﻿AQUATIC 
  INSECTS 
  IN 
  THE 
  ADIRONDACKS 
  

  

  497 
  

  

  Helocordulia 
  uhleri 
  Selys 
  

  

  1871 
  Cordulia 
  uhleri 
  Selys, 
  Acad. 
  Belg. 
  (2) 
  Bui. 
  21:274 
  

  

  1890 
  Neurocordulia 
  uhleri 
  Beutenmiiller, 
  Dragon 
  flies 
  vs 
  mosquitos, 
  

  

  p. 
  164 
  (listed 
  from 
  New 
  York) 
  

   1895 
  Neurocordulia 
  uhleri 
  Calvert, 
  N. 
  Y. 
  ent. 
  soc. 
  Jour. 
  3:46 
  (listed 
  

  

  from 
  New 
  York) 
  

  

  This 
  species 
  was 
  not 
  uncommon 
  in 
  Little 
  Clear 
  creek 
  on 
  the 
  hatchery 
  

   grounds. 
  Imagos 
  were 
  seen 
  flying 
  a 
  few 
  times 
  about 
  the 
  banks 
  of 
  Little 
  

   Clear 
  pond 
  close 
  in 
  shore 
  and 
  low 
  above 
  the 
  water. 
  They 
  are 
  so 
  swift 
  

   and 
  agile, 
  and 
  their 
  wings 
  are 
  so 
  transparent 
  that 
  the 
  eye 
  follows 
  them 
  

   with 
  difflculty. 
  They 
  are 
  not 
  very 
  difficult 
  to 
  capture 
  however, 
  if 
  one 
  

   will 
  place 
  himself 
  beside 
  a 
  regular 
  " 
  beat 
  ", 
  and 
  bring 
  his 
  net 
  up 
  behind 
  

   the 
  dragon 
  fly 
  with 
  a 
  quick 
  stroke 
  when 
  it 
  is 
  passing. 
  I 
  found 
  the 
  ima- 
  

   gos 
  showing 
  no 
  disposition 
  to 
  avoid 
  me 
  even 
  after 
  escaping 
  a 
  stroke 
  of 
  

   the 
  net 
  several 
  times. 
  Twice 
  I 
  saw 
  three 
  males 
  chasing 
  one 
  another 
  up 
  

   and 
  down 
  Little 
  Clear 
  creek, 
  and 
  had 
  little 
  difficulty 
  in 
  capturing 
  them. 
  

  

  The 
  nymph 
  was 
  not 
  reared. 
  Some 
  of 
  them, 
  apparently 
  about 
  grown, 
  

   were 
  kept 
  through 
  the 
  season 
  without 
  result. 
  Apparently, 
  the 
  season 
  for 
  

   their 
  transformation 
  was 
  over 
  before 
  any 
  were 
  found, 
  There 
  can 
  be 
  

  

  Fig 
  22 
  Parts 
  of 
  nymph 
  of 
  Helocordulia 
  uhleri 
  Selys. 
  a 
  dorsal 
  view 
  of 
  the 
  head 
  ; 
  h 
  labium, 
  

   from 
  within, 
  details 
  in 
  part 
  omitted 
  on 
  the 
  right 
  ; 
  c 
  a 
  single 
  tooth 
  from 
  the 
  front 
  border 
  of 
  the 
  

   lateral 
  lobe 
  of 
  the 
  labium 
  ; 
  d 
  dorsal 
  view 
  of 
  the 
  abdomen 
  ; 
  e 
  lateral 
  view 
  of 
  apex 
  of 
  abdomen, 
  to 
  

   '■Show 
  better 
  the 
  dorsal 
  hooks 
  

  

  scarcely 
  a 
  doubt, 
  however, 
  as 
  to 
  the 
  correctness 
  of 
  the 
  reference 
  of 
  them 
  

   to 
  this 
  species, 
  when 
  one 
  considers 
  that 
  the 
  only 
  other 
  corduline 
  observed 
  

   here 
  hke 
  this 
  one 
  in 
  size 
  was 
  D 
  . 
  libera, 
  which 
  I 
  reared. 
  

  

  The 
  nymphs 
  live 
  in 
  the 
  borders 
  of 
  the 
  creek, 
  mainly 
  in 
  the 
  shallow 
  

   places, 
  filled 
  with 
  red-rotten 
  vegetable 
  debris 
  — 
  the 
  haunts 
  of 
  the 
  giant 
  

  

  