﻿794 
  

  

  EEPORT 
  UNITED 
  STATES 
  GEOLOGICAL 
  SURVEY, 
  

  

  a 
  collar, 
  the 
  entire 
  mass 
  is 
  covered 
  over 
  with 
  a 
  gummy 
  secretion, 
  which 
  

   hardens, 
  and 
  serves 
  as 
  a 
  protection 
  to 
  the 
  eggs. 
  

  

  Eemedies. 
  — 
  In 
  the 
  early 
  spring 
  as 
  well 
  as 
  late 
  autumn 
  the 
  bunches 
  of 
  

   eggs 
  should 
  be 
  picked 
  off 
  and 
  burned. 
  When 
  the 
  tents 
  are 
  formed 
  in 
  

   Jane 
  the 
  nest 
  should 
  be 
  removed 
  with 
  a 
  mop 
  dipped 
  in 
  oil 
  or 
  kerosene, 
  

   at 
  noon-time, 
  when 
  the 
  caterpillars 
  are 
  in 
  the 
  tent. 
  By 
  discharging 
  a 
  

   gun 
  close 
  to 
  the 
  nest 
  it 
  can 
  be 
  destroyed 
  with 
  a 
  small 
  charge 
  of 
  powder. 
  

  

  Plate 
  LXIX, 
  Fig. 
  7, 
  represents 
  the 
  caterpillar 
  of 
  Glisiocam;ixh 
  disstria 
  

   Hiibner 
  {sylvatica 
  Harris), 
  which 
  rarely 
  occurs 
  on 
  apple-trees, 
  being 
  more 
  

   common 
  on 
  the 
  oak. 
  It 
  is 
  a 
  light 
  blue, 
  with 
  a 
  dorsal 
  rim 
  of 
  eleven 
  

   white 
  oval 
  spots. 
  The 
  moth, 
  with 
  the 
  eggs, 
  is 
  represented 
  at 
  Fig. 
  8. 
  

   There 
  are 
  two 
  species 
  of 
  Glisiocam/pa 
  in 
  California 
  ( 
  G. 
  calif 
  ornica 
  Pack., 
  

   and 
  G. 
  constrictu 
  Stretch), 
  and 
  one 
  is 
  troublesome 
  to 
  apple-trees 
  at 
  Salt 
  

   City, 
  Mr, 
  Barfort 
  tells 
  me, 
  which 
  may 
  in 
  time 
  leave 
  the 
  oak 
  on 
  which 
  it 
  

   feeds 
  and 
  attack 
  the 
  apple. 
  Both 
  of 
  the 
  eastern 
  tent-caterpillars 
  orig- 
  

   ua 
  ly 
  fed 
  on 
  the 
  oak. 
  

  

  The 
  Fall 
  Web-Worm, 
  HypTiantria 
  texior 
  Harris. 
  (Fig. 
  63.)-'FormiDg 
  large 
  webs 
  on 
  

   fruit 
  and 
  forest 
  trees 
  in 
  August 
  ; 
  a 
  hairy, 
  slender, 
  greenish-yellow 
  caterpillar 
  dotted 
  with 
  

   black, 
  changing 
  to 
  a 
  supw-white 
  unspotted 
  moth. 
  

  

  This 
  common 
  and 
  annoying 
  cat- 
  

   erpillar 
  is 
  universally 
  abundant, 
  

   weaving 
  its 
  conspicuous 
  web 
  or 
  tent- 
  

   like 
  structure 
  on 
  the 
  branches 
  of 
  the 
  

   apple, 
  pear, 
  and 
  cherry, 
  etc., 
  in 
  Au- 
  

   gust, 
  the 
  worms 
  remaining 
  about 
  

   until 
  the 
  leaves 
  are 
  nearly 
  ready 
  

   to 
  fall. 
  They 
  usually 
  eat 
  the 
  leaves 
  

   on 
  one 
  entire 
  branch 
  and 
  then 
  pass 
  

   to 
  the 
  next, 
  tying 
  the 
  leaves 
  to- 
  

   gether 
  with 
  silken 
  threads. 
  They 
  

   are 
  easily 
  exterminated 
  by 
  hand- 
  

   picking. 
  

