﻿— 
  90 
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  The 
  Green 
  Leaf-bug. 
  

  

  Macrocoleus 
  chlorionis 
  Say*. 
  

  

  (PI. 
  IV., 
  Fig. 
  I.) 
  

  

  Except 
  the 
  tarnished 
  plant-bug, 
  this 
  little 
  grass-green 
  insect 
  is 
  the 
  

   commonest 
  leaf-bug 
  on 
  the 
  sugar 
  beet 
  in 
  Illinois. 
  Young 
  were 
  taken 
  

   on 
  beets 
  in 
  the 
  latter 
  part 
  of 
  June, 
  and 
  in 
  July 
  it 
  was 
  mostly 
  adult. 
  It 
  

   was 
  at 
  this 
  time 
  very 
  common 
  in 
  beet 
  fields, 
  flying 
  up 
  from 
  the 
  larger 
  

   plants 
  whenever 
  these 
  were 
  disturbed. 
  Later 
  it 
  became 
  less 
  abundant, 
  

   and 
  by 
  September 
  ist 
  had 
  almost 
  disappeared, 
  although 
  occasional 
  

   specimens 
  were 
  taken 
  on 
  beets 
  as 
  late 
  as 
  October 
  loth. 
  A 
  common 
  

   whitish 
  mottling 
  of 
  the 
  leaves 
  was 
  attributed 
  by 
  us 
  to 
  the 
  abundance 
  of 
  

   this 
  leaf-bug. 
  It 
  seems 
  to 
  have 
  a 
  special 
  liking 
  for 
  the 
  beet, 
  as 
  we 
  have 
  

   not 
  found 
  it 
  common 
  on 
  other 
  plants 
  although 
  we 
  have 
  taken 
  it 
  in 
  small 
  

   numbers 
  at 
  many 
  localities 
  in 
  central 
  and 
  southern 
  Illinois. 
  It 
  is 
  nearly 
  

   a 
  uniform 
  green, 
  the 
  thorax 
  only 
  a 
  little 
  darker, 
  the 
  legs 
  and 
  antennae 
  

   yellowish, 
  and 
  the 
  eyes 
  and 
  the 
  tips 
  of 
  the 
  antennae 
  blackish. 
  The 
  wing 
  

   membranes 
  are 
  dusky 
  and 
  the 
  upper 
  surface 
  of 
  the 
  body 
  is 
  sparsely 
  

   covered 
  with 
  short 
  black 
  hairs. 
  It 
  is 
  to 
  some 
  extent 
  nocturnal, 
  and 
  it 
  

   has 
  been 
  taken 
  by 
  us 
  at 
  electric 
  lights. 
  

  

  Garganus 
  fusiformis 
  Say. 
  

  

  Very 
  little 
  is 
  known 
  of 
  the 
  habits 
  of 
  this 
  handsome 
  and 
  not 
  very 
  

  

  common 
  leaf-bug. 
  It 
  was 
  taken 
  by 
  us 
  on 
  sugar 
  beets 
  in 
  September, 
  

  

  and 
  the 
  adult 
  has 
  occurred 
  elsewhere 
  in 
  our 
  collections 
  from 
  June 
  loth 
  

  

  to 
  October 
  8th. 
  It 
  is 
  widely 
  distributed 
  over 
  the 
  eastern 
  United 
  States. 
  

  

  Eccritotarsus 
  elegans 
  Uhler. 
  

   This 
  beautiful 
  little 
  capsid 
  is 
  comparatively 
  rare, 
  but 
  as 
  two-thirds 
  

   of 
  the 
  specimens 
  in 
  our 
  collections 
  were 
  taken 
  on 
  sugar 
  beets 
  it 
  is 
  

   deserving 
  of 
  mention 
  here. 
  It 
  is 
  reported 
  from 
  Illinois, 
  California, 
  

   Texas, 
  and 
  Kansas. 
  

  

  The 
  Tarnished 
  Plant-bug. 
  

   Lygiis 
  pratensis 
  Linn. 
  

   Chief 
  among 
  the 
  leaf-bugs 
  is 
  this 
  very 
  abundant 
  and 
  widely 
  distributed 
  

   insect. 
  It 
  is 
  nearly 
  a 
  quarter 
  of 
  an 
  inch 
  long, 
  brassy 
  brown, 
  minutely 
  and 
  

   variably 
  streaked 
  arid 
  spotted 
  with 
  yellow, 
  often 
  with 
  black 
  marks 
  on 
  the 
  

   thorax 
  which 
  are 
  darkest 
  and 
  thickest 
  in 
  front. 
  The 
  young 
  are 
  greenish, 
  

   of 
  course 
  without 
  wings, 
  the 
  older 
  of 
  them 
  with 
  two 
  pairs 
  of 
  round 
  

  

  *Mr. 
  Ashmead 
  has 
  informed 
  us 
  that 
  specimens 
  sent 
  him 
  by 
  us 
  represent 
  a 
  new 
  species 
  of 
  the 
  genus 
  

   Macrocoleus 
  : 
  but 
  among 
  Say's 
  unrecognized 
  descriptions 
  of 
  Capsidte 
  is 
  one 
  of 
  Capsus 
  chlorionis 
  

   (Leconte 
  edition, 
  I., 
  p. 
  346) 
  which 
  sufficiently 
  characterizes 
  our 
  specimens 
  to 
  warrant 
  the 
  adoption 
  of 
  his 
  

   name 
  for 
  the 
  species. 
  The 
  coloration 
  of 
  our 
  specimens 
  and 
  the 
  relative 
  lengths 
  of 
  the 
  antennal 
  joints 
  are 
  

   exactly 
  as 
  described 
  by 
  him. 
  

  

  