﻿510 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.44. 
  

  

  Habitat. 
  — 
  Holotype. 
  — 
  Male, 
  Trece 
  Agiias, 
  Cacao, 
  Alta 
  Vera 
  Paz, 
  

   Guatemala, 
  April 
  23, 
  1906 
  (Barber 
  and 
  Schwarz, 
  coll.). 
  Para- 
  

   types. 
  — 
  Two, 
  same 
  locality 
  and 
  collector; 
  April 
  27. 
  

  

  Type. 
  — 
  In 
  U. 
  S. 
  National 
  Museum 
  eollection 
  (No. 
  14929). 
  

  

  Genus 
  MOLOPHILUS 
  Curtis. 
  

  

  Molophilus 
  Curtis, 
  British 
  Entomology, 
  1833, 
  p. 
  444. 
  — 
  Osten 
  Sacken, 
  Mono- 
  

   graphs, 
  vol. 
  4, 
  1869, 
  p. 
  162. 
  

  

  KEY 
  TO 
  THE 
  NEOTROPICAL 
  SPECIES 
  OF 
  MOLOPHILUS. 
  

  

  1. 
  Color 
  black; 
  fore 
  and 
  hind 
  tibiae 
  with 
  long 
  fringes 
  of 
  hairs. 
  

  

  thaumastopodus, 
  new 
  species 
  (Brazil). 
  

   Color 
  light 
  grayish-brown; 
  tibiae 
  without 
  conspicuous 
  fringes 
  of 
  hairs. 
  

  

  guatemalensis, 
  new 
  species 
  (Central 
  America). 
  

  

  MOLOPHILUS 
  THAUMASTOPODUS, 
  new 
  species. 
  

  

  Dull 
  greyish-black; 
  fore 
  and 
  hind 
  tibiae 
  with 
  long 
  fringes 
  of 
  hair; 
  

   wings 
  and 
  halteres 
  dark. 
  

  

  Female. 
  — 
  Length, 
  4.2 
  mm; 
  wing, 
  4.1 
  mm.; 
  fore 
  leg, 
  femur, 
  3 
  mm; 
  

   tibia 
  and 
  tarsus, 
  5 
  mm.; 
  middle 
  leg, 
  femur, 
  2.6 
  mm; 
  tibia 
  and 
  tarsus, 
  

   3.7 
  mm.; 
  hind 
  leg, 
  femur, 
  4.6 
  mm; 
  tibia 
  and 
  tarsus, 
  6 
  mm.; 
  head: 
  

   rostrum 
  and 
  palpi 
  brownish-black; 
  antennse 
  dark 
  brown, 
  each 
  seg- 
  

   ment 
  somewhat 
  paler 
  at 
  the 
  base; 
  antennee 
  rather 
  long, 
  the 
  seg- 
  

   ments 
  oval, 
  with 
  long 
  blackish 
  hairs. 
  Front, 
  vertex 
  and 
  occiput 
  

   dull 
  grayish-black. 
  

  

  Thorax 
  : 
  dorsum 
  dull 
  grayish-black 
  throughout 
  ; 
  pseudosuture 
  black. 
  

   Pleurae 
  uniform 
  dull 
  blackish. 
  Halteres 
  black, 
  light 
  brown 
  at 
  the 
  

   base. 
  Foreleg 
  : 
  coxae 
  and 
  trochanters 
  yellowish-brown 
  ; 
  femur 
  bro\vn, 
  

   paler 
  on 
  the 
  basal 
  half, 
  slender 
  basally, 
  stout 
  apically, 
  with 
  long 
  

   dark 
  brown 
  hairs 
  appressed 
  internally, 
  subappressed 
  externall}^, 
  tibia 
  

   slender, 
  dark, 
  blackish, 
  with 
  a 
  patch 
  of 
  white 
  hairs 
  near 
  the 
  base 
  on 
  

   the 
  outer 
  side; 
  a 
  long 
  fringe 
  of 
  black 
  hairs 
  on 
  the 
  same 
  side, 
  four 
  or 
  

   five 
  times 
  as 
  long 
  as 
  the 
  diameter 
  of 
  the 
  tibia; 
  tarsus 
  black, 
  segment 
  

   1 
  with 
  the 
  basal 
  half 
  white 
  on 
  the 
  external 
  side; 
  tarsus 
  clothed 
  with 
  

   long 
  appressed 
  hairs. 
  Middle 
  leg 
  : 
  coxa 
  and 
  trochanter 
  dull 
  yellowish- 
  

   brown 
  ; 
  femora 
  rather 
  uniform 
  dark 
  brown, 
  with 
  long 
  appressed 
  hairs 
  ; 
  

   tibia 
  dark 
  brownish-black, 
  a 
  small 
  white 
  spot 
  on 
  the 
  side 
  near 
  the 
  base; 
  

   tarsi 
  dark 
  brownish-black, 
  a 
  few 
  white 
  hairs 
  at 
  the 
  base 
  of 
  segment 
  1. 
  

   Hind 
  leg: 
  coxa 
  and 
  trochanter 
  dull 
  yellowish-brown; 
  femora 
  paler 
  

   basally, 
  dark 
  brownish-black 
  on 
  the 
  apical 
  half, 
  verj^ 
  slender 
  at 
  

   origin, 
  but 
  stout 
  at 
  the 
  tip, 
  at 
  the 
  extreme 
  tip, 
  on 
  the 
  outer 
  side, 
  

   a 
  patch 
  of 
  white 
  hairs 
  ; 
  tibia 
  slender, 
  dark 
  brownish-black, 
  hairs 
  long, 
  

   appressed 
  on 
  basal 
  third; 
  on 
  apical 
  two-thirds, 
  the 
  hairs 
  stand 
  out 
  

   straight 
  on 
  four 
  sides, 
  being 
  from 
  seven 
  to 
  eight 
  times 
  as 
  long 
  as 
  the 
  

   diameter 
  of 
  the 
  tibia 
  ; 
  tarsus, 
  segment 
  1 
  black, 
  with 
  long 
  black 
  hairs 
  

   on 
  the 
  outer 
  face, 
  appressed 
  internally; 
  segments 
  two 
  to 
  five 
  with 
  

   long 
  white 
  hairs 
  externally, 
  short 
  black 
  ones 
  internally. 
  

  

  