﻿230 
  PROF. 
  M. 
  BEZZT. 
  

  

  eyes. 
  There 
  is 
  no 
  subocular 
  spot 
  on 
  the 
  jowls. 
  The 
  antennae 
  are 
  entirely 
  yellow, 
  

   about 
  as 
  long 
  as 
  the 
  face 
  ; 
  second 
  joint 
  not 
  prominent, 
  never 
  spinulose 
  ; 
  third 
  

   joint 
  broad 
  and 
  long, 
  attenuated 
  but 
  rounded 
  at 
  end 
  ; 
  arista 
  dark, 
  shortly 
  pubescent 
  

   on 
  both 
  sides. 
  Upper 
  mouth-border 
  rather 
  prominent 
  and 
  shining. 
  Palpi 
  broad, 
  

   flat, 
  yellow, 
  with 
  short 
  black 
  bristles 
  ; 
  proboscis 
  yellowish. 
  Cephalic 
  bristles 
  black, 
  

   but 
  the 
  pvt. 
  and 
  the 
  very 
  thin 
  and 
  indistinct 
  genal 
  bristles 
  are 
  yellowish, 
  the 
  former 
  

   sometimes 
  infuscated 
  ; 
  the 
  hairs 
  of 
  the 
  jowls 
  and 
  of 
  the 
  lower 
  part 
  of 
  the 
  occiput 
  

   are 
  yellowish 
  ; 
  frontal 
  stripe 
  with 
  sparse 
  indistinct 
  darkish 
  hairs. 
  Thorax 
  entirely 
  

   pale 
  yellowish 
  and 
  rather 
  shining, 
  with 
  broad 
  black 
  spots 
  on 
  the 
  dorsum 
  ; 
  it 
  is 
  clothed 
  

   with 
  short, 
  pale 
  yellowish 
  hairs. 
  Humeri 
  with 
  a 
  broad 
  rounded 
  black 
  spot 
  ; 
  from 
  

   the 
  humeri 
  to 
  the 
  transverse 
  suture 
  extends 
  a 
  broad 
  rectangular 
  blackish-brown 
  

   shining 
  patch, 
  reaching 
  inwardly 
  to 
  the 
  dorsocentral 
  lines, 
  and 
  including 
  a 
  deep 
  black, 
  

   opaque 
  spot 
  above 
  the 
  notopleural 
  line 
  with 
  the 
  anterior 
  npl. 
  Between 
  these 
  two 
  

   black 
  patches 
  there 
  is 
  a 
  rather 
  broad, 
  shining 
  black, 
  middle 
  stripe, 
  extending 
  from 
  

   the 
  black 
  scapular 
  region 
  to 
  the 
  suture, 
  and 
  ending 
  there 
  truncately. 
  Beyond 
  the 
  

   suture 
  the 
  back 
  is 
  entirely 
  shining 
  black, 
  with 
  a 
  concave 
  front 
  edge 
  ; 
  along 
  the 
  middle 
  

   line 
  there 
  is 
  a 
  pale 
  yellow, 
  longitudinal 
  stripe, 
  which 
  is 
  a 
  little 
  narrower 
  than 
  the 
  

   presutural 
  black 
  stripe 
  and 
  ends 
  with 
  a 
  transverse, 
  pale 
  yellowish 
  streak 
  in 
  front 
  

   of 
  the 
  scutellum, 
  thus 
  forming 
  a 
  J. 
  shaped 
  mark. 
  Above 
  and 
  in 
  front 
  of 
  the 
  root 
  

   of 
  the 
  wings, 
  and 
  on 
  the 
  postalar 
  calli 
  there 
  are 
  rounded, 
  deep 
  black, 
  opaque 
  spots. 
  

