﻿NOTES 
  ON 
  THE 
  ETHIOPIAN 
  FRUIT 
  FLIES, 
  OTHER 
  THAN 
  DACUS. 
  239 
  

  

  2(1). 
  Wings 
  with 
  a 
  broad 
  fuscous 
  apical 
  band, 
  the 
  first 
  and 
  second 
  posterior 
  cells 
  

  

  being 
  for 
  the 
  greater 
  part 
  infuscated. 
  

   3(4). 
  Apical 
  hyaline 
  spot 
  of 
  the 
  wings 
  broad, 
  extending 
  on 
  both 
  sides 
  beyond 
  the 
  

  

  ends 
  of 
  the 
  3rd 
  and 
  4th 
  veins 
  . 
  . 
  . 
  . 
  . 
  . 
  pulchella, 
  sp. 
  n. 
  

  

  4(3). 
  Apical 
  hyaline 
  spot 
  small 
  and 
  not 
  extending 
  laterally 
  beyond 
  the 
  ends 
  of 
  

  

  the 
  above-named 
  veins 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  hammer 
  steini, 
  End. 
  

  

  Rhacochlaena 
  fasciolata, 
  Loew, 
  1863. 
  

  

  The 
  apex 
  of 
  the 
  wing 
  is 
  occupied 
  by 
  a 
  white 
  rounded 
  spot, 
  which 
  in 
  certain 
  lights 
  

   is 
  very 
  conspicuous. 
  The 
  ovipositor 
  is 
  2 
  mm. 
  long 
  ; 
  it 
  is 
  cylindro-conical, 
  shining 
  

   red, 
  but 
  broadly 
  black 
  at 
  base 
  above 
  and 
  more 
  narrowly 
  at 
  tip 
  ; 
  it 
  is 
  clothed 
  with 
  

   very 
  short 
  and 
  dense, 
  darkish 
  pubescence. 
  In 
  the 
  present 
  species 
  there 
  is 
  but 
  a 
  

   single 
  s. 
  or. 
  

  

  A 
  couple 
  of 
  specimens 
  from 
  Natal, 
  Estcourt, 
  ix. 
  and 
  x. 
  1896 
  (G. 
  A. 
  K. 
  Marshall). 
  

  

  Rhacochlaena 
  puScheHa, 
  sp. 
  nov. 
  (PI. 
  xvii, 
  fig. 
  8). 
  

  

  Very 
  near 
  hammer 
  steini, 
  but 
  at 
  once 
  distinguished 
  by 
  the 
  much 
  broader 
  apical 
  

   hyaline 
  spot 
  of 
  the 
  wings. 
  

  

  ^. 
  Length 
  of 
  body 
  4*5 
  mm.; 
  of 
  wing 
  4 
  mm. 
  Head 
  reddish, 
  face 
  jowls 
  and 
  

   lower 
  part 
  of 
  occiput 
  pale 
  yellowish 
  or 
  whitish 
  ; 
  frons 
  opaque, 
  with 
  shining 
  vertical 
  

   plates 
  and 
  slightly 
  whitish 
  sides 
  ; 
  the 
  small 
  ocellar 
  dot 
  is 
  black. 
  In 
  the 
  middle 
  

   of 
  the 
  face 
  there 
  is 
  an 
  ill-defined 
  fuscous 
  cross 
  band, 
  not 
  reaching 
  the 
  sides. 
  

