﻿SCALE 
  INSECTS 
  OF 
  IMPORTANCE 
  

  

  303 
  

  

  Distribution. 
  This 
  insect 
  is 
  well 
  distributed 
  over 
  New 
  York 
  state 
  

   and 
  is 
  present 
  in 
  many 
  other 
  states, 
  as 
  shown 
  by 
  the 
  following 
  compiled 
  

   list 
  : 
  Massachusetts, 
  Rhode 
  Island, 
  Connecticut, 
  New 
  York, 
  New 
  Jersey, 
  

   Delaware, 
  Pennsylvania, 
  Maryland, 
  Virginia, 
  West 
  Virginia, 
  District 
  of 
  

   Columbia, 
  Kentucky, 
  Tennessee, 
  Georgia, 
  Kansas, 
  Mississippi, 
  Ohio, 
  

   Indiana, 
  Illinois, 
  Missouri, 
  Iowa, 
  Nebraska, 
  Utah, 
  South 
  Dakota 
  and 
  

   CaUfornia. 
  It 
  has 
  also 
  been 
  recorded 
  from 
  Ontario, 
  Nova 
  Scotia, 
  New 
  

   Brunswick 
  and 
  Prince 
  Edward 
  Island. 
  The 
  absence 
  of 
  record 
  by 
  no 
  

   means 
  implies 
  that 
  the 
  scale 
  is 
  not 
  known 
  in 
  the 
  omitted 
  states. 
  It 
  has 
  

   also 
  been 
  recorded 
  from 
  England, 
  having 
  been 
  carried 
  there 
  on 
  R 
  i 
  b 
  e 
  s 
  

   sanguineum. 
  Dr 
  Howard, 
  in 
  his 
  account 
  of 
  this 
  insect, 
  alludes 
  to 
  

  

  Fig. 
  3. 
  Ablerus 
  clisiocampae, 
  female 
  greatly 
  enlarged. 
  (After 
  Howard, 
  Insect 
  life. 
  1894. 
  7:7) 
  

  

  an 
  early 
  record 
  where 
  it 
  is 
  stated 
  that 
  the 
  appletree 
  bark 
  louse 
  is 
  gradu- 
  

   ally 
  supplanting 
  this 
  pest, 
  and 
  proceeds 
  to 
  state 
  that 
  the 
  former 
  is 
  appar- 
  

   ently 
  the 
  hardier, 
  and 
  that 
  he 
  believes 
  that 
  it 
  will 
  in 
  time 
  take 
  the 
  place 
  

   of 
  Chi 
  on 
  asp 
  is 
  fur 
  fur 
  a. 
  Both 
  species 
  have 
  been 
  in 
  New 
  York 
  

   state 
  for 
  about 
  50 
  years 
  at 
  least, 
  and 
  it 
  does 
  not 
  appear 
  that 
  the 
  native 
  

   form 
  has 
  been 
  materially 
  checked 
  by 
  the 
  presence 
  of 
  a 
  more 
  hardy 
  rival. 
  

   Natural 
  enemies. 
  One 
  hymenopterous 
  parasite, 
  Ablerus 
  clis- 
  

   iocampae 
  Ashm., 
  has 
  been 
  bred 
  from 
  this 
  scale 
  insect 
  by 
  Dr 
  How- 
  

   ard. 
  Two 
  Coccinellids, 
  Hyperaspidius 
  species 
  and 
  C 
  h 
  i 
  1 
  o 
  c 
  - 
  

   orus 
  bivulnerus 
  Muls., 
  the 
  twice 
  stabbed 
  lady 
  bug, 
  prey 
  on 
  this 
  

   pest. 
  The 
  latter 
  is 
  stated 
  to 
  be 
  a 
  specially 
  valuable 
  enemy. 
  

  

  