﻿410 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  9* 
  

  

  and 
  sixth 
  twice 
  as 
  long 
  as 
  fifth 
  ; 
  tergal 
  pubescence 
  minute 
  ; 
  genitalia 
  

   large, 
  the 
  right 
  side 
  with 
  a 
  long 
  bootlike 
  process; 
  the 
  left 
  side 
  with 
  

   its 
  hair 
  fringe 
  mainly 
  confined 
  to 
  a 
  single 
  row 
  close 
  to 
  posterior 
  

   border. 
  

  

  Holotype 
  female 
  and 
  allotype 
  male 
  (U. 
  S. 
  N. 
  M. 
  No. 
  57994) 
  : 
  F. 
  E. 
  A. 
  

   Farm, 
  near 
  Agana, 
  Guam, 
  October 
  1945, 
  female 
  taken 
  from 
  pig 
  dung, 
  

   male 
  swept 
  from 
  above 
  mud 
  in 
  the 
  pig 
  pen 
  (G. 
  E. 
  Bohart) 
  . 
  Paratype 
  

   male 
  : 
  From 
  light 
  trap, 
  Point 
  Oca, 
  Guam, 
  June 
  1945 
  (G. 
  E. 
  Bohart 
  and 
  

   J. 
  L. 
  Gressitt) 
  . 
  

  

  Remarks. 
  — 
  The 
  two 
  specimens 
  of 
  males 
  (both 
  mounted 
  in 
  euparol) 
  

   vary 
  in 
  the 
  extension 
  of 
  the 
  aedeagus 
  and 
  the 
  expansion 
  of 
  the 
  wings, 
  

   but 
  this 
  is 
  due 
  to 
  mounting 
  techniques. 
  The 
  allotype 
  has 
  one 
  meso- 
  

   pleural 
  bristle 
  whereas 
  the 
  paratype 
  has 
  two. 
  The 
  holotype 
  is 
  

   mounted 
  in 
  euparol 
  but 
  is 
  unfortunately 
  somewhat 
  collapsed 
  and 
  

   shrunken. 
  This 
  species 
  is 
  close 
  to 
  subgldber^ 
  but 
  the 
  female 
  has 
  

   stronger 
  and 
  more 
  numerous 
  abdominal 
  setae 
  and 
  a 
  more 
  uniform 
  

   abdominal 
  color. 
  The 
  male 
  genitalia 
  also 
  differentiates 
  it 
  from 
  

   subgldber 
  and 
  from 
  other 
  species 
  for 
  which 
  genitalia 
  have 
  been 
  

   described 
  or 
  figured. 
  

  

  CHONOCEPHALUS 
  SUBGLABER, 
  new 
  species 
  

   FiGtJBES 
  40, 
  47 
  

  

  Holotype^ 
  female. 
  — 
  Length 
  0.9 
  mm. 
  ; 
  dark 
  brown 
  to 
  blackish 
  brown 
  

   above, 
  brown 
  laterally 
  on 
  thorax 
  and 
  creamy 
  white 
  laterally 
  and 
  

   ventrally 
  on 
  abdomen 
  ; 
  abdominal 
  tergites 
  with 
  broad, 
  complete 
  trans- 
  

   verse 
  preapical 
  black 
  bands 
  containing 
  pale 
  circles 
  at 
  the 
  bases 
  of 
  the 
  

   fringe 
  setae. 
  Head: 
  Eyes 
  with 
  about 
  15 
  facets; 
  sides 
  of 
  head 
  with 
  

   five 
  bristles 
  anterior 
  to 
  eyes, 
  the 
  posteriormost 
  about 
  one-fourth 
  as 
  

   long 
  as 
  head; 
  palpi 
  narrower 
  than 
  antennae. 
  Thorax: 
  Propleura 
  

   with 
  a 
  dorsal 
  bristle 
  in 
  addition 
  to 
  scattered 
  small 
  setae. 
  Abdomen: 
  

   Tergal 
  pubescence 
  scattered 
  and 
  minute 
  except 
  in 
  preapical 
  fringes; 
  

   bases 
  of 
  fringe 
  hairs 
  completely 
  enclosed 
  in 
  the 
  broad 
  preapical 
  black 
  

   stripes 
  ; 
  sternites 
  4 
  to 
  6 
  with 
  a 
  few 
  minute 
  setae 
  medially 
  and 
  sternite 
  

   7 
  with 
  a 
  median 
  sclerite 
  bearing 
  short 
  setae; 
  spatula-shaped 
  sternal 
  

   structure 
  with 
  "handle" 
  less 
  than 
  three 
  times 
  as 
  long 
  as 
  "blade." 
  

  

  Allotype^ 
  male. 
  — 
  ^Length 
  of 
  wing 
  1 
  mm. 
  ; 
  body 
  color 
  as 
  in 
  hirsutus. 
  

   Head: 
  Bristles 
  moderately 
  strong, 
  those 
  extending 
  from 
  the 
  eye 
  along 
  

   the 
  anterior 
  margin 
  of 
  the 
  frons 
  and 
  along 
  the 
  forward 
  prolongation 
  

   of 
  frons 
  gradually 
  diminishing 
  in 
  strength 
  but 
  most 
  of 
  them 
  as 
  strong 
  

   as 
  postocellars 
  or 
  postverticals 
  ; 
  median 
  groove 
  broad 
  and 
  shallow, 
  

   separating 
  forward 
  prolongation 
  of 
  frons 
  into 
  widely 
  separate 
  

   ridges. 
  Thorax: 
  Hairs 
  of 
  propleura 
  scattered 
  and 
  mesopleura 
  with 
  

   three 
  setae. 
  Legs: 
  As 
  in 
  hirsutus 
  but 
  not 
  so 
  sparsely 
  pubescent. 
  

   "Wings: 
  Costal 
  fringe 
  short, 
  with 
  numerous 
  hairs, 
  those 
  on 
  basal 
  half 
  

  

  