﻿78 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  103 
  

  

  ment 
  with 
  a 
  pair 
  of 
  long, 
  dark 
  batonnets 
  at 
  basal 
  fourth; 
  claws 
  very 
  

   slender 
  and 
  unequal, 
  the 
  longer 
  claw 
  as 
  long 
  as 
  fifth 
  segment, 
  the 
  other 
  

   a 
  third 
  as 
  long. 
  

  

  Wings 
  hyaline, 
  anterior 
  veins 
  yellowish; 
  first 
  radial 
  cell 
  small, 
  a 
  

   seventh 
  as 
  long 
  as 
  second; 
  petiole 
  of 
  media 
  a 
  fifth 
  way 
  to 
  apex 
  of 
  wing. 
  

   Halteres 
  yelloMash 
  white. 
  

  

  Abdomen 
  pale 
  green; 
  two 
  dark 
  spots 
  present 
  on 
  sides 
  of 
  first 
  and 
  

   second 
  tergites; 
  third 
  tergite 
  with 
  broad, 
  black 
  band; 
  fifth 
  tergite 
  

   with 
  a 
  pair 
  of 
  small, 
  lateral, 
  black 
  spots. 
  Spermatheca 
  one, 
  slightly 
  

   oval, 
  the 
  duct 
  not 
  sclerotized. 
  

  

  Male: 
  Similar 
  to 
  the 
  female 
  but 
  with 
  the 
  usual 
  sexual 
  differences 
  ; 
  

   antennal 
  plumes 
  bright 
  yellow. 
  Ninth 
  sternite 
  broad 
  and 
  not 
  strongly 
  

   sclerotized, 
  with 
  spiculate 
  membrane; 
  ninth 
  tergite 
  rounded 
  with 
  

   membranous, 
  setigerous, 
  apicolateral 
  lobes. 
  Basistyle 
  with 
  distal 
  

   portion 
  slender, 
  base 
  stout, 
  a 
  large 
  unsclerotized 
  lobe 
  about 
  halfway 
  

   along 
  inner 
  margin, 
  connected 
  on 
  dorsal 
  side 
  to 
  margin 
  of 
  ninth 
  tergite 
  ; 
  

   dististyle 
  about 
  as 
  long 
  as 
  basistyle, 
  tapered 
  and 
  curved 
  to 
  a 
  slender, 
  

   bluntly 
  pointed 
  tip. 
  Aedeagus 
  with 
  an 
  oblique 
  pair 
  of 
  long, 
  straight, 
  

   slender, 
  sclerotized 
  bars. 
  Parameres 
  with 
  stout 
  basal 
  knobs, 
  a 
  pair 
  

   of 
  inner 
  apodemes 
  joined 
  mesad 
  by 
  a 
  membrane 
  from 
  their 
  anterior 
  

   margins; 
  stems 
  stout, 
  slightly 
  curved, 
  with 
  apex 
  abruptly 
  narrowed, 
  

   pointed, 
  and 
  bent 
  mesad 
  in 
  the 
  form 
  of 
  a 
  short 
  claw. 
  

  

  Type. 
  — 
  In 
  collection 
  British 
  Museum 
  (Natural 
  History), 
  cf, 
  

   Brazil, 
  Nova 
  Teutonia. 
  

  

  Material 
  examined. 
  — 
  Virginia: 
  Falls 
  Church, 
  July 
  4-29, 
  1950, 
  

   Wu-th, 
  9 
  cf 
  d', 
  16 
  99. 
  

  

  South 
  Carolina: 
  Greenville, 
  June 
  20, 
  1940, 
  H. 
  and 
  M. 
  Townes, 
  1 
  cf 
  . 
  

  

  Louisiana: 
  Baton 
  Rouge, 
  May 
  1947, 
  Wirth, 
  2 
  cfcf. 
  

  

  Remarks. 
  — 
  Very 
  similar 
  to 
  S. 
  viridis 
  (Coquillett), 
  1901, 
  in 
  the 
  gen- 
  

   eral 
  green 
  color 
  with 
  black-banded 
  abdomen, 
  but 
  readily 
  distinguished 
  

   from 
  that 
  species 
  by 
  the 
  dark-banded 
  mesonotum, 
  unhanded 
  legs, 
  

   pale 
  wings, 
  and 
  in 
  the 
  male 
  by 
  the 
  yellowish 
  antennal 
  plumes. 
  One 
  

   female 
  from 
  Falls 
  Church 
  is 
  atypical, 
  with 
  the 
  abdomen 
  entirely 
  dark. 
  

  

  12. 
  Stilobezzia 
  {Stiloheszia) 
  pallidiventris 
  (Mallocb), 
  1915 
  

  

  Hartomyia 
  pallidiventris 
  Malioch, 
  Bull. 
  Illinois 
  State 
  Lab. 
  Nat. 
  Hist., 
  vol. 
  10, 
  p. 
  

  

  344, 
  1915 
  (9 
  ; 
  Illinois, 
  Indiana). 
  

   Stilobezzia 
  pallidiventris, 
  Johannsen, 
  Ann. 
  Ent. 
  Soc. 
  Amer., 
  vol. 
  36, 
  p. 
  781, 
  1943. 
  

  

  Description. 
  — 
  Female 
  (from 
  original 
  description): 
  Length 
  1.0 
  mm. 
  

   Shining 
  black; 
  head, 
  antennae, 
  palpi, 
  legs, 
  and 
  abdomen 
  yellow; 
  

   abdomen 
  may 
  be 
  darkened; 
  wings 
  hyaline; 
  halteres 
  white. 
  Antennae 
  

   as 
  long 
  as 
  entire 
  body; 
  legs 
  slender; 
  basitarsi 
  longer 
  than 
  segments 
  

   2 
  to 
  5 
  combined; 
  fifth 
  segment 
  without 
  ventral 
  batonnets; 
  claws 
  

   slender, 
  inner 
  half 
  as 
  long 
  as 
  outer. 
  First 
  radial 
  cell 
  a 
  fifth 
  as 
  long 
  as 
  

   second. 
  

  

  