﻿THE 
  GRAPE-BERRY 
  MOTH. 
  

  

  27 
  

  

  green 
  grape 
  and 
  eats 
  out 
  a 
  small 
  cavity 
  beneath 
  the 
  skin 
  in 
  which 
  

   to 
  deposit 
  its 
  egg. 
  This 
  injury 
  causes 
  a 
  purple 
  spot 
  on 
  the 
  surface 
  

   of 
  the 
  berry 
  similar 
  to 
  that 
  which 
  occurs 
  at 
  the 
  point 
  of 
  entrance 
  on 
  

   the 
  berry 
  by 
  the 
  larva 
  of 
  the 
  grape-berry 
  moth. 
  Where 
  the 
  two 
  

   insects 
  occur 
  in 
  the 
  same 
  vineyard 
  their 
  work 
  is 
  likely 
  to 
  be 
  confused. 
  

   The 
  larva 
  hatching 
  from 
  the 
  egg 
  of 
  the 
  grape 
  curculio 
  is 
  a 
  small, 
  

   white, 
  legless 
  grub 
  which 
  tunnels 
  to 
  the 
  center 
  of 
  the 
  berry, 
  feeds 
  on 
  

   the 
  pulp, 
  and 
  frequently 
  attacks 
  the 
  seed 
  in 
  much 
  the 
  same 
  manner 
  

   as 
  does 
  the 
  larva 
  of 
  the 
  grape-berry 
  moth 
  (see 
  fig. 
  9, 
  d). 
  The 
  larva 
  

   of 
  the 
  grape-berry 
  moth, 
  however, 
  is 
  a 
  caterpillar 
  of 
  a 
  green 
  or 
  pur- 
  

   plish 
  color 
  (see 
  PI. 
  IV, 
  fig. 
  3), 
  having 
  six 
  well-developed 
  legs 
  and 
  

   a 
  longer 
  and 
  more 
  slender 
  

   body, 
  is 
  very 
  active 
  in 
  its 
  

   movements, 
  and 
  when 
  dis- 
  

   turbed 
  by 
  cutting 
  open 
  the 
  

   berry 
  which 
  it 
  infests 
  is 
  likely 
  

   to 
  wriggle 
  from 
  its 
  tunnel 
  and 
  

   drop 
  to 
  the 
  ground. 
  

  

  The 
  grape 
  curculio 
  is 
  not 
  

   a 
  common 
  pest 
  in 
  the 
  vine- 
  

   yards 
  of 
  New 
  York 
  State 
  and 
  

   in 
  the 
  vicinity 
  of 
  the 
  Great 
  

   Lakes. 
  

  

  During 
  the 
  investigation 
  

   of 
  grape 
  insects 
  covering 
  the 
  

   past 
  five 
  years 
  only 
  two 
  

   light 
  infestations 
  of 
  this 
  in- 
  

   sect 
  have 
  been 
  observed 
  in 
  

   the 
  vineyards 
  of 
  the 
  Lake 
  

   Erie 
  Valley. 
  It 
  is, 
  however, 
  

   a 
  common 
  vineyard 
  pest 
  in 
  

   West 
  Virginia 
  and 
  in 
  many 
  of 
  

   the 
  States 
  of 
  the 
  Mississippi 
  

   Valley 
  and 
  the 
  Middle 
  West. 
  Since 
  the 
  beetles 
  feed 
  on 
  the 
  foliage 
  

   of 
  the 
  grapevine 
  it 
  is 
  readily 
  controlled 
  by 
  spraying 
  with 
  arsenate 
  

   of 
  lead, 
  the 
  applications 
  being 
  made 
  at 
  the 
  same 
  date 
  as 
  recom- 
  

   mended 
  against 
  the 
  larvae 
  of 
  the 
  grape-berry 
  moth 
  and 
  the 
  grape 
  

   rootworm. 
  

  

  An 
  account 
  of 
  the 
  life 
  history 
  and 
  habits 
  of 
  the 
  grape 
  curculio, 
  

   including 
  methods 
  for 
  its 
  control, 
  are 
  given 
  in 
  Farmers' 
  Bulletin 
  

   284 
  on 
  "Insect 
  and 
  Fungous 
  Enemies 
  of 
  the 
  Grape 
  East 
  of 
  the 
  

   Rocky 
  Mountains," 
  by 
  Messrs. 
  A. 
  L. 
  Quaintance 
  and 
  (\ 
  L. 
  Shear. 
  

  

  There 
  is 
  also 
  a 
  minute 
  chalcis 
  fly, 
  1 
  Evoxysoma 
  vitis 
  Saunders, 
  

   which 
  caused 
  some 
  alarm 
  among 
  vineyardists 
  in 
  Canada 
  when 
  it. 
  

   was 
  discovered 
  in 
  the 
  vicinity 
  of 
  London, 
  Ontario, 
  by 
  Saunders 
  in 
  

  

  1 
  Can. 
  Parmer, 
  October 
  15, 
  1868, 
  p. 
  816. 
  

  

  Fig. 
  9.— 
  Work 
  of 
  the 
  grape 
  curculio 
  in 
  berry 
  of 
  grape: 
  o, 
  

   Berry 
  from 
  which 
  grub 
  or 
  larva 
  has 
  emerged; 
  b, 
  adult 
  or 
  

   weevil 
  ovipositing 
  on 
  berry; 
  c, 
  enlarged 
  section 
  of 
  portion 
  

   of 
  berry, 
  showing 
  egg 
  cavity 
  and 
  egg; 
  d, 
  injured 
  berry 
  cut 
  

   open, 
  showing 
  larva 
  at 
  work, 
  a, 
  b, 
  d, 
  Enlarged; 
  c, 
  highly 
  

   magnified. 
  (From 
  Farmers' 
  Bulletin 
  284.) 
  

  

  