   Antennae 
  entirely 
  reddish, 
  but 
  the 
  third 
  joint 
  a 
  little 
  infuscated 
  at 
  the 
  end 
  ; 
  the 
  

   third 
  joint 
  is 
  rather 
  narrow, 
  with 
  the 
  upper 
  border 
  distinctly 
  concave 
  ; 
  it 
  is 
  1\ 
  

   times 
  as 
  long 
  as 
  broad, 
  with 
  rounded 
  tip 
  ; 
  arista 
  shortly 
  pubescent. 
  Jowls 
  very 
  

   narrow, 
  narrower 
  than 
  the 
  breadth 
  of 
  the 
  third 
  antennal 
  joint. 
  Eyes 
  greenish, 
  

   with 
  two 
  parallel 
  cross 
  bands 
  of 
  a 
  purplish 
  colour, 
  one 
  a 
  little 
  beneath 
  the 
  middle, 
  

   the 
  other 
  on 
  the 
  upper 
  third. 
  Palpi 
  and 
  proboscis 
  yellowish. 
  Cephalic 
  bristles 
  

   black 
  ; 
  or. 
  1 
  -j- 
  3 
  ; 
  no 
  oc. 
  ; 
  pvt. 
  less 
  developed 
  ; 
  the 
  longer 
  bristles 
  are 
  rather 
  

   yellowish 
  at 
  the 
  end. 
  Thorax 
  black, 
  opaque, 
  with 
  greyish 
  dust 
  on 
  the 
  back 
  : 
  a 
  

   middle 
  longitudinal 
  stripe 
  and 
  the 
  sides 
  are 
  reddish 
  ; 
  pleurae 
  shining 
  yellowish 
  ; 
  

   along 
  the 
  notopleural 
  line, 
  from 
  the 
  humeri 
  to 
  the 
  root 
  of 
  the 
  wings, 
  there 
  is 
  a 
  

   rather 
  broad 
  whitish 
  stripe. 
  Scutellum 
  whitish 
  in 
  the 
  middle 
  and 
  infuscated 
  on 
  

   the 
  sides. 
  Mesophragma 
  black 
  and 
  a 
  little 
  shining 
  ; 
  the 
  hypopleurae 
  are 
  also 
  black, 
  

   but 
  with 
  a 
  narrow 
  whitish 
  stripe 
  in 
  continuation 
  with 
  the 
  notopleural 
  one. 
  

   Squamulae 
  and 
  halteres 
  whitish. 
  Chaetotaxy 
  typical 
  ; 
  all 
  the 
  bristles 
  are 
  black, 
  

   but 
  the 
  longer 
  ones 
  have 
  yellowish 
  ends 
  ; 
  four 
  scutellar 
  ; 
  the 
  short 
  pubescence 
  

   is 
  pale 
  yellowish. 
  Abdomen 
  black, 
  with 
  the 
  last 
  segment 
  reddish 
  brown 
  behind, 
  

   rather 
  shining, 
  with 
  dark 
  pubescence 
  and 
  black 
  terminal 
  bristles. 
  Genitalia 
  

   reddish 
  brown, 
  shining, 
  with 
  short 
  yellowish 
  appendages 
  beneath. 
  Legs 
  entirely 
  

   yellowish 
  ; 
  bristles 
  of 
  front 
  femora 
  and 
  spurs 
  of 
  middle 
  tibiae 
  black. 
  Wings 
  

   nearly 
  the 
  same 
  as 
  in 
  Enderlein's 
  fig. 
  R, 
  p. 
  441, 
  with 
  the 
  following 
  differences 
  : 
  

   (a) 
  the 
  first 
  fuscous 
  band 
  is 
  less 
  developed 
  and 
  much 
  shorter, 
  ending 
  near 
  the 
  upper 
  

   corner 
  of 
  the 
  second 
  basal 
  cell 
  ; 
  (6) 
  the 
  second 
  fuscous 
  band 
  is 
  longer, 
  reaching 
  

   the 
  hind 
  border 
  of 
  the 
  wing 
  or 
  nearly 
  so 
  ; 
  (c) 
  the 
  third 
  abbreviated 
  band 
  is 
  narrower 
  ; 
  

   (d) 
  the 
  apical 
  hyaline 
  spot 
  is 
  twice 
  as 
  broad, 
  extending 
  symmetrically 
  above 
  in 
  

  

  