﻿516 
  H. 
  Loew. 
  Tab, 
  z. 
  Bestimmen 
  d. 
  uordamerik. 
  Arten 
  d. 
  Tipul. 
  -Gattung 
  Pachyrrhinu. 
  

  

  20. 
  circumscripta 
  Lw. 
  

  

  \. 
  Joints 
  of 
  the 
  flagellum 
  pale 
  at 
  base; 
  antennae 
  with 
  more 
  than 
  

   13 
  joints 
  in 
  both 
  sexes. 
  

   * 
  Stigma 
  yellowish 
  brown. 
  

   Apex 
  of 
  the 
  wings 
  not 
  distinctly 
  infuscated. 
  

  

  21. 
  eucera 
  Lw. 
  

  

  ** 
  Stigma 
  dark-brown. 
  

  

  Apex 
  of 
  the 
  wings 
  distinctly 
  infuscated. 
  

  

  22. 
  polymera 
  Lw. 
  

  

  