   The 
  pleurae 
  are 
  of 
  a 
  shining 
  pale 
  yellowish 
  colour, 
  whitish 
  on 
  the 
  upper 
  part 
  of 
  

   mesopleura, 
  and 
  there 
  with 
  a 
  narrow 
  longitudinal 
  black 
  stripe, 
  extending 
  from 
  

   below 
  the 
  humeri 
  to 
  the 
  mpl. 
  bristle. 
  The 
  upper 
  border 
  of 
  the 
  sternopleura 
  is 
  pale 
  ; 
  

   there 
  is 
  a 
  broad 
  double 
  whitish 
  hypopleural 
  spot. 
  All 
  the 
  bristles 
  are 
  black 
  and 
  strong, 
  

   but 
  the 
  well 
  developed 
  middle 
  scp., 
  and 
  the 
  thin 
  pt. 
  and 
  St., 
  are 
  pale 
  yellowish 
  ; 
  

   one 
  mpl. 
  only 
  ; 
  dc. 
  placed 
  before 
  the 
  line 
  of 
  the 
  a. 
  sa. 
  Scutellum 
  rounded, 
  convex, 
  

   slightly 
  trilobate 
  ; 
  it 
  is 
  entirety 
  shining 
  black, 
  with 
  a 
  narrow, 
  pale 
  yellowish, 
  basal 
  

   border 
  ; 
  it 
  has 
  rather 
  long 
  and 
  numerous 
  whitish 
  hairs 
  on 
  the 
  disc, 
  and 
  four 
  long 
  

   black 
  bristles, 
  the 
  apical 
  ones 
  not 
  decussate, 
  or 
  only 
  slightly 
  so 
  at 
  the 
  tips. 
  Postscu- 
  

   tellum 
  shining 
  black 
  ; 
  mesophragma 
  yellow, 
  clothed 
  with 
  dense 
  whitish 
  dust 
  on 
  

   the 
  upper 
  half. 
  Squamulae 
  whitish 
  ; 
  halteres 
  yellowish, 
  Abdomen 
  entirely 
  yellow, 
  

   rather 
  shining, 
  with 
  numerous 
  blackish 
  hairs, 
  and 
  with 
  black 
  bristles 
  at 
  end 
  and 
  

   on 
  sides. 
  The 
  narrow 
  hind 
  border 
  of 
  the 
  first 
  segment 
  in 
  both 
  sexes 
  and 
  almost 
  

   the 
  whole 
  of 
  the 
  third 
  segment 
  in 
  the 
  female, 
  are 
  densely 
  clothed 
  with 
  whitish 
  dust, 
  

   forming 
  thus 
  two 
  white 
  cross 
  bands. 
  Ovipositor 
  shining 
  yellow, 
  with 
  yellowish 
  

   hairs, 
  with 
  the 
  basal 
  segment 
  bluntly 
  triangular, 
  about 
  as 
  broad 
  as 
  long, 
  swollen. 
  

   Legs 
  entirely 
  pale 
  yellowish, 
  with 
  yellowish 
  pubescence 
  ; 
  the 
  long 
  bristles 
  of 
  the 
  

   underside 
  of 
  the 
  front 
  femora, 
  and 
  those 
  of 
  the 
  hind 
  tibiae 
  are 
  likewise 
  yellowish 
  ; 
  

   the 
  single 
  spur 
  of 
  middle 
  tibiae 
  is 
  black. 
  Wings 
  proportionally 
  long, 
  with 
  short 
  

   and 
  less 
  developed 
  costal 
  bristle 
  ; 
  the 
  veins 
  are 
  entirely 
  pale 
  yellowish, 
  and 
  typically 
  

   disposed 
  ; 
  the 
  stigma 
  is 
  about 
  twice 
  as 
  long 
  as 
  broad, 
  quite 
  yellow, 
  or 
  rarely 
  with 
  

   the 
  apical 
  half 
  subhyaline. 
  The 
  pattern 
  is 
  yellowish 
  and 
  shaped 
  as 
  in 
  cosyra, 
  but 
  

   the 
  basal 
  dark 
  streaks 
  are 
  less 
  numerous, 
  the 
  second 
  basal 
  cell 
  having 
  a 
  single 
  blackish 
  

   dot, 
  and 
  the 
  anal 
  cell 
  having 
  no 
  dots 
  at 
  all. 
  

  

  Type 
  <J, 
  type 
  $, 
  and 
  an 
  additional 
  female 
  specimen 
  from 
  Cape 
  Colony, 
  Grahams- 
  

   town, 
  9.H.1905 
  (C. 
  W. 
  Matty). 
  

  

  