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  Phlepsius 
  irroratus 
  Say. 
  

  

  (^Allygi/s 
  irroratus 
  Say.) 
  

  

  (PI. 
  III., 
  Fig. 
  2.) 
  

  

  This 
  also 
  is 
  not 
  especially 
  a 
  grass 
  insect, 
  but 
  attacks 
  a 
  great 
  variety 
  

   of 
  plants. 
  It 
  ranges 
  from 
  Canada 
  and 
  Massachusetts 
  on 
  the 
  east 
  to 
  

   Iowa 
  and 
  Kansas 
  on 
  the 
  west, 
  and 
  is 
  abundant 
  in 
  Illinois. 
  A 
  number 
  

   of 
  specimens 
  were 
  taken 
  on 
  sugar 
  beets 
  in 
  various 
  parts 
  of 
  the 
  state 
  in 
  

   June, 
  September, 
  and 
  October. 
  It 
  is 
  recorded 
  on 
  low 
  herbage 
  (Say), 
  

   on 
  willows 
  and 
  other 
  plants 
  in 
  damp 
  places 
  (Uhler), 
  on 
  bushes 
  and 
  

   trees 
  (Van 
  Duzee), 
  on 
  celery 
  (Davis), 
  on 
  apple 
  (Gillette 
  and 
  Baker), 
  

   on 
  hickory 
  (Packard), 
  on 
  grasses 
  and 
  grains 
  (Osborn), 
  and 
  in 
  dry 
  weedy 
  

   grass-lands 
  (Van 
  Duzee). 
  We 
  have 
  found 
  it 
  abundant 
  in 
  young 
  wheat 
  in 
  

   Illinois. 
  It 
  causes 
  the 
  dark 
  purple 
  spotting 
  often 
  seen 
  on 
  the 
  leaves 
  of 
  

   lamb's-quarters, 
  and 
  probably 
  a 
  similar 
  discoloration 
  common 
  on 
  beet 
  

   leaves 
  (U. 
  S. 
  Bull. 
  23, 
  p. 
  17). 
  Bruner 
  mentions 
  an 
  undetermined 
  Allygus 
  

   — 
  very 
  likely 
  this 
  or 
  some 
  other 
  Phlepsius 
  — 
  as 
  frequent 
  on 
  beets 
  and 
  

   causing 
  the 
  spotting 
  of 
  lamb's-quarters. 
  We 
  once 
  found 
  a 
  small 
  bass- 
  

   wood 
  brush 
  swarming 
  with 
  this 
  species 
  in 
  October. 
  The 
  leaves 
  were 
  

   noticeably 
  faded 
  and 
  spotted 
  with 
  blackish 
  points. 
  The 
  adults 
  seem 
  

   quite 
  uniformly 
  distributed 
  through 
  their 
  season, 
  which 
  is 
  from 
  late 
  

   May 
  to 
  about 
  the 
  middle 
  of 
  October, 
  though 
  they 
  are 
  especially 
  abun- 
  

   dant 
  in 
  June 
  and 
  the 
  first 
  part 
  of 
  July, 
  and 
  again 
  in 
  fall. 
  There 
  are 
  

   probably 
  two 
  broods, 
  and 
  the 
  winter 
  is 
  presumably 
  passed 
  in 
  the 
  egg 
  

   stage 
  as 
  there 
  is 
  no 
  record 
  of 
  winter 
  collections 
  of 
  the 
  adult. 
  

  

  Thamnotettix 
  belli 
  Uhl. 
  

  

  This 
  is 
  recorded 
  only 
  from 
  Canada, 
  Michigan, 
  and 
  Colorado. 
  It 
  is 
  

   included 
  here 
  on 
  the 
  authority 
  of 
  Gillette 
  and 
  Baker, 
  who 
  have 
  reported 
  

   its 
  occurrence 
  on 
  cultivated 
  beet, 
  alfalfa, 
  and 
  Artemisia 
  tridentata 
  in 
  

   Colorado, 
  the 
  dates 
  given 
  ranging 
  from 
  May 
  8th 
  to 
  August 
  i8th. 
  

  

  Gnathodus 
  abdominalis 
  Van 
  D. 
  

  

  Gnathodus 
  impictus 
  Van 
  D. 
  

  

  The 
  two 
  species 
  of 
  this 
  genus 
  here 
  mentioned 
  are 
  recognizable 
  by 
  

   their 
  short 
  transverse 
  heads 
  and 
  somewhat 
  dull 
  green 
  color. 
  They 
  are 
  

   about 
  an 
  eighth 
  of 
  an 
  inch 
  long. 
  Both 
  seem 
  widely 
  scattered 
  east 
  of 
  

   the 
  Rocky 
  Mountains, 
  and 
  have 
  been 
  taken 
  with 
  other 
  leaf-hoppers 
  on 
  

   sugar 
  beets, 
  but 
  they 
  are 
  not 
  common 
  enough 
  as 
  yet 
  to 
  be 
  of 
  any 
  

   economic 
  importance. 
  Both 
  occur 
  in 
  Illinois 
  on 
  corn 
  and 
  rye. 
  We 
  

   have 
  taken 
  abdominalis 
  from 
  wheat 
  and 
  grass, 
  and 
  Gillette 
  and 
  Baker 
  

   record 
  it 
  from 
  sugar 
  beets 
  and 
  barley. 
  We 
  have 
  found 
  impictus 
  on 
  sugar 
  

   beets, 
  wheat, 
  rye, 
  blue-grass 
  and 
  other 
  grasses, 
  and 
  in 
  groves. 
  The 
  

  

  