  

  Fig. 
  (33. 
  — 
  Fall 
  Web- 
  Worm, 
  a, 
  larva; 
  

   chrysalis; 
  c, 
  moth, 
  (After 
  Riley.) 
  

  

  The 
  Coddling 
  Moth, 
  Carpocapsa 
  pomoneUa 
  Linn. 
  (Plate 
  LXIX, 
  Fig. 
  9.) 
  — 
  Eating 
  

   holes 
  in 
  apples, 
  causing 
  them 
  to 
  fall 
  prematurely; 
  a 
  small 
  flesh 
  -colored 
  worm, 
  trans- 
  

   forming 
  into 
  a 
  small 
  gray 
  moth. 
  

  

  This 
  moth, 
  which 
  is 
  such 
  a 
  universal 
  pest 
  in 
  the 
  Eastern 
  States, 
  has 
  

   for 
  live 
  years 
  past, 
  Mr. 
  Barfort 
  tells 
  me, 
  been 
  injurious 
  to 
  the 
  apples 
  in 
  

   Salt 
  Lake 
  City. 
  Indeed, 
  it 
  is 
  the 
  only 
  considerable 
  pest 
  of 
  the 
  apple 
  in 
  

   the 
  Territory, 
  but 
  one 
  that 
  attracts 
  a 
  good 
  deal 
  of 
  attention. 
  Mr. 
  

   Henry 
  Edwards, 
  of 
  San 
  Francisco, 
  writes 
  me 
  that 
  it 
  has 
  not 
  yet 
  occurred 
  

   in 
  California. 
  

  

  The 
  moth 
  lays 
  usually 
  one 
  Qgg 
  on 
  the 
  blossom 
  end 
  of 
  the 
  fruit 
  early 
  

   in 
  summer, 
  and 
  the 
  caterpillar 
  hatches 
  in 
  a 
  fe^w 
  days, 
  burrowing 
  di- 
  

   rectly 
  into 
  the 
  core 
  of 
  the 
  forming 
  fruit. 
  It 
  attains 
  its 
  full 
  size, 
  becom- 
  

   ing 
  fully 
  fed, 
  in 
  about 
  three 
  weeks, 
  when 
  the 
  apple 
  drops 
  to 
  the 
  ground, 
  

   and 
  the 
  larva 
  transforms 
  in 
  a 
  thin 
  or 
  sometimes 
  quite 
  thick 
  cocoon 
  

   in 
  crevices 
  in 
  the 
  bark 
  of 
  the 
  tree, 
  etc., 
  and 
  in 
  a 
  few 
  days 
  after 
  another 
  

   brood 
  of 
  moths 
  appear, 
  though 
  most 
  of 
  them, 
  as 
  I 
  have 
  found 
  in 
  Maine, 
  

   remain 
  in 
  their 
  cocoons 
  through 
  the 
  winter 
  in 
  the 
  caterpillar 
  state. 
  In 
  

   this 
  condition 
  I 
  have 
  found 
  them 
  under 
  the 
  loosened 
  bark 
  early 
  in 
  May. 
  

   Many 
  of 
  the 
  worms. 
  Dr. 
  Le 
  Barm, 
  in 
  his 
  Illinois 
  report, 
  says 
  one-half, 
  

   instead 
  of 
  waiting 
  for 
  the 
  immature 
  apples 
  to 
  fall, 
  desert 
  the 
  apple 
  and 
  

   let 
  themselves 
  down 
  by 
  the 
  web 
  or 
  walk 
  down 
  the 
  trunk 
  of 
  the 
  trees. 
  

   The 
  moth 
  is 
  gray, 
  with 
  numerous 
  darker, 
  transverse 
  lines, 
  and 
  with 
  a 
  

  

  A 
  

  

  