﻿THE 
  INSECTS 
  OF 
  NEW 
  JERSEY. 
  117 
  

  

  APHIS 
  Linn. 
  

  

  A. 
  ambrosia 
  Raf. 
  On 
  the 
  various 
  species 
  of 
  ragweed. 
  

  

  A. 
  asclepiadis 
  Fitch. 
  Occurs 
  on 
  various 
  species 
  of 
  milkweeds. 
  

  

  A. 
  brassicae 
  Linn. 
  The 
  common 
  cabbage 
  plant-louse. 
  Occurs 
  throughout 
  

  

  the 
  State 
  and 
  often 
  in 
  destructive 
  numbers. 
  

   A. 
  cerasifoliae 
  Fitch. 
  Common 
  on 
  wild 
  cherry 
  in 
  Hunterdon 
  Co. 
  (Sm). 
  

   A. 
  cornifoiias 
  Fitch. 
  On 
  the 
  leaves 
  of 
  dogwood 
  and 
  "Crataagus." 
  

  

  A. 
  gossypi 
  Glover. 
  The 
  melon-plant 
  louse: 
  occurs 
  throughout 
  the 
  State, 
  

   but 
  much 
  more 
  commonly 
  in 
  the 
  southei'n 
  counties, 
  where 
  it 
  often 
  

   destroys 
  entire 
  crops. 
  It 
  occurs 
  also 
  on 
  a 
  great 
  variety 
  of 
  weedy 
  

   plants 
  on 
  which 
  it 
  passes 
  the 
  winter, 
  migrating 
  to 
  the 
  melon 
  fields 
  

   in 
  June. 
  In 
  ordinary 
  seasons 
  only 
  a 
  few 
  hills 
  in 
  a 
  field 
  become 
  in- 
  

   fested 
  in 
  that 
  month, 
  and 
  from 
  these 
  the 
  spread 
  is 
  in 
  every 
  direction. 
  

   Covering 
  these 
  hills 
  with 
  tight 
  boxes, 
  tubs 
  or 
  hay 
  caps, 
  and 
  evap- 
  

   orating 
  beneath 
  them 
  carbon 
  bisulphide 
  at 
  the 
  rate 
  of 
  1 
  tablespoon- 
  

   ful 
  to 
  every 
  cubic 
  foot 
  of 
  s^ace 
  will 
  often 
  check 
  the 
  spread 
  of 
  the 
  

   species 
  over 
  the 
  field 
  and 
  save 
  the 
  crop. 
  Once 
  they 
  are 
  generally 
  

   distributed 
  the 
  whale-oil 
  soap 
  is 
  the 
  only 
  satisfactory 
  remedy. 
  

  

  A. 
  forbesi 
  Weed. 
  The 
  strawberry-root 
  louse. 
  Locally 
  and 
  seasonally 
  

   common 
  in 
  the 
  light 
  sandy 
  soils 
  of 
  southern 
  New 
  Jersey, 
  and 
  rarely 
  

   injurious. 
  In 
  the 
  more 
  northern 
  parts 
  almost 
  entirely 
  absent. 
  

  

  A. 
  maidis 
  Fitch. 
  The 
  corn-plant 
  louse. 
  Sometimes 
  quite 
  plentiful, 
  but 
  

   not 
  injurious 
  in 
  New 
  Jersey. 
  

  

  A. 
  maidiradicis 
  Forbes. 
  The 
  corn-root 
  louse. 
  A 
  very 
  destructive 
  species 
  

   in 
  the 
  middle 
  west, 
  but 
  in 
  New 
  Jersey 
  of 
  only 
  occasional 
  occurrence. 
  

   Found 
  also 
  on 
  the 
  roots 
  of 
  a 
  variety 
  of 
  weedy 
  plants 
  and 
  attended 
  

   by 
  ants 
  that 
  care 
  for 
  the 
  winter 
  eggs 
  and 
  colonize 
  the 
  young 
  on 
  

   proper 
  plants 
  in 
  spring. 
  

  

  A. 
  maii 
  Fabr. 
  The 
  apple-plant 
  louse. 
  Occurs 
  throughout 
  the 
  State, 
  some- 
  

   times 
  in 
  great 
  numbers, 
  causing 
  serious 
  injury. 
  Spray 
  very 
  early 
  

   when 
  this 
  species 
  is 
  noticed 
  in 
  numbers, 
  to 
  kill 
  off 
  the 
  stem-mothers 
  

   and 
  their 
  first 
  brood 
  before 
  they 
  cripple 
  the 
  leaves 
  so 
  as 
  to 
  serve 
  as 
  

   shelters. 
  "Malifoliffi" 
  is 
  now 
  considered 
  a 
  form 
  of 
  this 
  species. 
  

  

  A. 
  persicae-niger 
  E. 
  F. 
  Smith. 
  The 
  black-peach 
  louse. 
  Plentiful 
  through- 
  

   out 
  the 
  State 
  south 
  of 
  the 
  Piedmont 
  plain 
  and 
  most 
  abundant 
  in 
  the 
  

   lighter 
  sandy, 
  soils 
  where 
  the 
  root 
  form 
  often 
  does 
  serious 
  injury 
  to 
  

   young 
  trees. 
  On 
  the 
  Piedmont 
  plain 
  and 
  northward 
  it 
  is 
  rare 
  and 
  

   never 
  injurious. 
  Tobacco 
  dust 
  worked 
  in 
  a 
  trench 
  over 
  the 
  roots 
  

   around 
  the 
  tree 
  is 
  more 
  or 
  less 
  satisfactorily 
  used 
  as 
  a 
  remedy. 
  

  

  A. 
  prunicola 
  Kalt. 
  Newark, 
  Vineland 
  (U 
  S 
  Ag) 
  ; 
  on 
  plum. 
  

  

  A. 
  prunifoliae 
  Fitch. 
  A 
  widely-distributed 
  species 
  on 
  plum. 
  

  

  A. 
  quercifoliae 
  Walsh. 
  Feeds 
  on 
  oak, 
  soft 
  maple 
  and 
  button 
  ball. 
  

  

  A. 
  rumicis 
  Linn. 
  The 
  bean-plant 
  louse. 
  Generally 
  distributed, 
  some- 
  

   times 
  common, 
  but 
  never, 
  in 
  my 
  experience, 
  injurious 
  in 
  New 
  Jersey. 
  

  

  