﻿5IO 
  REPORT 
  OF 
  NEW 
  JERSEY 
  STATE 
  MUSEUM. 
  

  

  Family 
  PSYCHID^. 
  

  

  These 
  are 
  the 
  "bag 
  worms," 
  so 
  called 
  because 
  the 
  larvae 
  make 
  a 
  case 
  

   or 
  sac, 
  closed 
  at 
  one 
  end, 
  of 
  leaves, 
  chips 
  or 
  silk, 
  in 
  which 
  they 
  live 
  and 
  

   which 
  they 
  carry 
  about 
  with 
  them. 
  The 
  male 
  moths 
  only 
  are 
  winged, 
  the 
  

   wings 
  transparent 
  or 
  thinly 
  scaled, 
  black, 
  the 
  body 
  very 
  hairy, 
  abdomen 
  

   long 
  and 
  slender, 
  antennae 
  pectinated. 
  The 
  females 
  are 
  grub-like 
  and 
  

   lay 
  their 
  eggs 
  in 
  the 
  sac 
  which 
  they 
  constructed 
  as 
  larvse. 
  

  

  THYRIDOPTERYX 
  Steph. 
  

  

  Fig. 
  213. 
  — 
  Bag 
  worm, 
  Thyridopteryx 
  cphemeraformis: 
  a, 
  larva; 
  b, 
  

  

  male 
  pupa; 
  c, 
  adult 
  female; 
  d, 
  adult 
  male; 
  e, 
  bag 
  cut 
  open 
  

  

  to 
  show 
  the 
  egg 
  mass; 
  f, 
  bag 
  carried 
  by 
  feeding 
  

  

  caterpillar; 
  g, 
  young 
  larvse 
  in 
  their 
  first 
  case. 
  

  

  ephemerseformis 
  Steph. 
  The 
  common 
  "bag" 
  or 
  "drop-worm." 
  Occurs 
  

   throughout 
  the 
  State 
  on 
  a 
  large 
  variety 
  of 
  fruit, 
  shade 
  and 
  ornamental 
  

   trees, 
  deciduous 
  and 
  coniferous. 
  It 
  is 
  especially 
  injurious 
  to 
  "Arbor 
  

   vitse" 
  hedges, 
  which 
  are 
  often 
  entirely 
  killed 
  by 
  it. 
  The 
  bags 
  con- 
  

   taining 
  eggs 
  hang 
  on 
  the 
  trees 
  all 
  winter, 
  the 
  larvse 
  hatch 
  in 
  May, 
  

   and 
  adults 
  appear 
  in 
  late 
  August 
  and 
  September. 
  Among 
  remedial 
  

   measures, 
  picking 
  off 
  and 
  destroying 
  bags 
  in 
  winter 
  takes 
  first 
  rank. 
  

   During 
  the 
  growing 
  season 
  the 
  larvae 
  succumb 
  readily 
  to 
  arsenites, 
  but 
  

   on 
  "Arbor 
  vitae" 
  and 
  conifers 
  only 
  arsenate 
  of 
  lead 
  can 
  be 
  safely 
  used. 
  

  

  EURYCYTTARUS 
  Hamps. 
  (PYSCHE 
  Ochs.) 
  

  

  confederata 
  G. 
  & 
  R. 
  Paterson 
  V, 
  25 
  (Gr) 
  ; 
  Ft. 
  Lee 
  V, 
  29 
  (div) 
  ; 
  Jersey 
  

   City 
  (Sb); 
  Newark 
  (Soc) 
  ; 
  Elizabeth 
  VI, 
  15, 
  VIII, 
  10 
  (Bz) 
  ; 
  DaCosta 
  

   VI, 
  3 
  (Dke). 
  It 
  probably 
  occurs 
  throughout 
  the 
  State 
  and 
  is 
  locally 
  

   common, 
  though 
  not 
  often 
  found. 
  The 
  larvae 
  occur 
  on 
  the 
  bark 
  of 
  oak, 
  

   chestnut, 
  dogwood, 
  hemlock 
  and 
  pine 
  early 
  in 
  the 
  season, 
  and 
  Mr. 
  

   Beutenmuller 
  says 
  it 
  is 
  two-brooded. 
  

  

  