﻿REPORT 
  OF 
  THE 
  STATE 
  ENTOMOLOGIST 
  363 
  

  

  Drepanosiphum 
  acerifolii 
  Thos. 
  This 
  beautiful 
  species 
  occurred 
  

   quite 
  commonly 
  in 
  small 
  numbers 
  on 
  the 
  tender 
  leaves 
  and 
  growing 
  tips 
  

   of 
  the 
  silver 
  or 
  white 
  maple, 
  Acer 
  dasycarpuin. 
  It 
  was 
  rarely 
  sufficiently 
  

   abundant 
  to 
  cause 
  any 
  material 
  harm., 
  and 
  is 
  mainly 
  interesting 
  on 
  account 
  

   of 
  its 
  beauty 
  and 
  comparative 
  rarity. 
  

  

  Aphis 
  mali 
  Fabr. 
  The 
  apple-tree 
  aphis 
  was 
  extremely 
  abundant 
  in 
  

   many 
  localities 
  in 
  the 
  state, 
  early 
  in 
  the 
  season, 
  but 
  in 
  most 
  cases 
  the 
  

   ravages 
  of 
  this 
  pest 
  were 
  checked 
  by 
  its 
  natural 
  enemies 
  before 
  any 
  

   extensive 
  damage 
  was 
  caused. 
  In 
  the 
  nursery 
  center 
  of 
  Rochester 
  and 
  

   vicinity, 
  the 
  unusual 
  multiplication 
  of 
  this 
  insect 
  imposed 
  a 
  large 
  amount 
  

   of 
  work 
  on 
  those 
  starting 
  young 
  trees. 
  In 
  some 
  instances 
  it 
  was 
  found 
  

   necessary 
  to 
  treat 
  the 
  young 
  stock 
  growing 
  from 
  grafts 
  two 
  or 
  even 
  three 
  

   times 
  with 
  kerosene 
  emulsion, 
  whale 
  oil 
  soap 
  solution 
  or 
  tobacco 
  water 
  in 
  

   order 
  to 
  keep 
  the 
  pests 
  under 
  control. 
  Most 
  of 
  the 
  nurserymen 
  found 
  

   the 
  dipping 
  of 
  the 
  slender 
  trees 
  into 
  a 
  vessel 
  of 
  the 
  insecticide 
  an 
  easier 
  

   and 
  more 
  effective 
  method 
  than 
  spraying. 
  

  

  Myzus 
  cerasi 
  Fabr. 
  The 
  cherry-tree 
  aphis 
  was 
  reported 
  as 
  very 
  

   injurious 
  in 
  several 
  localities 
  in 
  the 
  state, 
  causing 
  the 
  leaves 
  to 
  curl 
  and 
  

   shrivel. 
  

  

  Myzus 
  ribis 
  Linn. 
  The 
  currant 
  aphis 
  was 
  brought 
  to 
  notice 
  early 
  

   in 
  June 
  in 
  several 
  localities, 
  through 
  complaint 
  made 
  of 
  its 
  abundance 
  

   on 
  the 
  leaves 
  of 
  currant 
  bushes. 
  

  

  Rhopalosiphum 
  species. 
  An 
  aphid 
  was 
  found 
  June 
  14 
  thickly 
  

   infesting 
  some 
  of 
  the 
  leaves 
  and 
  fruit 
  of 
  a 
  plum-tree 
  belonging 
  to 
  Mr 
  H. 
  

   A. 
  Unger 
  of 
  East 
  Greenbush, 
  N. 
  Y. 
  They 
  swarmed 
  on 
  the 
  leaves 
  and 
  

   literally 
  covered 
  portions 
  of 
  the 
  young 
  fruit. 
  Examples 
  were 
  sent 
  to 
  

   Washington 
  for 
  identification, 
  where 
  they 
  were 
  examined 
  by 
  Mr 
  Pcrgande. 
  

   He 
  was 
  unable 
  to 
  refer 
  them 
  to 
  any 
  known 
  species, 
  but 
  thought 
  that 
  they 
  

   might 
  possibly 
  be 
  an 
  undescribed 
  species 
  of 
  Rhopalosiphum. 
  

  

  Thrips 
  tabaci 
  Lind. 
  

  

  The 
  work 
  of 
  this 
  insect, 
  commonly 
  known 
  as 
  the 
  onion 
  thrips, 
  was 
  

   observed 
  in 
  August 
  last 
  at 
  Newark, 
  N. 
  Y. 
  The 
  leaves 
  of 
  the 
  infested 
  

   onions 
  were 
  badly 
  blasted, 
  and 
  the 
  crop, 
  it 
  was 
  thought, 
  would 
  be 
  

   reduced 
  one 
  third. 
  This 
  pest 
  was 
  also 
  found 
  on 
  the 
  lower 
  leaves 
  of 
  an 
  

   adjoining 
  cabbage 
  field, 
  but 
  not 
  in 
  very 
  large 
  numbers. 
  

  

  