﻿AQUATIC 
  INSECTS 
  IN 
  THE 
  ADIRONDACKS 
  589 
  

  

  yellowish; 
  areolet 
  open, 
  the 
  submedian 
  cell 
  a 
  little 
  longer 
  than 
  the 
  

   median. 
  Abdominal 
  petiole 
  about 
  wice 
  as 
  long 
  as 
  the 
  hind 
  coxae, 
  

   bifurrowed 
  and 
  subcoriaceous 
  above. 
  

  

  Type. 
  Cat. 
  no. 
  5316, 
  U. 
  S. 
  national 
  museum 
  

  

  Habitat. 
  Saranac 
  Inn 
  N. 
  Y. 
  

  

  Host. 
  Diptera: 
  Sepedon 
  fuscipennis 
  Loew, 
  Bred 
  Aug. 
  24, 
  

   1900, 
  from 
  a 
  puparium 
  of 
  Sepedon 
  fuscipennis 
  Loew, 
  by 
  Prof. 
  

   James 
  G. 
  Needham. 
  

  

  This 
  species 
  comes 
  very 
  close 
  to 
  the 
  European 
  Atractodes 
  

   gravidus 
  Haliday 
  ; 
  but 
  is 
  readily 
  distinguished 
  by 
  a 
  shght 
  difference 
  

   in 
  color 
  and 
  by 
  decided 
  differences 
  in 
  antennal 
  and 
  metathoracic 
  

   characters. 
  

  

  