﻿NOTES 
  ON' 
  THE 
  ETHIOPIAN 
  FRUIT 
  FLIES, 
  OTHER 
  THAN 
  DACUS. 
  255 
  

  

  H 
  

  

  in 
  angusta, 
  while 
  the 
  axillary 
  cell 
  is 
  equally 
  narrow 
  ; 
  the 
  hind 
  cross-vein 
  is 
  short, 
  

   nearly 
  straight 
  and 
  perpendicular, 
  the 
  lower 
  outer 
  angle 
  of 
  the 
  discoidal 
  cell 
  being 
  

   thus 
  not 
  acute 
  and 
  not 
  produced 
  ; 
  lower 
  angle 
  of 
  the 
  anal 
  cell 
  not 
  acute. 
  

  

  Type 
  (J, 
  a 
  single 
  specimen 
  from 
  British 
  East 
  Africa, 
  Embu, 
  ll.iii.1913- 
  

   (67. 
  H. 
  J. 
  Orde-Browne) 
  ; 
  type 
  J, 
  a 
  single 
  specimen 
  from 
  Gold 
  Coast, 
  Aburi, 
  

   27.xii.1914 
  (Dr. 
  J. 
  W. 
  Scott 
  Macfie). 
  

  

  Aciura 
  oborinia, 
  Walker 
  (1849). 
  (PI. 
  xviii, 
  fig. 
  5). 
  

  

  A 
  comparatively 
  large 
  species, 
  like 
  the 
  following 
  one, 
  but 
  at 
  once 
  distinguished 
  

   by 
  the 
  hyaline 
  basal 
  spot 
  of 
  the 
  third 
  posterior 
  cell. 
  

  

  I 
  assume 
  the 
  present 
  species 
  to 
  be 
  that 
  of 
  Walker, 
  because 
  it 
  corresponds 
  in 
  the 
  

   size 
  and 
  answers 
  very 
  well 
  to 
  the 
  description 
  of 
  the 
  wing 
  pattern 
  ; 
  but 
  Walker 
  

   says 
  decidedly 
  that 
  the 
  bristles 
  at 
  hind 
  border 
  of 
  head 
  are 
  black, 
  while 
  in 
  the 
  present 
  

   specimens 
  they 
  are 
  whitish 
  yellow, 
  like 
  in 
  the 
  following 
  and 
  in 
  the 
  allied 
  species. 
  

   In 
  this 
  character 
  the 
  species 
  agrees 
  better 
  with 
  the 
  preceding 
  one 
  (perspicillaris)> 
  

   which 
  has 
  also 
  the 
  hyaline 
  spot 
  of 
  the 
  first 
  posterior 
  cell 
  ; 
  but 
  I 
  think 
  that 
  

   perspicillaris 
  cannot 
  be 
  Walker's 
  species, 
  being 
  much 
  smaller 
  and 
  having 
  a 
  very 
  

   different 
  wing 
  pattern. 
  

  

  I 
  will 
  give 
  here 
  a 
  short 
  redescription 
  of 
  what 
  I 
  believe 
  to 
  be 
  Walker's 
  species.* 
  

   <J$. 
  Length 
  of 
  body 
  4*5-5 
  mm. 
  ; 
  of 
  ovipositor 
  2 
  mm. 
  ; 
  of 
  wing 
  5*5-6 
  mm. 
  

   Head 
  reddish 
  brown, 
  with 
  black 
  occiput, 
  black 
  ocellar 
  plate 
  and 
  black 
  vertical 
  

   plates 
  ; 
  antennae 
  with 
  reddish 
  basal 
  joints 
  and 
  infuscated 
  third 
  joint 
  ; 
  lunula 
  not 
  

   specially 
  developed. 
  Thorax 
  shining 
  black, 
  more 
  glistening 
  on 
  the 
  sides 
  and 
  pleurae 
  ; 
  

   the 
  short 
  dorsal 
  pubescence 
  is 
  yellowish 
  ; 
  the 
  bristles 
  are 
  black. 
  The 
  scutellum 
  

   is 
  not 
  well 
  preserved, 
  and 
  seems 
  to 
  have 
  no 
  trace 
  of 
  a. 
  set. 
  Halteres 
  yellowish. 
  

