﻿, 
  AQUATIC 
  INSECTS 
  IN 
  THE 
  ADIRONDACKS 
  581 
  

  

  ments 
  are 
  much 
  the 
  same, 
  but 
  the 
  individual 
  tubercles 
  are 
  in 
  general 
  

   a 
  little 
  more 
  distinct 
  in 
  T. 
  p 
  i 
  c 
  t 
  i 
  p 
  e 
  s 
  ; 
  the 
  brush 
  of 
  hooked 
  bristles 
  on 
  

   the 
  dorsal 
  locomotor 
  tubercles 
  is 
  a 
  httle 
  shorter 
  (this 
  is 
  omitted 
  altogether 
  

   from 
  Dufour's 
  figure 
  of 
  the 
  larva 
  of 
  T. 
  ferruginea); 
  there 
  are 
  four 
  

   fairly 
  distinct 
  lateral 
  tubercles 
  each 
  side 
  in 
  the 
  median 
  ring 
  of 
  the 
  seg- 
  

   ment 
  ; 
  the 
  subterminal 
  ring 
  of 
  lesser 
  tubercles 
  is 
  less 
  distinct 
  than 
  in 
  

   S. 
  fuscipennis, 
  except 
  on 
  the 
  ventral 
  side 
  where 
  it 
  is 
  more 
  distinct, 
  

   and 
  has 
  the 
  pair 
  of 
  little 
  tubercles 
  beside 
  the 
  midventral 
  line 
  fused 
  more 
  

   or 
  less 
  completely 
  into 
  one. 
  

  

  The 
  respiratory 
  float 
  at 
  the 
  end 
  of 
  the 
  body 
  (pi. 
  36, 
  fig. 
  4) 
  is 
  similar 
  

   to 
  that 
  of 
  S. 
  fuscipennis, 
  but 
  is 
  a 
  little 
  less 
  copiously 
  fringed, 
  and 
  

   the 
  fringe 
  is 
  a 
  little 
  shorter, 
  reaching 
  but 
  about 
  two 
  thirds 
  of 
  the 
  distance 
  

   to 
  the 
  margin 
  of 
  the 
  disk. 
  The 
  fleshy 
  processes 
  and 
  tubercles 
  bordering 
  

   the 
  disk 
  are 
  very 
  different. 
  The 
  ventral, 
  submedian 
  pair 
  of 
  processes 
  are 
  

   broad 
  and 
  blunt. 
  The 
  lateral 
  processes 
  have 
  a 
  broad 
  obtuse 
  base 
  sup- 
  

   porting 
  a 
  slender 
  second 
  joint. 
  The 
  tubercles 
  forming 
  the 
  dorsal 
  border 
  

   of 
  the 
  disk, 
  excepting 
  the 
  external 
  one 
  each 
  side, 
  are 
  nearly 
  obsolete. 
  

   By 
  the 
  characters 
  mentioned 
  in 
  this 
  paragraph 
  the 
  larva 
  of 
  this 
  species 
  

   (possibly, 
  of 
  this 
  genus) 
  may 
  readily 
  be 
  distinguished 
  from 
  S 
  e 
  p 
  e 
  d 
  o 
  n 
  — 
  

   at 
  least, 
  from 
  Sepedon 
  fuscipennis. 
  

  

  Puparium. 
  (PI. 
  14, 
  fig. 
  n, 
  12) 
  Length 
  6 
  mm; 
  diameter 
  2 
  mm. 
  

  

  Color 
  reddish 
  brown, 
  more 
  reddish 
  on 
  the 
  obsolescent 
  larval 
  tubercles, 
  

   and 
  on 
  the 
  upper 
  side 
  of 
  the 
  beak 
  into 
  which 
  the 
  body 
  is 
  contracted 
  at 
  

   the 
  front 
  end. 
  There 
  is 
  no 
  black 
  arcuate 
  mark 
  at 
  the 
  base 
  of 
  the 
  beak 
  

   on 
  the 
  dorsal 
  side. 
  

  

  Body 
  more 
  slender 
  than 
  in 
  Sepedon, 
  less 
  convex 
  below, 
  less 
  

   flattened 
  above, 
  though 
  of 
  much 
  the 
  same 
  general 
  appearance. 
  The 
  tail- 
  

   like 
  prominence 
  at 
  the 
  posterior 
  end 
  bears 
  at 
  its 
  apex 
  the 
  unaltered 
  

   larval 
  float, 
  and 
  at 
  its 
  sides 
  the 
  scarcely 
  distinguishable 
  remains 
  of 
  the 
  

   processes 
  and 
  tubercles 
  which 
  surrounded 
  the 
  caudal 
  disk 
  of 
  the 
  larva. 
  

   This 
  " 
  tail 
  " 
  is 
  bent 
  upward 
  at 
  an 
  angle 
  of 
  about 
  45° 
  with 
  the 
  axis 
  of 
  the 
  

   body. 
  By 
  this 
  lesser 
  degree 
  of 
  angulation, 
  as 
  well 
  as 
  by 
  the 
  general 
  

   slenderness 
  of 
  form, 
  this 
  species 
  is 
  readily 
  distinguished 
  from 
  S. 
  fusci- 
  

   pennis 
  in 
  the 
  pupal 
  stage. 
  

  

  Roederiodes 
  juncta 
  Coquillet 
  

  

  Plate 
  15, 
  flg. 
  5-8 
  

  

  The 
  reader 
  is 
  referred 
  to 
  page 
  586 
  for 
  the 
  technical 
  description 
  of 
  the 
  

   imago 
  of 
  this 
  species. 
  It 
  was 
  found 
  in 
  a 
  rapids 
  in 
  Little 
  Clear 
  creek 
  just 
  

   below 
  the 
  railroad 
  embankment. 
  Larvae 
  and 
  pupae 
  were 
  found 
  first, 
  the 
  

   former 
  crawling 
  among 
  the 
  pupa 
  cases 
  of 
  S 
  i 
  m 
  u 
  1 
  i 
  u 
  m 
  , 
  the 
  latter 
  

   usually 
  resting 
  within 
  an 
  abandoned 
  Simulium 
  pupa 
  case. 
  After 
  

   these 
  had 
  been 
  bred, 
  the 
  imagos 
  were 
  found, 
  clinging 
  in 
  companies 
  to 
  

   the 
  under 
  side 
  of 
  pieces 
  of 
  boards 
  which 
  rested 
  just 
  above 
  the 
  level 
  of 
  

   the 
  water. 
  They 
  were 
  not 
  seen 
  flying, 
  except 
  when 
  disturbed, 
  and 
  then 
  

   they 
  took 
  flight 
  slowly 
  and 
  flew 
  poorly. 
  A 
  piece 
  of 
  board 
  might 
  be 
  lifted 
  

   with 
  a 
  score 
  of 
  the 
  flies 
  sticking 
  to 
  it 
  within 
  an 
  area 
  of 
  a 
  few 
  square 
  

   inches, 
  and 
  most 
  of 
  them 
  could 
  be 
  gathered 
  into 
  a 
  cyanid 
  bottle 
  before 
  

  

  