﻿AQUATIC 
  INSECTS 
  IN 
  THE 
  ADIRONDACKS 
  465 
  

  

  1892 
  Aeschua 
  vinos 
  a 
  Banks, 
  Am. 
  ent. 
  soc. 
  Trans. 
  19 
  : 
  353 
  (listed 
  from 
  New 
  

  

  York) 
  

  

  1893 
  Fonscolombia 
  vinosa 
  Calvert, 
  Am. 
  ent. 
  soc. 
  Trans. 
  20:247 
  (de- 
  

  

  scription) 
  

   1895-97 
  Fonscolombia 
  vinosa 
  Calvert, 
  N. 
  Y. 
  ent. 
  soc. 
  Jour. 
  3 
  : 
  45 
  and 
  5 
  : 
  93 
  

   (listed 
  from 
  Keeseville, 
  Ithaca, 
  Schoharie, 
  Piseco 
  lake. 
  Elk 
  lake, 
  Colden, 
  

   and 
  Westchester 
  co.) 
  

  

  1899 
  Fonscolombia 
  vinosa 
  KelJicott, 
  Odon. 
  Ohio, 
  p. 
  90 
  (description) 
  

  

  1900 
  Boyeria 
  vinosa 
  Williamson, 
  Draofou 
  flies 
  In 
  d. 
  p. 
  300-1 
  (description) 
  

   1881 
  Neurae 
  schn 
  a 
  vinosa 
  Cabot, 
  (Nymph) 
  Mus. 
  compar. 
  zool. 
  Mem. 
  

  

  8 
  : 
  29, 
  39, 
  pi. 
  2, 
  fig. 
  3 
  

  

  This 
  interesting 
  species, 
  which 
  seems 
  likely 
  to 
  be 
  found 
  inhabiting 
  

   almost 
  'every 
  woodland 
  creek 
  in 
  the 
  state, 
  was 
  very 
  common 
  at 
  Saranac 
  

   Inn 
  in 
  Little 
  Clear 
  creek, 
  and 
  in 
  the 
  borders 
  of 
  the 
  pond 
  above. 
  The 
  

   nymphs 
  were 
  transforming 
  commonly 
  on 
  the 
  sides 
  of 
  timbers 
  in 
  the 
  edge 
  

   of 
  the 
  water 
  from 
  the 
  beginning 
  of 
  our 
  session 
  till 
  the 
  latter 
  end 
  of 
  July. 
  

   A 
  number 
  of 
  both 
  sexes 
  were 
  reared 
  in 
  our 
  cages. 
  A 
  few 
  imagos 
  might 
  

   be 
  seen, 
  specially 
  afternoons 
  in 
  favorable 
  weather 
  from 
  midsummer 
  till 
  

   the 
  end 
  of 
  our 
  session, 
  about 
  the 
  creek 
  on 
  the 
  hatchery 
  grounds. 
  They 
  

   glide 
  along 
  above 
  the 
  stream, 
  not 
  veiy 
  rapidly, 
  on 
  well 
  poised, 
  transpar- 
  

   ent 
  wings, 
  which 
  against 
  the 
  background 
  of 
  the 
  water 
  are 
  well 
  nigh 
  in- 
  

   visible. 
  The 
  two 
  big 
  round 
  yellow 
  spots 
  on 
  each 
  side 
  of 
  the 
  thorax 
  dis- 
  

   tinguish 
  this 
  species 
  from 
  all 
  its 
  kin, 
  even 
  while 
  in 
  flight. 
  

  

  The 
  nymphs, 
  which 
  are 
  generally 
  quite 
  dark 
  colored, 
  seem 
  to 
  prefer 
  

   timbers, 
  trailing 
  roots, 
  driftwood, 
  etc., 
  as 
  a 
  foraging 
  ground. 
  I 
  have 
  

   rarely 
  taken 
  them 
  from 
  green 
  vegetation. 
  

  

  Nymph. 
  Total 
  length 
  $ 
  33, 
  $36 
  mm; 
  abdomen, 
  $ 
  22.5, 
  $25 
  mm; 
  

   hind 
  femur 
  5.5 
  mm; 
  width 
  of 
  head 
  7 
  mm, 
  of 
  abdomen 
  7.5 
  mm. 
  

  

  Body 
  elongate, 
  slender, 
  smooth; 
  color 
  blackish 
  brown, 
  obscurely 
  

   marked 
  with 
  paler 
  in 
  transverse 
  rings 
  on 
  the 
  legs, 
  and 
  in 
  dashes, 
  tending 
  

   to 
  become 
  arranged 
  in 
  interrupted, 
  longitudinal 
  rows 
  on 
  the 
  abdomen. 
  

  

  Head 
  concave 
  behind, 
  with 
  truncated 
  hind 
  angles; 
  sides 
  straight, 
  

   diverging 
  strongly 
  anteriorly 
  to 
  meet 
  the 
  very 
  prominent 
  eyes 
  ; 
  labium 
  

   moderate; 
  middle 
  third 
  of 
  fi»nt 
  margin 
  of 
  median 
  lobe 
  straight, 
  with 
  a 
  

   tooth 
  at 
  each 
  side 
  remote 
  from 
  the 
  median 
  cleft. 
  

  

  Abdomen 
  widest 
  across 
  the 
  fifth 
  and 
  sixth 
  segments, 
  tapering 
  unequally 
  

   to 
  the 
  ends 
  ; 
  no 
  dorsal 
  hooks 
  ; 
  lateral 
  spines 
  on 
  segments 
  5-9, 
  on 
  5 
  

   small, 
  on 
  6-9 
  conspicuous, 
  increasing 
  a 
  little 
  in 
  size 
  posteriorly, 
  those 
  of 
  

   the 
  ninth 
  segment 
  three 
  fourths 
  as 
  long 
  as 
  the 
  loth 
  segment; 
  the 
  ab- 
  

   dominal 
  segments 
  are 
  longest 
  in 
  the 
  middle, 
  and 
  decrease 
  a 
  little 
  toward 
  

   both 
  ends; 
  the 
  appendages 
  are 
  longer 
  than 
  the 
  last 
  two 
  segments 
  

   together, 
  and 
  differ 
  in 
  the 
  two 
  sexes 
  in 
  the 
  form 
  of 
  the 
  apex 
  of 
  the 
  super- 
  

   ior 
  appendage; 
  in 
  the 
  $ 
  this 
  has 
  a 
  distinct 
  narrow 
  apical 
  cleft, 
  in 
  the 
  ? 
  

   the 
  cleft 
  is 
  closed 
  when 
  grown 
  ; 
  in 
  small 
  female 
  nymphs, 
  however, 
  I 
  have 
  

   seen 
  it 
  quite 
  as 
  widely 
  open 
  and 
  as 
  distinct 
  as 
  in 
  the 
  male 
  : 
  in 
  both 
  sexes 
  

  

  