   Abdomen 
  narrow 
  and 
  elongate, 
  shining 
  black, 
  with 
  black 
  pubescence 
  and 
  black 
  

   bristles 
  ; 
  ovipositor 
  as 
  long 
  as 
  the 
  abdomen, 
  shining 
  black. 
  Legs 
  long 
  and 
  rather 
  

   slender, 
  black, 
  with 
  the 
  tibiae 
  at 
  end 
  and 
  the 
  tarsi 
  yellowish 
  ; 
  front 
  femora 
  with 
  

   three 
  black 
  bristles 
  beneath. 
  Wings 
  with 
  a 
  rather 
  broad 
  and 
  quite 
  hyaline 
  axillary 
  

   lobe. 
  The 
  pattern 
  is 
  as 
  described 
  by 
  Walker 
  ; 
  the 
  black 
  basal 
  stripe 
  extends 
  from 
  

   the 
  first 
  costal 
  cell 
  to 
  the 
  middle 
  of 
  the 
  second, 
  ending 
  there 
  obliquely 
  and 
  separated 
  

   from 
  the 
  black 
  stigma. 
  The 
  second 
  hyaline 
  indentation 
  of 
  the 
  fore 
  border 
  extends 
  

   with 
  its 
  acute 
  point 
  into 
  the 
  base 
  of 
  the 
  first 
  posterior 
  cell, 
  along 
  the 
  outer 
  side 
  

   of 
  the 
  small 
  cross-vein 
  ; 
  the 
  oval 
  whitish 
  spot 
  at 
  the 
  base 
  of 
  the 
  first 
  posterior 
  

   cell 
  is 
  placed 
  much 
  before 
  the 
  middle 
  of 
  the 
  cell 
  itself, 
  only 
  a 
  little 
  beyond 
  the 
  upper 
  

   end 
  of 
  the 
  posterior 
  cross- 
  vein. 
  The 
  three 
  indentations 
  of 
  the 
  hind 
  border 
  are 
  narrow 
  

   and 
  oblique, 
  the 
  basal 
  one 
  entering 
  the 
  base 
  of 
  the 
  discoidal 
  cell 
  and 
  reaching 
  

   the 
  fourth 
  vein, 
  while 
  the 
  much 
  shorter 
  middle 
  one 
  enters 
  only 
  with 
  a 
  very 
  short 
  

   point 
  and 
  the 
  third 
  stops 
  just 
  at 
  the 
  upper 
  basal 
  angle 
  of 
  the 
  second 
  posterior 
  cell. 
  

   The 
  last 
  portions 
  of 
  the 
  third 
  and 
  fourth 
  longitudinal 
  veins 
  are 
  slightly 
  but 
  distinctly 
  

   convergent 
  towards 
  the 
  end 
  ; 
  the 
  two 
  cross- 
  veins 
  are 
  very 
  close 
  together, 
  their 
  

   distance 
  on 
  the 
  fourth 
  vein 
  being 
  shorter 
  than 
  the 
  length 
  of 
  the 
  small 
  cross-vein 
  ; 
  

   the 
  hind 
  cross- 
  vein 
  is 
  curved 
  and 
  oblique, 
  the 
  lower 
  exterior 
  angle 
  of 
  the 
  discoidal 
  

   cell 
  being 
  acute 
  and 
  produced 
  ; 
  third 
  posterior 
  cell 
  as 
  broad 
  as 
  the 
  axillary 
  lobe 
  ; 
  

   lower 
  angle 
  of 
  the 
  anal 
  cell 
  rather 
  acute 
  but 
  not 
  produced. 
  Costal 
  bristle 
  long. 
  

   *[The 
  specimens 
  described 
  by 
  the 
  author 
  agree 
  well 
  with 
  Walker's 
  type.— 
  Ed.] 
  

  

  