﻿AQUATIC 
  INSECTS 
  IN 
  THE 
  ADIRONDACKS 
  449 
  

  

  Gomphus 
  brevis 
  Hagen 
  

  

  1854 
  Emmons, 
  Agric. 
  N. 
  Y. 
  v. 
  5, 
  Insects, 
  pi. 
  15, 
  fig. 
  2. 
  (colored 
  

  

  fif^nre, 
  no 
  name 
  or 
  description) 
  

   1878 
  Gomphns 
  brevis 
  Hagen, 
  Acad. 
  Belg. 
  (2) 
  Bui. 
  46 
  : 
  461 
  (original 
  de- 
  

  

  8cription^ 
  

   '1890Aesbna 
  brevis 
  Kirby, 
  Cat. 
  Neur. 
  Odon. 
  p. 
  66. 
  (listed) 
  

   1892 
  Gomphus 
  brevis 
  Banks, 
  Am. 
  ent. 
  see. 
  Trans. 
  19:351 
  (listed) 
  

   1895 
  Gomphus 
  brevis 
  Calvert, 
  N. 
  Y. 
  ent. 
  hoc 
  Jonr. 
  3:45 
  

   1897 
  Gomphus 
  b 
  r 
  e 
  v 
  i 
  sj 
  Calvert, 
  N. 
  Y. 
  ent. 
  soc. 
  Jour. 
  5 
  : 
  93 
  

  

  This 
  species, 
  originally 
  described 
  from 
  specimens 
  obtained 
  by 
  Dr 
  

   Lintner 
  at 
  Schoharie 
  N. 
  Y., 
  was 
  common 
  at 
  Saranac 
  Inn. 
  I 
  captured 
  

   but 
  a 
  single 
  imago, 
  and 
  saw 
  but 
  few, 
  but 
  the 
  nymphs 
  were 
  very 
  plentiful 
  

   in 
  Little 
  Clear 
  creek. 
  The 
  few 
  imagos 
  seen 
  flitted 
  about 
  the 
  edge 
  of 
  the 
  

   water 
  in 
  the 
  warm 
  sunshine 
  in 
  a^manner 
  very 
  similar 
  to 
  that 
  of 
  other 
  

   small 
  gomphines; 
  oviposition 
  was 
  not 
  observed. 
  

  

  The 
  season 
  of 
  transformation 
  was 
  apparently 
  about 
  ended 
  on 
  our 
  

   arrival 
  at 
  Saranac 
  Inn 
  in 
  the 
  middle 
  of 
  June; 
  exuviae 
  which 
  I, 
  having 
  

   bied 
  abbreviatus 
  before, 
  was 
  able 
  at 
  once 
  to 
  refer 
  to 
  this 
  species 
  

   were 
  thickly 
  sprinkled 
  over 
  the 
  boards 
  on 
  the 
  sides 
  of 
  the 
  fish 
  ponds 
  

   made 
  by 
  impounding 
  the 
  creek. 
  I 
  collected 
  many 
  of 
  them 
  during 
  the 
  

   first 
  two 
  or 
  three 
  days 
  of 
  our 
  stay 
  ; 
  thereafter 
  but 
  few 
  additional 
  exuviae 
  

   appeared, 
  the 
  season 
  being 
  past. 
  The 
  species 
  was 
  not 
  bred, 
  but 
  there 
  

   can 
  be 
  scarcely 
  a 
  doubt 
  that 
  the 
  nymphs, 
  referred 
  to 
  it 
  here 
  by 
  supposition, 
  

   belong 
  to 
  it. 
  

  

  The 
  original 
  description 
  of 
  this 
  species 
  is 
  not 
  generally 
  accessible 
  in 
  

   this 
  country; 
  no 
  other 
  has 
  been 
  published, 
  apparently. 
  Therefore, 
  be- 
  

   lieving 
  that 
  an 
  accessible 
  English 
  description 
  will 
  be 
  of 
  service 
  to 
  some, 
  

   I 
  give 
  a 
  brief 
  one 
  below, 
  and 
  follow 
  it 
  with 
  a 
  description 
  of 
  the 
  nymph, 
  

   hitherto 
  unknown. 
  

  

  Imago. 
  Measures 
  in 
  total 
  length 
  42-45 
  mm; 
  abdomen 
  30-33 
  mm; 
  

   hind 
  wing 
  25-27 
  mm. 
  

  

  Colors 
  black 
  and 
  screen 
  ; 
  face 
  with 
  heavy 
  black 
  lines 
  on 
  all 
  its 
  sutures 
  

   and 
  margins, 
  these 
  lines 
  sometimes 
  overspreadmg 
  the 
  whole 
  face 
  except 
  

   the 
  upper 
  part 
  of 
  the 
  frons 
  and 
  the 
  sides 
  of 
  the 
  post-clypeas 
  and 
  the 
  

   labium 
  ; 
  rear 
  of 
  the 
  frons, 
  all 
  of 
  the 
  vertex 
  (excepting 
  the 
  tips 
  of 
  its 
  

   horns), 
  and 
  the 
  front 
  and 
  lateral 
  margins 
  of 
  the 
  occiput 
  black; 
  the 
  occi- 
  

   put 
  otherwise 
  clear 
  yellow, 
  distinctly 
  wider 
  and 
  more 
  convex 
  in 
  the 
  

   female. 
  

  

  Middorsal 
  thoracic 
  stripe 
  short, 
  with 
  parallel 
  sides, 
  narrowed 
  to 
  a 
  

   median 
  line 
  before 
  the 
  collar, 
  divided 
  by 
  a 
  yellow 
  carina 
  ; 
  humeral 
  and 
  

   antehumeral 
  stripes 
  contiguous 
  near 
  their 
  upper 
  ends, 
  leaving 
  an 
  isolated 
  

   yellow 
  triangular 
  spot 
  above, 
  and 
  an 
  isolated 
  narrow 
  line 
  below 
  between 
  

   them; 
  midlateral 
  thoracic 
  stripe 
  incomplete 
  above, 
  disappearing 
  above 
  

   the 
  spiracle; 
  stripe 
  on 
  the 
  third 
  lateral 
  suture 
  complete 
  but 
  narrow; 
  legs 
  

   all 
  black 
  ( 
  ^ 
  ) 
  or 
  with 
  the 
  front 
  femora 
  green 
  beneath 
  ( 
  $ 
  ). 
  

  

  Wings 
  hyaline 
  ; 
  costa 
  black 
  ; 
  stigma 
  brown. 
  

  

  