﻿312 
  

  

  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  siderable 
  numbers 
  in 
  an 
  infested 
  orchard 
  near 
  Albany. 
  The 
  beetle, 
  in 
  

   its 
  various 
  stages, 
  is 
  represented 
  in 
  the 
  accompanying 
  figure. 
  It 
  is 
  

   quite 
  convex 
  in 
  shape 
  and 
  only 
  -^ 
  ^^ 
  ^^ 
  i"^^ 
  ^ong. 
  The 
  twice 
  stabbed 
  

   lady 
  bug, 
  Chilocorus 
  bivulnerus 
  Muls., 
  is 
  another 
  native 
  form 
  

   known 
  to 
  feed 
  on 
  this 
  pest. 
  The 
  beetle 
  may 
  be 
  recognized 
  by 
  its 
  jet 
  

   black 
  color 
  relieved 
  by 
  two 
  red 
  spots 
  on 
  its 
  wing 
  covers. 
  Several 
  lady 
  

  

  Fig. 
  5 
  Pentilia 
  misellaa 
  beetle 
  ; 
  b 
  larva 
  ; 
  c 
  pupa 
  ; 
  d 
  blossom 
  end 
  of 
  pear 
  showing 
  

   scales 
  with 
  larvae 
  of 
  Pentilia 
  feeding 
  on 
  them, 
  and 
  pupae 
  of 
  Pentilia 
  attached 
  within 
  

   the 
  calyx— 
  all 
  greatly 
  enlarged. 
  (After 
  Howard, 
  TJ. 
  S. 
  dep't. 
  agric. 
  div, 
  ent. 
  Bui. 
  3, 
  n. 
  s. 
  1896j 
  

  

  bugs 
  introduced 
  into 
  California 
  were 
  colonized 
  on 
  trees 
  infested 
  with 
  San 
  

   Jose 
  scale, 
  and 
  of 
  these, 
  three 
  have 
  since 
  been 
  discovered 
  feeding 
  on 
  the 
  

   pest. 
  They 
  are 
  Ore 
  us 
  chalybeus, 
  O. 
  australasiae 
  and 
  

   Scymnus 
  lophanthae. 
  

  

  A 
  fungus 
  disease, 
  Sphaerostilbe 
  coccophila 
  Tul., 
  attacks 
  

   this 
  pest, 
  and 
  in 
  some 
  localities 
  it 
  has 
  killed 
  a 
  considerable 
  number 
  of 
  the 
  

   scales. 
  Prof. 
  P. 
  H 
  . 
  Rolfs 
  credits 
  this 
  organism 
  with 
  practically 
  exter- 
  

   minating 
  the 
  pernicious 
  scale 
  in 
  one 
  Florida 
  orchard 
  and 
  with 
  reducing 
  

   by 
  considerable 
  the 
  numbers 
  of 
  the 
  pest 
  in 
  others. 
  It 
  is 
  undoubtedly 
  a 
  

   native 
  of 
  Florida, 
  as 
  it 
  is 
  very 
  common 
  onAspidiotus 
  obscurus 
  

   Comst. 
  This 
  fungus 
  was 
  cultivated, 
  and 
  new 
  colonies 
  of 
  scales 
  infested, 
  

   but 
  unfortunately, 
  like 
  other 
  fungi 
  it 
  is 
  very 
  dependent 
  on 
  favorable 
  

  

  