﻿548 
  

  

  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  stump 
  in 
  the 
  edge 
  of 
  the 
  water 
  near 
  the 
  outlet 
  of 
  Little 
  Clear 
  pond. 
  The 
  

   pupal 
  cell 
  was 
  located 
  in 
  red 
  -rotten 
  wood, 
  fracturing, 
  but 
  not 
  crumbling, 
  

   and 
  was 
  about 
  a 
  foot 
  above 
  the 
  level 
  of 
  the 
  water. 
  Soon 
  after 
  trans- 
  

   formation 
  the 
  photograph 
  reproduced 
  in 
  pi. 
  26, 
  fig. 
  i 
  was 
  taken. 
  It 
  

   shows 
  beside 
  the 
  imago, 
  a 
  piece 
  of 
  the 
  stump, 
  the 
  broken 
  cell, 
  and 
  the 
  

   pupal 
  skin. 
  

  

  This 
  is 
  the 
  largest 
  of 
  the 
  ashen 
  gray 
  species 
  of 
  Chauliodes. 
  It 
  meas- 
  

   ures 
  in 
  length 
  to 
  tip 
  of 
  wings 
  54 
  mm. 
  Expanse 
  of 
  wings 
  95 
  mm. 
  It 
  has 
  

   sometimes 
  been 
  confused 
  with 
  the 
  other 
  common 
  gray 
  species 
  Ch. 
  

   rastricornis, 
  but 
  may 
  readily 
  be 
  distinguished 
  by 
  the 
  characters 
  

   tabulated 
  below. 
  

  

  CHARACTERS 
  COMPARED 
  

  

  RASTRICORNIS 
  

  

  PECTINICORNIS 
  

  

  antennae 
  of 
  female 
  

  

  serrate 
  

  

  pectinate 
  

  

  embossed 
  markings 
  on 
  

   head 
  aud 
  prothorax 
  

  

  black 
  on 
  a 
  paler 
  gronnd 
  

  

  yellow 
  on 
  a 
  black 
  gronnd 
  

  

  prothorax 
  

  

  longer 
  than 
  wide 
  

  

  not 
  longer 
  than 
  wide 
  

  

  radial 
  sector 
  

  

  5-6 
  branched 
  

  

  7, 
  branched 
  

  

  pale 
  fuscous 
  spots 
  od 
  fore 
  

   wings 
  

  

  indistinct, 
  isolated 
  

  

  meeting 
  in 
  narrow, 
  trans- 
  

   verse 
  bands 
  across 
  the 
  

   middle 
  of 
  the 
  wing 
  

  

  base 
  of 
  the 
  upper 
  limb 
  of 
  

   first 
  fork 
  of 
  radical 
  sec- 
  

   tor, 
  as 
  far 
  as 
  the 
  first 
  

   cross 
  vein 
  in 
  cell 
  Ri 
  

  

  black 
  

  

  mostly 
  white 
  

  

  Near 
  the 
  place 
  where 
  the 
  insect 
  was 
  found 
  in 
  a 
  stump 
  the 
  larvae 
  

   referred 
  to 
  this 
  species 
  by 
  supposition 
  were 
  taken: 
  one 
  on 
  July 
  18, 
  

   apparently 
  fully 
  grown, 
  and 
  two 
  smaller 
  ones 
  June 
  30. 
  

  

  The 
  full 
  grown 
  larva 
  measured 
  55 
  mm 
  in 
  length; 
  width 
  of 
  prothorax 
  

   5 
  mm; 
  length 
  of 
  respiratory 
  tubes 
  on 
  eighth 
  abdominal 
  segment 
  only 
  .7 
  

   mm. 
  (Ch. 
  serrico 
  mis 
  larvae, 
  length 
  36; 
  of 
  respiratory 
  tubes 
  5; 
  

   width 
  of 
  prothorax 
  3). 
  

  

  Color 
  yellowish 
  brown, 
  darker 
  on 
  head 
  and 
  prothorax 
  ; 
  margins 
  of 
  

   sclerites 
  yellowish; 
  clypeus 
  yellow; 
  labrum 
  reddish 
  brown. 
  Legs 
  yel- 
  

   lowish, 
  washed 
  with 
  brown 
  exteriorly. 
  A 
  longitudinal 
  mark 
  of 
  brown 
  at 
  

  

  