﻿REPORT 
  OF 
  THE 
  STATE 
  ENTOMOLOGIST 
  I9OO 
  997 
  

  

  I 
  pound 
  to 
  10 
  gallons 
  

  

  June 
  8. 
  110 
  caterpillars 
  dead, 
  105 
  living 
  

   9. 
  29 
  caterpillars 
  dead 
  

   15. 
  6 
  caterpillars 
  dead 
  

   19. 
  10 
  caterpillars 
  dead 
  : 
  72% 
  of 
  the 
  total 
  killed. 
  

  

  The 
  experiment 
  was 
  continued 
  to 
  the 
  end, 
  and 
  the 
  caterpillars 
  not 
  killed 
  

   developed 
  34 
  parasites, 
  20 
  male 
  and 
  but 
  eight 
  female 
  moths, 
  and 
  a 
  num- 
  

   ber 
  died 
  in 
  their 
  cocoons 
  from 
  some 
  other 
  cause. 
  No 
  moths 
  developed 
  

   from 
  those 
  sprayed 
  with 
  the 
  stronger 
  solution 
  of 
  tobacco 
  whale 
  oil 
  soap. 
  

   This 
  latter 
  soap 
  appears 
  to 
  be 
  much 
  more 
  effective 
  for 
  this 
  kind 
  of 
  work 
  

   than 
  the 
  ordinary 
  preparation. 
  Experience 
  emphasized 
  the 
  necessity 
  of 
  

   thoroughly 
  drenching 
  the 
  caterpillars 
  with 
  the 
  insecticide, 
  if 
  the 
  best 
  

   results 
  were 
  to 
  be 
  obtained. 
  A 
  moderately 
  fine 
  spray 
  was 
  much 
  more 
  

   economical 
  of 
  the 
  solution 
  and 
  gave 
  better 
  results 
  than 
  a 
  very 
  coarse 
  

   spray. 
  

  

  This 
  species 
  was 
  attacked 
  by 
  a 
  large 
  number 
  of 
  parasites, 
  and 
  in 
  some 
  

   localities 
  the 
  pests 
  were 
  nearly 
  exterminated 
  in 
  limited 
  areas. 
  A 
  lot 
  of 
  

   100 
  cocoons 
  were 
  collected 
  at 
  Slingerlands 
  (N. 
  Y.) 
  June 
  28, 
  and 
  the 
  

   natural 
  enemies 
  of 
  this 
  species 
  bred 
  from 
  them. 
  46 
  parasites 
  were 
  obtained, 
  

   2 
  1 
  of 
  which 
  were 
  either 
  Pimplas 
  or 
  T 
  h 
  e 
  r 
  o 
  n 
  i 
  a 
  fulvescens 
  Cress., 
  a 
  

   secondary 
  parasite 
  and 
  an 
  enemy 
  of 
  the 
  Pimplas, 
  and 
  a 
  considerable 
  pro- 
  

   portion 
  of 
  the 
  remainder 
  belonged 
  to 
  the 
  Tachinidae. 
  The 
  thorough- 
  

   ness 
  of 
  this 
  parasitism 
  was 
  strikingly 
  shown 
  by 
  a 
  lot 
  of 
  cocoons 
  from 
  

   Altamont 
  submitted 
  for 
  examination 
  by 
  Judge 
  J. 
  W. 
  McNamara. 
  Over 
  

   90 
  % 
  had 
  been 
  killed 
  by 
  parasites. 
  Pimp 
  la 
  conquisitor 
  Say 
  and 
  

   P. 
  inquisitor 
  Say 
  were 
  the 
  two 
  most 
  abundant 
  and 
  effective 
  parasites 
  

   in 
  many 
  localities. 
  The 
  females 
  were 
  present 
  in 
  considerable 
  numbers 
  

   at 
  Slingerlands, 
  and 
  could 
  be 
  seen 
  investigating 
  the 
  cocoons 
  and 
  occa- 
  

   sionally 
  thrusting 
  the 
  ovipositor 
  through 
  the 
  meshes. 
  Theronia 
  ful- 
  

   vescens 
  Cress, 
  was 
  almost 
  as 
  numerous 
  as 
  either 
  of 
  the 
  two 
  preceding 
  

   species. 
  It 
  was 
  taken 
  at 
  Slingerlands, 
  and 
  also 
  reared 
  from 
  cocoons 
  re- 
  

   ceived 
  from 
  Glens 
  Falls. 
  Anomalon 
  exile 
  Pro 
  v. 
  was 
  reared 
  in 
  

   smaller 
  numbers 
  from 
  cocoons 
  received 
  from 
  Lyon 
  Falls 
  and 
  Glens 
  Falls. 
  

   Pteromalus 
  vanessae 
  How. 
  was 
  reared 
  in 
  considerable 
  numbers 
  

   from 
  cocoons 
  collected 
  at 
  Glens 
  Falls. 
  Tachina 
  mella 
  Walk, 
  was 
  a 
  

   valuable 
  parasite 
  in 
  many 
  localities, 
  and 
  a 
  large 
  number 
  of 
  flies 
  could 
  

   have 
  been 
  reared. 
  The 
  latter 
  part 
  of 
  June, 
  when 
  the 
  forest 
  tent-cater- 
  

   pillars 
  were 
  crawling 
  everywhere, 
  one 
  was 
  attacked 
  by 
  a 
  common 
  wasp, 
  

   Polistes 
  pallipes 
  St 
  Farg. 
  Two 
  wasps 
  were 
  engaged 
  in 
  the 
  bat- 
  

   tle. 
  They 
  cut 
  the 
  caterpillar 
  in 
  two, 
  and 
  one 
  began 
  feeding 
  on 
  a 
  portion, 
  

   while 
  the 
  other 
  hung 
  around, 
  evidently 
  anxious 
  to 
  get 
  at 
  the 
  delicacy. 
  A 
  

  

  