﻿TWO 
  NEW 
  SPECIES 
  OF 
  DIPTERA 
  IN 
  THE 
  UNITED 
  STATES 
  

   NATIONAL 
  MUSEUM 
  COLLECTION. 
  

  

  By 
  J. 
  R. 
  Malloch, 
  

  

  Of 
  the 
  Bureau 
  of 
  Entomology, 
  United 
  States 
  Department 
  of 
  Agriculture. 
  

  

  One 
  of 
  the 
  species 
  described 
  in 
  this 
  paper 
  was 
  collected 
  by 
  Mr. 
  

   R. 
  P. 
  Currie 
  in 
  1903, 
  and 
  has 
  remained 
  among 
  the 
  undetermined 
  

   AntiiomyidaB 
  since. 
  The 
  other 
  is 
  a 
  recent 
  addition 
  to 
  the 
  collections 
  

   of 
  the 
  United 
  States 
  National 
  Museum, 
  which 
  it 
  is 
  considered 
  advis- 
  

   able 
  to 
  describe 
  in 
  addition 
  to 
  those 
  species 
  belonging 
  to 
  the 
  Borbor- 
  

   idae, 
  which 
  have 
  already 
  been 
  included 
  in 
  a 
  previous 
  paper. 
  

  

  FANNIA 
  TIBIALIS, 
  new 
  species. 
  

  

  Male. 
  — 
  Eyes 
  rather 
  widely 
  separated 
  for 
  a 
  male 
  of 
  this 
  genus, 
  

   the 
  narrow 
  central 
  stripe 
  opaque 
  black, 
  narrower 
  than 
  the 
  orbits 
  

   at 
  below 
  oceUi, 
  orbits 
  shining, 
  silvery 
  white, 
  which 
  color 
  is 
  carried 
  

   increasingly 
  broader 
  to 
  opposite 
  base 
  of 
  antennae 
  and 
  from 
  this 
  point 
  

   to 
  lower 
  angle 
  of 
  eyes 
  at 
  a 
  gradually 
  diminishing 
  breadth, 
  frons 
  

   slightly 
  buccate, 
  mouth 
  margin 
  and 
  cheeks 
  slightly 
  projecting, 
  

   antennae 
  black, 
  third 
  joint 
  brown 
  polHnose, 
  arista 
  black, 
  shining 
  

   and 
  slightly 
  swollen 
  at 
  base, 
  palpi 
  black; 
  mesonotum 
  opaque 
  gray- 
  

   browTi 
  with, 
  three 
  dark 
  brown 
  stripes 
  interrupted 
  anteriorly 
  and 
  

   posteriorly, 
  as 
  well 
  as 
  a 
  spot 
  behind 
  humeri 
  and 
  one 
  above 
  wing 
  

   bases 
  of 
  same 
  color, 
  acrostical 
  bristles 
  in 
  three 
  rows, 
  the 
  center 
  row 
  

   the 
  weakest 
  and 
  rather 
  irregular, 
  scutellar 
  bristles 
  very 
  long, 
  the 
  

   usual 
  four 
  much 
  the 
  longest, 
  pleurae 
  darker 
  than 
  disk 
  of 
  mesonotum; 
  

   abdomen 
  narrow, 
  elongate-oval, 
  gray, 
  dorso-central 
  stripe 
  brown, 
  

   narrow, 
  distinct 
  and 
  parallel-sided, 
  not 
  triangularly 
  dilated 
  on 
  

   segments, 
  all 
  segments 
  with 
  numerous, 
  moderately 
  long 
  bristles, 
  

   hypopygium 
  small, 
  gray-brown; 
  legs 
  black, 
  tibiae 
  and 
  apices 
  of 
  

   femora 
  yellow, 
  anterior 
  femora 
  with 
  a 
  row 
  of 
  long 
  bristles 
  on 
  each 
  of 
  

   the 
  postero-dorsal, 
  posterior, 
  and 
  postero-ventral 
  surfaces, 
  mid 
  

   femora 
  not 
  noticeably 
  constricted 
  at 
  apex, 
  antero-ventral 
  surface 
  

   with 
  seven 
  almost 
  equally 
  long 
  bristles 
  on 
  basal 
  half, 
  the 
  basal 
  one 
  

   being 
  weak 
  and 
  hairlike, 
  and 
  13-14 
  on 
  apical 
  half, 
  which 
  steadily 
  

   decrease 
  in 
  length 
  and 
  become 
  closer 
  as 
  they 
  near 
  apex, 
  postero- 
  

  

  Proceedings 
  U. 
  S. 
  National 
  Museum, 
  Vol. 
  44— 
  No. 
  1962. 
  

  

  461 
  

  

  