﻿THE 
  PHORID 
  FLIES 
  OF 
  GUAM 
  — 
  BOH 
  ART 
  403 
  

  

  Hind 
  tibiae 
  and 
  tarsi 
  together 
  distinctly 
  longer 
  than 
  wings; 
  inner 
  

   posterior 
  margins 
  of 
  hind 
  tibiae 
  with 
  eight 
  bristles; 
  hind 
  femora 
  with 
  

   basal 
  ventral 
  bristles 
  longer 
  than 
  apical 
  ventral 
  ones; 
  mid 
  coxae 
  with 
  

   three 
  strong 
  bristles. 
  Wings: 
  Slightly 
  yellowish, 
  with 
  costal 
  fringe 
  

   and 
  placement 
  of 
  veins 
  as 
  shown 
  in 
  figure 
  35; 
  second 
  vein 
  without 
  

   M'tae. 
  Abdomcit: 
  Uniformly 
  blackish 
  brown; 
  segments 
  nearly 
  bare 
  

   except 
  for 
  apical 
  fringes 
  and 
  for 
  small 
  lateral 
  patches 
  on 
  first 
  two 
  

   segments; 
  sternal 
  hairs 
  small 
  and 
  few; 
  genitalia 
  small, 
  with 
  a 
  short 
  

   lamella, 
  bearing 
  slender 
  lamellar 
  bristles; 
  gcnitalic 
  details 
  as 
  in 
  fig- 
  

   ure 
  35. 
  

  

  Holotype 
  (U. 
  S. 
  X. 
  M. 
  No. 
  57902) 
  and 
  one 
  paratype 
  male: 
  Point 
  

   Oca, 
  Guam, 
  June 
  21, 
  1945, 
  reared 
  from 
  dead 
  mollusks 
  (G. 
  E. 
  Bohart 
  

   and 
  J. 
  R. 
  Stuntz). 
  

  

  Remarks. 
  — 
  This 
  species 
  resembles 
  setifemur 
  but 
  is 
  larger 
  and 
  has 
  

   nR':-opleural 
  vestiture. 
  It 
  also 
  resembles 
  paraba.nseta 
  but 
  has 
  no 
  

   dominant 
  mesopleural 
  bristle 
  and 
  has 
  a 
  much 
  shorter 
  costal 
  wing 
  

   fringe. 
  In 
  Malloch's 
  key 
  to 
  the 
  Phoridae 
  of 
  Samoa 
  (1935) 
  it 
  runs 
  to 
  

   M. 
  paciiica 
  but 
  has 
  the 
  first 
  longitudinal 
  vein 
  ending 
  closer 
  to 
  the 
  

   second 
  than 
  to 
  the 
  humeral 
  cross-vein. 
  

  

  The 
  fly 
  is 
  named 
  for 
  J. 
  R. 
  Stuntz, 
  wlio 
  did 
  much 
  of 
  the 
  rearing 
  work 
  

   on 
  Guam 
  for 
  our 
  studies 
  on 
  filth-inhabiting 
  flies. 
  

  

  MEGASELIA 
  PARABASISETA, 
  new 
  species 
  

  

  Figure 
  37 
  

  

  Holotype^ 
  male. 
  — 
  Length 
  1.1 
  mm. 
  ; 
  length 
  of 
  wing 
  0.9 
  mm., 
  body 
  

   color 
  a 
  uniform 
  dark 
  brown, 
  palpi, 
  pleura, 
  sides 
  of 
  abdomen, 
  and 
  legs 
  

   light 
  brown 
  but 
  not 
  yellow; 
  wings 
  distinctly 
  brownish, 
  frons 
  blackish 
  

   brown; 
  apex 
  of 
  hind 
  femora 
  scarcely 
  darkened. 
  Head: 
  Frontal 
  

   bristles 
  moderately 
  long 
  and 
  exceptionally 
  thick; 
  lower 
  supra- 
  

   antennals 
  weaker 
  than 
  but 
  extending 
  as 
  far 
  forward 
  as 
  upper 
  ones; 
  

   antiales 
  nmch 
  closer 
  to 
  lower 
  frontals 
  than 
  to 
  upper 
  supra-antennals; 
  

   j)alpi 
  very 
  broad, 
  with 
  five 
  roughly 
  similar 
  major 
  bristles 
  extending 
  

   outward 
  from 
  outer, 
  forward 
  margin; 
  labium 
  greatly 
  exi)anded 
  in 
  

   softened 
  specimen; 
  antennal 
  arista 
  no 
  longer 
  than 
  heigiit 
  of 
  head; 
  

   cheeks 
  apparently 
  with 
  only 
  one 
  strong 
  bristle 
  at 
  genal 
  angle 
  and 
  with 
  

   three 
  weak 
  ones 
  farther 
  forward. 
  Thoraa': 
  Dorsal 
  hairs 
  short 
  but 
  

   strong, 
  becoming 
  sparse 
  near 
  wing 
  and 
  bristly 
  toward 
  posterior 
  nuir- 
  

   gin 
  ; 
  scutum 
  and 
  posterior 
  edge 
  of 
  scutellum 
  each 
  with 
  only 
  one 
  pair 
  of 
  

   bristles; 
  propleura 
  with 
  a 
  single 
  dorsal 
  posterior 
  row 
  of 
  setae 
  and 
  two 
  

   ventral 
  bristles; 
  mesopleura 
  with 
  dorsal 
  posterior 
  corners 
  bearing 
  a 
  

   l)at«h 
  of 
  small 
  setae 
  in 
  addition 
  to 
  a 
  stronger 
  bristle: 
  anterior 
  spiracles 
  

   enclosed 
  in 
  a 
  separate 
  sclerite. 
  Legs: 
  Moderately 
  long, 
  the 
  posterior 
  

   tibiae 
  and 
  tarsi 
  about 
  as 
  long 
  as 
  the 
  wings 
  and 
  with 
  relative 
  proportions 
  

   of 
  3:4; 
  posterior 
  tibiae 
  with 
  a 
  single 
  dorsal 
  row 
  of 
  only 
  four 
  or 
  fi\e 
  

  

  