﻿THE 
  riLOHlD 
  FLIES 
  OF 
  GUAM 
  — 
  BOHAiiT 
  -407 
  

  

  humeral 
  cross 
  vein 
  to 
  second 
  longitudinal 
  sli<ihtly 
  lonrjer 
  than 
  from 
  

   the 
  latter 
  to 
  apex 
  of 
  third 
  lonijitudin;!]. 
  L 
  </.<: 
  Miiltil)iae 
  \Yith 
  a 
  weak 
  

   fringe 
  of 
  setae 
  outside 
  the 
  dorsal 
  hair 
  fringe 
  as 
  well 
  as 
  a 
  stronger 
  

   one 
  inside; 
  hind 
  tibiae 
  with 
  an 
  outer 
  fringe 
  composed 
  of 
  9 
  to 
  12 
  

   rather 
  strong 
  setae; 
  fore 
  tibiae 
  setose 
  dorsally 
  but 
  without 
  a 
  definite 
  

   low 
  of 
  setae; 
  hind 
  tibial 
  spur 
  of 
  male 
  nearly 
  as 
  long 
  as 
  the 
  metatai"sus. 
  

   Ahdoincn: 
  Tergitcs 
  sparsely 
  covered 
  with 
  short, 
  stiff 
  hairs 
  laterally 
  

   and 
  with 
  long 
  ones 
  apically 
  on 
  tergites 
  5 
  to 
  7. 
  Genitalia 
  as 
  figured, 
  

   the 
  lamella 
  yellow 
  with 
  strong 
  terminal 
  bristles. 
  

  

  This 
  is 
  a 
  cosmopolitan 
  species 
  that 
  breeds 
  in 
  a 
  wide 
  variety 
  of 
  

   materials. 
  It 
  is 
  easily 
  dislinguisheil 
  from 
  the 
  other 
  species 
  on 
  Guam 
  

   by 
  its 
  color 
  pattern, 
  types 
  of 
  pleural 
  pubescence, 
  and 
  the 
  male 
  

   genitalia. 
  

  

  Genus 
  DIPLONEURA 
  Lioy 
  

  

  Dn»LONEURA 
  CORNUTA 
  (Bigot) 
  

   FlQUBE 
  39 
  

  

  Fhora 
  cornula 
  Bigot, 
  in 
  de 
  la 
  Sagra's 
  "Histoire 
  physique, 
  politique 
  ct 
  uaturelle 
  

   lie 
  rile 
  (le 
  Cuba" 
  (French 
  eil.). 
  p. 
  827, 
  1857. 
  

  

  Length 
  1.4 
  to 
  2.1 
  nun.; 
  length 
  of 
  wing 
  of 
  a 
  3-mm. 
  specimen 
  0.95 
  

   mm. 
  ; 
  color 
  yellowish 
  brown 
  ; 
  f 
  rons 
  blackish 
  above 
  ; 
  thorax 
  with 
  median 
  

   and 
  lateral 
  brown 
  areas; 
  scutellum 
  brown; 
  abdomen 
  yellow 
  with 
  

   blackish 
  areas 
  laterally 
  and 
  apically 
  on 
  tergites 
  2 
  to 
  5 
  and 
  covering 
  

   most 
  of 
  6 
  and 
  7; 
  palpi, 
  proboscis, 
  pleura, 
  and 
  legs 
  rather 
  clear 
  yellow; 
  

   wings 
  hyaline. 
  Head: 
  Frons 
  with 
  long 
  slender 
  spines, 
  averaging 
  over 
  

   half 
  as 
  long 
  as 
  width 
  of 
  frons; 
  spacing 
  as 
  shown 
  in 
  figure 
  Ii9 
  ; 
  antennal 
  

   arista 
  slightly 
  longer 
  than 
  head 
  width; 
  proboscis 
  of 
  female 
  narrow, 
  

   chitinized, 
  extending 
  one-third 
  its 
  length 
  beyond 
  palpi 
  ; 
  palpi 
  with 
  five 
  

   long 
  apical 
  and 
  subapical 
  spines, 
  fourth 
  from 
  apex 
  longer 
  than 
  antial 
  

   bristleii 
  and 
  directed 
  downward; 
  checks 
  with 
  two 
  long 
  bristles 
  near 
  

   genal 
  angles 
  and 
  a 
  single 
  hjiig 
  one 
  at 
  level 
  of 
  antennal 
  inseitions. 
  

   Thorax: 
  Dorsum 
  broader 
  than 
  long, 
  with 
  live 
  bristles 
  along 
  each 
  lal- 
  

   ( 
  ral 
  margin, 
  the 
  longest 
  on 
  posterolateral 
  corner 
  of 
  scutum; 
  apii-al 
  

   margin 
  of 
  .s<Mitum 
  olherwisi; 
  with 
  one 
  pair 
  of 
  long 
  bristles 
  and 
  two 
  

   mMcii 
  shorter 
  inner 
  pairs 
  of 
  hairlike 
  ones; 
  scutellum 
  with 
  one 
  pair 
  of 
  

   I'Mig 
  bri.stles 
  on 
  the 
  posterolateral 
  corners. 
  Pubescence 
  of 
  pleura 
  as 
  

   shown 
  in 
  figure 
  )59. 
  Lerjn: 
  Posterior 
  tibial' 
  with 
  dense 
  dorsal 
  fringe 
  of 
  

   hair 
  and 
  u 
  scries 
  of 
  weak 
  setae 
  inside 
  and 
  hidden 
  by 
  the 
  dorsal 
  fringe; 
  

   anterior 
  tibiae 
  with 
  four 
  setae 
  on 
  outer 
  margins; 
  inner 
  sides 
  of 
  mid- 
  

   tibiae 
  with 
  hairs 
  arranged 
  in 
  transver.se 
  series 
  and 
  with 
  apical 
  spurs 
  

   nearly 
  as 
  long 
  as 
  nu^tatarsi; 
  posterior 
  melatarsi 
  with 
  two 
  outstanding 
  

   setae 
  before 
  the 
  middle 
  along 
  ventral 
  margins. 
  Witkjh: 
  With 
  whitish 
  

   microtrichia; 
  placement 
  of 
  Atins 
  and 
  cosliil 
  fringe 
  as 
  shown 
  in 
  fiijnrc 
  

  

  