﻿io8 
  REPORT 
  OF 
  NEW 
  JERSEY 
  STATE 
  MUSEUM. 
  

  

  Family 
  PSYLLID^^. 
  

  

  Commonly 
  known 
  as 
  "jumping 
  plant 
  lice" 
  from 
  their 
  active 
  habits, 
  but 
  

   really 
  resemble 
  much 
  more 
  closely 
  a 
  miniature 
  Cicada 
  in 
  appearance. 
  

   Both 
  pairs 
  of 
  wings 
  are 
  transparent 
  as 
  a 
  rule 
  and 
  the 
  

   antennae 
  are 
  quite 
  long, 
  thus 
  differing 
  from 
  the 
  leaf 
  

   and 
  tree-hoppers 
  to 
  which 
  in 
  some 
  other 
  respects 
  

   they 
  are 
  similar. 
  

  

  Some 
  of 
  the 
  species 
  produce 
  galls, 
  while 
  others 
  

   feed 
  exposed 
  on 
  the 
  foliage. 
  Our 
  only 
  injurious 
  

   species 
  is 
  the 
  "pear 
  psylla," 
  which 
  not 
  only 
  punctures 
  

   the 
  leaf 
  and 
  fruit 
  stalk, 
  exhausting 
  the 
  juices, 
  but 
  

   also 
  excretes 
  a 
  honey 
  dew 
  in 
  such 
  great 
  quantity 
  as 
  

   to 
  coat 
  the 
  leaves 
  and 
  form 
  a 
  foundation 
  for 
  the 
  de- 
  

   velopment 
  of 
  a 
  black 
  fungus 
  that 
  covers 
  both 
  leaves 
  

   and 
  fruit 
  and 
  checks 
  development. 
  The 
  insect 
  hiber- 
  p. 
  _Pear 
  s 
  lla- 
  

   nates 
  as 
  an 
  adult 
  in 
  bark 
  crevices 
  and 
  under 
  bud 
  winged 
  adult; 
  

  

  scales, 
  and 
  a 
  thorough 
  spraying 
  just 
  before 
  the 
  buds 
  enlarged, 
  

  

  open, 
  witla 
  one 
  of 
  the 
  miscible 
  oils 
  diluted 
  no 
  more 
  

  

  than 
  nine 
  times, 
  will 
  kill 
  most 
  of 
  the 
  specimens 
  in. 
  

   their 
  winter 
  quarters. 
  Summer 
  applications 
  are 
  not 
  

   nearly 
  so 
  effective, 
  because 
  the 
  young 
  are 
  often 
  cov- 
  

   ered 
  by 
  a 
  frothy 
  secretion 
  and 
  the 
  adults 
  fly 
  readily 
  

   / 
  to 
  avoid 
  the 
  spray; 
  but 
  a 
  strong 
  kerosene 
  emulsion 
  

  

  yf 
  is 
  sometimes 
  a 
  great 
  help 
  in 
  reducing 
  numbers. 
  

  

  ^ 
  I 
  There 
  has 
  been 
  little 
  collecting 
  in 
  this 
  family 
  since 
  

  

  <J^£ 
  the 
  last 
  edition 
  was 
  published 
  and 
  the 
  present 
  list 
  

  

  , 
  ^. 
  , 
  stands 
  now 
  much 
  as 
  it 
  did 
  then, 
  as 
  Mr. 
  Schwarz 
  

   Fig. 
  40. 
  — 
  Appendiculate 
  . 
  

  

  eggs 
  of 
  Psylla; 
  much 
  ^^^^ 
  ^^• 
  

  

  enlarged. 
  

  

  Sub-family 
  Liviin^. 
  

  

  LIVIA 
  Latr. 
  

   L. 
  maculipennis 
  Fitch. 
  Staten 
  Island 
  VI, 
  13, 
  Jamesburg 
  VII, 
  13 
  (Ds). 
  

   L. 
  vernalis 
  Fitch. 
  Common 
  throughout 
  the 
  eastern 
  United 
  States 
  on 
  

   Juncus 
  sp.; 
  imago 
  in 
  winter 
  on 
  pine 
  trees. 
  

  

  Sut> 
  family 
  Aphalarin^. 
  

  

  PSYLLOPSIS 
  Loew. 
  

   P. 
  fraxinicola 
  Forst. 
  Atlantic 
  City 
  on 
  "Fraxinus 
  excelsior" 
  (C 
  V. 
  R). 
  

   Imported 
  from 
  Europe 
  and 
  quite 
  injurious 
  to 
  ash 
  trees 
  (Sz). 
  

  

  APHALARA 
  Forst. 
  

   A. 
  calthea 
  Linn. 
  New 
  Brunswick 
  VII, 
  27 
  (Sm), 
  on 
  "Polygonum 
  hydro- 
  

   piper" 
  (Sz). 
  

   A. 
  sp. 
  nov. 
  Sz. 
  Anglesea 
  V, 
  28 
  (Sm), 
  on 
  Solidago 
  throughout 
  the 
  State 
  

   (Sz). 
  

  

  