﻿NOTES 
  ON 
  SOME 
  AMERICAN 
  DIPTERA 
  OF 
  THE 
  GENUS 
  

   FANNIA, 
  WITH 
  DESCRIPTIONS 
  OF 
  NEW 
  SPECIES. 
  

  

  By 
  J. 
  R. 
  Malloch, 
  

  

  0/ 
  the 
  Bureau 
  of 
  Entomology, 
  United 
  States 
  Department 
  of 
  Agriculture. 
  

  

  INTRODUCTION. 
  

  

  The 
  species 
  of 
  this 
  genus 
  have 
  not 
  so 
  far 
  been 
  treated 
  collectively 
  

   in 
  any 
  paper 
  deahng 
  with 
  the 
  American 
  species, 
  and 
  the 
  only 
  attempt 
  

   to 
  describe 
  any 
  of 
  our' 
  forms 
  that 
  has 
  been 
  made 
  is 
  that 
  by 
  Herr 
  P. 
  

   Stem 
  ^ 
  in 
  his 
  paper 
  on 
  North 
  American 
  Anthomyidse. 
  The 
  only 
  

   other 
  species 
  described 
  originally 
  from 
  North 
  America 
  are 
  femorata 
  

   Loew, 
  2 
  species 
  by 
  Bigot 
  ^ 
  which 
  probably 
  have 
  been 
  recognized 
  by 
  

   Stein 
  ^ 
  as 
  synonyms 
  of 
  other 
  species 
  (mexicana 
  Bigot 
  is 
  a 
  synonym 
  

   of 
  F. 
  canicularis 
  Fabricus), 
  and 
  3 
  species 
  described 
  in 
  the 
  larval 
  

   stage 
  by 
  Fitch/ 
  wliich 
  can 
  not 
  be 
  identified 
  either. 
  The 
  species 
  

   described 
  by 
  D. 
  W. 
  Coquillett 
  as 
  Homalomyia 
  flavivaria,^ 
  from 
  

   Alaska, 
  is 
  mentioned 
  in 
  the 
  present 
  paper. 
  It 
  is 
  impossible 
  in 
  the 
  

   time 
  at 
  my 
  disposal, 
  and 
  with 
  the 
  limited 
  material 
  available, 
  to 
  

   monograph 
  the 
  genus, 
  but 
  I 
  have 
  given 
  a 
  table 
  of 
  the 
  species 
  in 
  the 
  

   group 
  which 
  have 
  the 
  abdomen 
  marked 
  with 
  three 
  rows 
  of 
  spots. 
  

   This 
  characteristic 
  is 
  confined 
  to 
  one 
  Eiu-opean 
  species 
  and 
  those 
  

   given 
  in 
  this 
  paper 
  from 
  North 
  America 
  and 
  Panama. 
  In 
  one 
  or 
  

   two 
  cases 
  South 
  American 
  forms 
  possess 
  this 
  coloration 
  in 
  a 
  certain 
  

   degree, 
  but 
  they 
  need 
  not 
  be 
  considered 
  here. 
  

  

  The 
  principal 
  characters 
  for 
  the 
  separation 
  of 
  this 
  genus 
  from 
  

   other 
  Anthomyidse 
  lie, 
  in 
  the 
  male, 
  in 
  the 
  very 
  large 
  eyes, 
  wliich 
  

   are 
  almost 
  confluent 
  above 
  and 
  reach 
  to 
  almost 
  the 
  lower 
  margin 
  

   of 
  sides 
  of 
  head, 
  leaving 
  a 
  very 
  small, 
  almost 
  linear, 
  che^k 
  area; 
  the 
  

   frons 
  and 
  epistome, 
  in 
  profile, 
  do 
  not 
  project 
  much 
  beyond 
  eyes, 
  the 
  

   arista 
  is 
  bare, 
  or 
  very 
  slightly 
  pubescent, 
  and 
  the 
  palpi 
  and 
  proboscis 
  

   are 
  normal. 
  In 
  the 
  female 
  the 
  eyes 
  are 
  separated 
  by 
  about 
  one- 
  

   tliird 
  the 
  width 
  of 
  the 
  head, 
  and 
  the 
  cruciate 
  frontal 
  bristles 
  are 
  

   absent. 
  The 
  abdomen 
  in 
  the 
  male 
  is 
  flat, 
  elongate 
  oval 
  in 
  outline, 
  

   and 
  the 
  hj^opygium 
  is 
  very 
  inconspicuous, 
  except 
  in 
  glaucescens 
  

  

  » 
  Berl. 
  Ent. 
  Zeit., 
  vol. 
  42, 
  1897. 
  * 
  Amer. 
  Ent., 
  vol. 
  2, 
  p. 
  137. 
  

  

  « 
  Ann. 
  See. 
  Ent. 
  France, 
  No. 
  33, 
  1885. 
  ^ 
  Proc. 
  Wash. 
  Acad. 
  Sci., 
  vol. 
  2, 
  1900, 
  p. 
  446. 
  

  

  a 
  Zelt. 
  Hym. 
  Dipt., 
  vol 
  7, 
  1907, 
  p. 
  273. 
  

  

  Proceedings 
  U. 
  S. 
  National 
  Museum, 
  Vol. 
  44— 
  No. 
  1972. 
  

  

  621 
  

  

  