﻿— 
  117 
  — 
  . 
  

  

  what 
  later. 
  A 
  dipterous 
  parasite 
  {^Hypostena 
  barbatd) 
  was 
  bred 
  by 
  us 
  

   in 
  June 
  from 
  the 
  beetle. 
  

  

  Disonycha 
  cervicalis 
  Lee. 
  

   This 
  species 
  is 
  yellow 
  and 
  black 
  like 
  D. 
  xanthomelcBna, 
  but 
  differs 
  

   in 
  the 
  fact 
  that 
  the 
  body 
  is 
  entirely 
  yellow 
  beneath, 
  while 
  in 
  xantho7ne- 
  

   IcBna 
  the 
  under 
  side 
  of 
  the 
  thorax 
  is 
  black. 
  It 
  is 
  recorded 
  by 
  Bruner 
  as 
  

   a 
  beet 
  insect 
  in 
  Nebraska. 
  Although 
  it 
  occurs 
  in 
  Georgia 
  we 
  have 
  not 
  

   yet 
  seen 
  it 
  in 
  Illinois. 
  

  

  Crepidodera 
  atriveniris 
  Melsh. 
  

   A 
  tiny 
  clay-colored 
  species, 
  of 
  whose 
  habits 
  little 
  is 
  known. 
  It 
  was 
  

   found 
  by 
  us 
  on 
  sugar 
  beets 
  in 
  early 
  October, 
  and 
  is 
  recorded 
  by 
  Web- 
  

   ster 
  from 
  buckwheat 
  September 
  7th. 
  It 
  is 
  common 
  in 
  Illinois, 
  where 
  

   it 
  hibernates 
  as 
  an 
  adult, 
  occurring 
  in 
  our 
  collections 
  in 
  December 
  and 
  

   March. 
  Our 
  specimens 
  have 
  been 
  taken, 
  however, 
  mainly 
  late 
  in 
  April, 
  

   in 
  May, 
  and 
  in 
  July. 
  

  

  The 
  Potato 
  Flea-beetle. 
  

   Epitrix 
  cucumeris 
  Harr. 
  

  

  This 
  very 
  small, 
  blackish, 
  faintly 
  shining, 
  minutely 
  punctured 
  spe- 
  

   cies 
  lives 
  as 
  a 
  larva, 
  so 
  far 
  as 
  known, 
  only 
  on 
  the 
  roots 
  of 
  solanaceous 
  

   plants 
  (potato, 
  tomato, 
  egg-plant, 
  tobacco, 
  etc.). 
  The 
  beetles 
  are 
  also 
  

   practically 
  confined 
  to 
  plants 
  of 
  this 
  order 
  for 
  food 
  when 
  these 
  are 
  

   available, 
  but, 
  nevertheless, 
  infest 
  other 
  plants 
  occasionally. 
  They 
  

   have 
  been 
  found 
  abundant 
  in 
  Nebraska 
  on 
  the 
  potato, 
  horse-nettle, 
  and 
  

   on 
  beets, 
  riddling 
  the 
  leaves 
  of 
  all 
  these 
  plants 
  with 
  minute 
  holes. 
  We 
  

   have 
  taken 
  them 
  several 
  times 
  in 
  small 
  numbers 
  on 
  sugar 
  beets 
  in 
  Illi- 
  

   nois. 
  They 
  are 
  also 
  recorded 
  as 
  injurious 
  to 
  celery, 
  sweet-potatoes, 
  

   raspberry, 
  turnip, 
  cabbage, 
  and 
  petunia, 
  and 
  have 
  been 
  found 
  by 
  us 
  

   doing 
  much 
  injury 
  to 
  young 
  potatoes 
  by 
  gnawing 
  the 
  sprouts. 
  The 
  larvae 
  

   are 
  not 
  leaf-miners, 
  as 
  they 
  are 
  often 
  said 
  to 
  be, 
  but 
  feed 
  upon 
  the 
  roots, 
  

   being 
  especially 
  injurious 
  to 
  those 
  of 
  the 
  potato, 
  tomato, 
  and 
  egg-plant. 
  

   They 
  bore 
  into 
  potatoes, 
  often 
  making 
  them 
  "pimply." 
  

  

  There 
  is 
  probably 
  but 
  one 
  brood 
  in 
  a 
  year, 
  the 
  eggs 
  being 
  laid 
  in 
  

   June, 
  the 
  larvae 
  feeding 
  in 
  June 
  and 
  July, 
  and 
  pupating 
  in 
  the 
  earth. 
  

   The 
  adults, 
  issuing 
  in 
  July 
  and 
  August, 
  hibernate, 
  and 
  feed 
  again 
  in 
  

   spring, 
  disappearing 
  after 
  the 
  eggs 
  are 
  laid 
  in 
  June. 
  They 
  are 
  some- 
  

   times 
  parasitized 
  by 
  a 
  hymenopterous 
  insect, 
  probably 
  one 
  of 
  the 
  Bra- 
  

   conidce. 
  The 
  proximity 
  of 
  beets 
  to 
  any 
  of 
  the 
  cultivated 
  food 
  plants 
  

   mentioned 
  above 
  or 
  to 
  Jamestown 
  weed 
  and 
  other 
  wild 
  members 
  of 
  its 
  

   favorite 
  family 
  would 
  of 
  course 
  expose 
  the 
  beet 
  field 
  to 
  injury 
  by 
  this 
  

   insect. 
  

  

  