 
  THE 
  STATE 
  ENTOMOLOGIST 
  I908 
  

  

  49 
  

  

  the 
  stirring 
  of 
  the 
  soil 
  when 
  the 
  majority 
  of 
  the 
  insects 
  are 
  in 
  the 
  

   pupal 
  stage. 
  Furthermore, 
  many 
  growers 
  have 
  sprayed 
  with 
  an 
  

   arsenical 
  poison, 
  and 
  this 
  treatment 
  has 
  undoubtedly 
  been 
  of 
  great 
  

   service 
  in 
  preventing 
  the 
  pest 
  from 
  becoming 
  unusually 
  abundant. 
  

   Severe 
  local 
  injuries 
  may 
  be 
  expected 
  in 
  the 
  future, 
  and 
  all 
  growers 
  

   are 
  advised 
  to 
  keep 
  a 
  close 
  watch 
  of 
  their 
  vineyards, 
  remembering 
  

   that 
  the 
  insect 
  may 
  be 
  very 
  destructive 
  in 
  one 
  portion 
  of 
  the 
  field 
  

   and 
  hardly 
  be 
  present 
  in 
  another. 
  

  

  Shade 
  tree 
  insects 
  

  

  Elm 
  leaf 
  miner 
  (K 
  a 
  1 
  i 
  o 
  s 
  y 
  s 
  p 
  h 
  i 
  n 
  g 
  a 
  u 
  1 
  m 
  i 
  Sund.) 
  . 
  The 
  

  

  injurious 
  work 
  of 
  this 
  European 
  

   ^ 
  species 
  was 
  first 
  observed 
  by 
  us 
  in 
  

  

  WL 
  this 
  country 
  in 
  1895, 
  and 
  a 
  brief 
  

  

  <^hL 
  notice 
  was 
  given 
  thereof 
  in 
  the 
  re- 
  

  

  l^^ll* 
  port 
  of 
  this 
  office 
  for 
  the 
  year 
  1898. 
  

  

  This 
  miner 
  was 
  at 
  that 
  time 
  very 
  

   injurious 
  to 
  Camperdown 
  elms 
  in 
  

   Washington 
  park, 
  though 
  its 
  oper- 
  

   ations 
  were 
  also 
  very 
  apparent 
  upon 
  

   Scotch 
  elms 
  and 
  were 
  less 
  extensive 
  

   upon 
  English 
  elms 
  in 
  both 
  Albany 
  

   and 
  Troy. 
  The 
  severe 
  injuries 
  of 
  

   earlier 
  years 
  have 
  been 
  somewhat 
  

   lessened 
  though 
  it 
  has 
  been 
  reported 
  

   from 
  other 
  sections 
  of 
  the 
  State. 
  A 
  

   few 
  years 
  ago 
  it 
  was 
  quite 
  destructive 
  

   to 
  elms 
  at 
  Ithaca, 
  N. 
  Y. 
  and 
  last 
  year 
  

   it 
  was 
  reported 
  as 
  being 
  very 
  in- 
  

   jurious 
  to 
  weeping 
  elms 
  at 
  Syracuse. 
  

   Complaints 
  of 
  its 
  ravages 
  were 
  also 
  

   received 
  from 
  Kenwood 
  near 
  Albany. 
  

   There 
  is 
  no 
  very 
  satisfactory 
  

   method 
  of 
  controlling 
  this 
  pest, 
  since 
  

   the 
  larvae 
  work 
  exclusively 
  between 
  

   the 
  upper 
  and 
  lower 
  epidermis, 
  de- 
  

   vouring 
  the 
  tender 
  parenchyma 
  and 
  making 
  a 
  rather 
  cliaracteristic, 
  

   irregular 
  blotched 
  mine. 
  The 
  insect 
  hibernates 
  within 
  a 
  cocoon 
  just 
  

   below 
  the 
  surface. 
  It 
  has 
  been 
  suggested 
  that 
  the 
  upper 
  layer 
  of 
  

   soil 
  might 
  be 
  removed 
  and 
  buried 
  at 
  some 
  depth. 
  Ordinarily 
  the 
  

  

  Fig. 
  14 
  

  

  Elm 
  leaf 
  miner 
  (author's 
  

   illustration) 
  

  

  