﻿THE 
  GRAPE-BERRY 
  MOTH. 
  67 
  

  

  tions 
  have 
  occurred 
  simultaneously, 
  and 
  as 
  a 
  result, 
  failure 
  has 
  been 
  

   complete. 
  For 
  this 
  reason 
  the 
  spray 
  method 
  of 
  control 
  is 
  looked 
  upon 
  

   with 
  disfavor 
  by 
  many 
  who 
  have 
  carried 
  on 
  the 
  work 
  under 
  these 
  

   conditions. 
  

  

  In 
  vineyards 
  where 
  infestation 
  is 
  at 
  all 
  serious 
  vineyardists 
  are 
  

   urged 
  to 
  give 
  the 
  spray 
  method 
  a 
  thorough 
  trial 
  for 
  a 
  period 
  of 
  several 
  

   consecutive 
  seasons. 
  If 
  the 
  infestation 
  is 
  confined 
  to 
  a 
  limited 
  area, 
  

   as 
  is 
  frequently 
  the 
  case, 
  the 
  owner 
  can 
  well 
  afford 
  to 
  make 
  additional 
  

   applications 
  over 
  this 
  area 
  to 
  prevent 
  it 
  from 
  increasing 
  and 
  spreading 
  

   farther 
  into 
  the 
  vineyard 
  and 
  possibly, 
  at 
  some 
  future 
  time, 
  causing 
  

   the 
  loss 
  of 
  a 
  large 
  percentage 
  of 
  the 
  crop 
  over 
  the 
  entire 
  area. 
  

  

  A 
  lack 
  of 
  knowledge 
  of 
  the 
  extent 
  of 
  the 
  infestation 
  of 
  his 
  vineyard 
  

   by 
  this 
  pest 
  during 
  the 
  early 
  stages 
  of 
  the 
  first 
  brood 
  is 
  perhaps 
  one 
  of 
  

   the 
  chief 
  causes 
  for 
  lack 
  of 
  successful 
  control 
  by 
  the 
  owner. 
  It 
  is 
  

   hoped 
  that 
  with 
  the 
  aid 
  of 
  the 
  data 
  contained 
  in 
  this 
  paper 
  under 
  

   " 
  Seasonal 
  history 
  " 
  the 
  vineyardist 
  will 
  be 
  better 
  able 
  to 
  determine 
  the 
  

   periods 
  when 
  the 
  maximum 
  number 
  of 
  larva? 
  leave 
  the 
  eggs 
  to 
  enter 
  

   the 
  berries, 
  and 
  with 
  the 
  additional 
  aid 
  of 
  more 
  efficient 
  high-pressure 
  

   power-spraying 
  machinery 
  now 
  available 
  for 
  this 
  work 
  it 
  is 
  believed 
  

   that 
  the 
  poison-spray 
  method 
  of 
  control 
  will 
  prove 
  to 
  be 
  the 
  most 
  

   effective 
  and 
  practical 
  means 
  of 
  controlling 
  this 
  pest. 
  

  

  Combination 
  spray 
  mixtures, 
  whereby 
  other 
  insect 
  pests 
  of 
  the 
  

   grapevine 
  can 
  be 
  controlled 
  by 
  the 
  same 
  applications 
  made 
  against 
  

   the 
  grape-berry 
  moth, 
  have 
  been 
  suggested 
  under 
  the 
  head 
  of 
  recom- 
  

   mendations 
  for 
  control 
  and 
  are 
  worthy 
  of 
  trial 
  in 
  the 
  endeavor 
  to 
  

   reduce 
  the 
  cost 
  of 
  controlling 
  several 
  of 
  the 
  pests 
  that 
  infest 
  the 
  fruit 
  

   and 
  foliage 
  of 
  the 
  grape 
  in 
  the 
  vineyards 
  throughout 
  the 
  Lake 
  Erie 
  

   Valley. 
  This 
  phase 
  of 
  control 
  work 
  will 
  receive 
  some 
  attention 
  in 
  

   connection 
  with 
  further 
  studies 
  to 
  be 
  made 
  of 
  grape 
  pests, 
  by 
  the 
  

   Bureau 
  of 
  Entomology, 
  in 
  this 
  region. 
  

  

  BIBLIOGRAPHY. 
  

  

  1800. 
  Clemens, 
  Dr. 
  B 
  — 
  Proc. 
  Acad. 
  Nat. 
  Sci. 
  Phila., 
  1860, 
  p. 
  359. 
  

   Description 
  of 
  adult, 
  habits 
  of 
  larva. 
  Pohjchrosis 
  viieana. 
  

  

  1869. 
  Walsh, 
  B. 
  D.-, 
  and 
  Riley, 
  C. 
  V. 
  — 
  Grape-berry 
  moth. 
  <Amer. 
  Ent., 
  vol. 
  I, 
  

   p. 
  148, 
  March. 
  

   Answer 
  to 
  inquiry 
  of 
  M. 
  C. 
  Read; 
  means 
  against 
  Penthina 
  vitivorana^ 
  

  

  1869. 
  Walsh, 
  B. 
  D., 
  and 
  Riley, 
  C. 
  V. 
  — 
  The 
  grape-berry 
  moth 
  (Penthina 
  vitivorana 
  

   Packard). 
  <Amer. 
  Ent., 
  vol. 
  1, 
  pp. 
  177-179, 
  figs. 
  123-125, 
  May. 
  

   Natural 
  history, 
  ravages, 
  and 
  means 
  against 
  P. 
  vitivorana; 
  figures 
  larva, 
  pupa, 
  cocoon, 
  Imagos, 
  and 
  

   injured 
  grapes. 
  

  

  1869. 
  Walsh, 
  B. 
  I). 
  , 
  and 
  Riley, 
  C. 
  V. 
  — 
  The 
  grape-berry 
  moth. 
  <Amer. 
  Ent., 
  

   vol. 
  2, 
  p. 
  28, 
  September-October. 
  

   Answer 
  to 
  inquiry 
  of 
  H. 
  C. 
  Barnard; 
  ravages 
  of 
  Penthina 
  vitivorana. 
  

  

  1869. 
  Riley, 
  <'. 
  V.— 
  The 
  grape-fruit 
  worm 
  (Penthina 
  viHvorana 
  Pack). 
  <Fire1 
  Aim. 
  

   Kept. 
  1 
  1 
  1 
  ^ 
  Mo. 
  i 
  L868), 
  pp. 
  L33-136, 
  figs 
  29, 
  30, 
  76, 
  pi. 
  2. 
  

   Reports 
  from 
  correspondent! 
  in 
  Ohio, 
  Pennsylvania, 
  and 
  Missouri; 
  personal 
  observations 
  of 
  lis 
  occur- 
  

   rence 
  in 
  Missouri; 
  alsoaccounl 
  of 
  various 
  si 
  i 
  

  

  