﻿AQUATIC 
  INSECTS 
  IN 
  THE 
  ADIRONDACKS 
  451 
  

  

  Gomphus 
  fraternus 
  Say 
  

  

  1839 
  Aesclma 
  fraterua 
  Say, 
  Acad. 
  nat. 
  sci. 
  Phil. 
  Jour. 
  8: 
  16 
  

  

  1861 
  Gomphus 
  fraternus 
  Hagen, 
  Synopsis 
  Neur. 
  N. 
  Am. 
  p. 
  104 
  

  

  1862 
  Gomphus 
  fraternus 
  Walsh, 
  Acad. 
  nat. 
  sci. 
  Phil. 
  Proc. 
  p. 
  393 
  

  

  1863 
  Gomphus 
  fraternus 
  Walsh, 
  Ent. 
  soc. 
  Phil. 
  Proc. 
  2:238 
  

  

  1890 
  Aeshna 
  fraterna 
  Kirby, 
  Cat. 
  Neur. 
  Odon. 
  p. 
  66 
  (bibliography) 
  

   1892 
  Gomphus 
  fraternus 
  Banks, 
  Am. 
  ent. 
  soc. 
  Trans. 
  19:352 
  (listed) 
  

  

  1894 
  Gomphus 
  fraternus 
  Banks, 
  Can. 
  ent. 
  26 
  : 
  77 
  (listed 
  from 
  Ithaca) 
  

  

  1895 
  Gomphus 
  fraternus 
  Calvert, 
  N. 
  Y. 
  ent. 
  soc. 
  Jour. 
  3:45 
  (listed 
  from 
  

  

  Ithaca) 
  

   1897 
  Gomphus 
  fraternus 
  Van 
  Duzee, 
  N. 
  Y. 
  ent. 
  soc. 
  Jour. 
  5 
  : 
  89 
  (listed 
  

  

  from 
  Niagara) 
  

   1897 
  Gomphus 
  fraternus 
  Calvert, 
  N. 
  Y. 
  ent. 
  soc. 
  Jour. 
  5:93 
  (listed) 
  

  

  1899 
  Gomphus 
  fraternus 
  Kellicott, 
  Odon. 
  Ohio, 
  p. 
  59 
  (description 
  and 
  

  

  figures) 
  

  

  1900 
  Gomphus 
  fraternus 
  Williamson, 
  Dragon 
  flies 
  Ind. 
  p. 
  289 
  (descrip- 
  

  

  tion 
  and 
  figures) 
  

   1897 
  Gomphus 
  fraternus 
  Needham, 
  (nymph) 
  Can. 
  ent. 
  29, 
  pi. 
  7, 
  fig. 
  11 
  

   and 
  12 
  (figures 
  only; 
  those 
  are 
  reproduced 
  in 
  plate 
  20 
  of 
  this 
  bulletin) 
  

  

  This 
  vigorous 
  species 
  seems 
  to 
  prefer 
  the 
  larger 
  bodies 
  of 
  water. 
  The 
  

   imago 
  is 
  a 
  very 
  strong 
  flyer. 
  It 
  skirts 
  the 
  edge 
  of 
  streams 
  with 
  dashing 
  

   sweeps 
  which 
  seem 
  to 
  proclaim 
  it 
  master 
  of 
  the 
  situation. 
  I 
  have 
  several 
  

   times 
  seen 
  it 
  feeding 
  on 
  other 
  dragon 
  flies 
  as 
  large 
  as 
  Mesothemis 
  

   -simplicicollis. 
  The 
  nymph 
  is 
  an 
  active 
  burrower 
  in 
  the 
  bare 
  clay 
  

   bottoms 
  of 
  streams 
  and 
  lakes 
  under 
  water 
  of 
  considerable 
  depth. 
  I 
  

   repeat 
  herewith 
  the 
  figures 
  of 
  the 
  nymph 
  (cited 
  above) 
  and 
  add 
  a 
  brief 
  

   description. 
  

  

  Nymph. 
  Length 
  31 
  mm; 
  abdomen 
  20; 
  hind 
  femur 
  6.5 
  ; 
  width 
  of 
  

   liead 
  5, 
  of 
  abdomen 
  9 
  ; 
  colors 
  obscured 
  ; 
  margins 
  all 
  hairy 
  ; 
  tibial 
  bur- 
  

   rowing 
  hooks 
  very 
  strong, 
  as 
  long 
  as 
  tibia 
  is 
  wide. 
  Third 
  segment 
  of 
  

   antenna 
  twice 
  as 
  long 
  as 
  the 
  first 
  and 
  second 
  together, 
  hairy 
  on 
  margins; 
  

   fourth 
  a 
  minute 
  ovoid 
  rudiment. 
  

  

  Mentum 
  of 
  labrum 
  (pi. 
  20, 
  fig. 
  12) 
  squarish 
  before 
  the 
  contracted 
  basal 
  

   fourth; 
  median 
  lobe 
  very 
  slightly 
  convex, 
  densely 
  frmged; 
  lateral 
  lobe 
  

   bluntly 
  angular 
  at 
  the 
  apex 
  with 
  7-1 
  1 
  small 
  teeth 
  on 
  inner 
  margin. 
  

  

  Abdomen 
  (pi. 
  20, 
  fig. 
  11) 
  broad, 
  depressed, 
  with 
  sides 
  parallel 
  most 
  of 
  

   its 
  length, 
  abruptly 
  narrowed 
  beyond 
  the 
  sixth 
  segment, 
  minute 
  dorsal 
  

   hooks 
  on 
  segments 
  8 
  and 
  9 
  ; 
  median 
  groove 
  on 
  anterior 
  segments, 
  well 
  

   developed 
  lateral 
  spines 
  on 
  segments 
  6-9 
  those 
  of 
  9 
  about 
  equaling 
  the 
  

   appendages. 
  

  

  Gomphus 
  adelphus 
  Selys 
  

  

  1857 
  Gomphus 
  adelphus 
  Selys, 
  Monographie 
  des 
  gomphiues, 
  p. 
  413 
  

   1861 
  Gomphus 
  adelphus 
  Hagen, 
  Synopsis 
  Neur. 
  N. 
  Am. 
  p. 
  104 
  

  

  1896 
  Aeshna 
  adelpha 
  Kirby, 
  Cat. 
  Neur. 
  Odon. 
  p. 
  67 
  (bibliography) 
  

   1892 
  Gomphus 
  adelphus 
  Banks, 
  Am. 
  ent. 
  soc. 
  Tjans. 
  19:351 
  (listed) 
  

  

  