﻿AQUATIC 
  INSECTS 
  IN 
  THE 
  ADIRONDACKS 
  569 
  

  

  Case. 
  (PI. 
  S3, 
  fig. 
  2) 
  Case 
  of 
  irregular 
  pieces 
  of 
  wood 
  placed 
  

   longitudinally 
  with 
  slender 
  stick 
  extending 
  beyond 
  the 
  posterior 
  end. 
  

   Length 
  23 
  mm. 
  Width 
  8 
  mm. 
  Length 
  of 
  stick 
  beyond 
  the 
  case 
  about 
  

   19 
  mm. 
  

  

  Larva. 
  (PI. 
  32, 
  fig. 
  2) 
  Length 
  18 
  mm. 
  Width 
  4 
  mm. 
  Head, 
  

   prothorax 
  and 
  mesothorax 
  reddish 
  brown 
  with 
  a 
  pattern 
  of 
  black 
  spots. 
  

   Mesothorax 
  has 
  right 
  angled 
  black 
  lines 
  in 
  the 
  

   posterior 
  corners. 
  Metathorax 
  is 
  yellowish 
  

   brown. 
  Legs 
  brown, 
  margined 
  with 
  black. 
  

   Spurs 
  on 
  the 
  tibiae 
  arranged 
  in 
  order 
  2-2-2. 
  

   Abdomen 
  whitish 
  with 
  red 
  patch 
  on 
  the 
  

   dorsal 
  side. 
  Respiratory 
  filaments 
  occur 
  with 
  

   or 
  near 
  the 
  divisions 
  between 
  the 
  abdominal 
  

   segments. 
  Beginning 
  at 
  the 
  division 
  between 
  

  

  ^■L 
  /. 
  ^ 
  J 
  , 
  , 
  . 
  Fig. 
  39 
  Dorsal 
  view 
  of 
  end 
  of 
  ab* 
  

  

  the 
  iirst 
  and 
  second 
  segments, 
  they 
  occur 
  in 
  domen 
  of 
  larva 
  

  

  the 
  following 
  order 
  on 
  the 
  dorsum, 
  o, 
  o, 
  3, 
  3, 
  2, 
  i, 
  o, 
  o, 
  a. 
  

   On 
  the 
  ventral 
  side 
  their 
  arrangement 
  is 
  o, 
  o, 
  3, 
  3, 
  3, 
  2, 
  2, 
  

   I, 
  o. 
  Anal 
  hooks 
  are 
  on 
  two-jointed 
  prolegs. 
  

  

  Pupa. 
  (PI. 
  33, 
  fig. 
  5) 
  Length 
  19 
  mm. 
  Width 
  4 
  mm. 
  

   Antennae 
  16 
  mm. 
  Wings 
  8 
  mm. 
  3 
  ocelH. 
  Head 
  reddish 
  

   yellow. 
  Thorax 
  and 
  legs 
  yellow. 
  Spurs 
  on 
  the 
  tibiae 
  

   arranged 
  in 
  order 
  i, 
  3, 
  3. 
  Black 
  spines 
  numerous 
  on 
  the 
  

   legs. 
  Abdomen 
  white 
  with 
  reddish 
  brown 
  above 
  and 
  yellow 
  

   beneath. 
  Heavy 
  black 
  fringe 
  along 
  the 
  rear 
  four 
  segments. 
  

  

  Fig. 
  40 
  Lateral 
  ^ 
  o 
  o 
  o 
  

  

  S)domin?i 
  8^^- 
  Ho<^^s 
  pointing 
  backward 
  on 
  the 
  anterior 
  edge 
  of 
  third, 
  

  

  iSrva 
  ^^ 
  *^® 
  fourth, 
  fifth, 
  sixth 
  and 
  seventh 
  segments. 
  Plates 
  with 
  spikes' 
  

  

  pointing 
  forward 
  at 
  the 
  posterior 
  margin 
  of 
  fifth 
  segment. 
  Respiratory 
  

  

  filaments 
  remain. 
  

  

  3 
  Halesus 
  species? 
  

  

  Plate 
  32, 
  figures 
  3 
  and 
  6; 
  plate 
  33, 
  figure 
  3 
  

  

  Habitat. 
  Larvae 
  and 
  pupae 
  found 
  in 
  Little 
  Clear 
  creek. 
  

  

  Occurrence. 
  Larvae 
  quite 
  common 
  throughout 
  the 
  period. 
  Pupae 
  

   found 
  only 
  during 
  the 
  last 
  four 
  days 
  of 
  the 
  session. 
  

  

  Case. 
  (PI. 
  33, 
  fig. 
  3) 
  Cylindric 
  case 
  of 
  wood 
  and 
  sand 
  or 
  small 
  

   stones, 
  often 
  finely 
  colored. 
  Length 
  24 
  mm. 
  Width 
  6 
  mm. 
  

  

  Larva. 
  (PI. 
  32, 
  fig. 
  3) 
  Length 
  16 
  mm. 
  Width 
  4 
  mm. 
  Fewer 
  

   black 
  spots 
  on 
  head 
  but 
  otherwise 
  same 
  as 
  larva 
  just 
  described. 
  The 
  

   length 
  of 
  the 
  pupae 
  of 
  this 
  species 
  would 
  seem 
  to 
  indicate 
  that 
  the 
  larvae 
  

   taken 
  were 
  not 
  full 
  grown. 
  

  

  