﻿MOSQUITO 
  NOTES 
  — 
  III. 
  89 
  

  

  Culex 
  (Culiciomyia) 
  nebulosus, 
  Theo. 
  

  

  ?Culex 
  invenustus 
  , 
  Theo. 
  

   C. 
  pseudocinereus, 
  Theo. 
  

   ?C. 
  nigrochaetae, 
  Theo., 
  $. 
  

   Pectinopalpus 
  fuscus, 
  Theo. 
  

  

  A 
  more 
  intensive 
  study 
  of 
  the 
  African 
  Culiciomyia 
  has 
  revealed 
  the 
  fact 
  that 
  

   there 
  exist 
  three 
  quite 
  distinct 
  types 
  of 
  male 
  hypopygium, 
  which 
  I 
  now 
  consider 
  

   should 
  be 
  regarded 
  as 
  distinct 
  species, 
  though 
  the 
  distinctions 
  are 
  otherwise 
  very 
  

   feebly 
  marked. 
  I 
  have, 
  however, 
  examined 
  a 
  number 
  of 
  hypopygia 
  of 
  each 
  form, 
  

   and 
  have 
  seen 
  no 
  suggestion 
  of 
  intergradation. 
  All 
  three 
  forms 
  are 
  widely 
  distributed. 
  

  

  C. 
  nebulosus 
  was 
  described 
  from 
  females 
  only, 
  and 
  it 
  is 
  therefore 
  largely 
  a 
  matter 
  

   of 
  conjecture 
  to 
  which 
  form 
  the 
  name 
  should 
  be 
  applied. 
  I 
  propose 
  to 
  fix 
  it 
  on 
  the 
  

   one 
  which 
  seems 
  to 
  be 
  the 
  commonest. 
  

  

  Hypopygium 
  : 
  side-pieces 
  with 
  a 
  rather 
  small 
  ventro-lateral 
  patch 
  of 
  hair. 
  

   Lobe 
  moderately 
  large, 
  with 
  three 
  spines 
  and 
  two 
  leaves, 
  but 
  without 
  a 
  patch 
  of 
  

   fine 
  curved 
  hairs 
  ; 
  the 
  spines 
  are 
  moderately 
  stout, 
  the 
  basal 
  one 
  straight 
  and 
  shorter 
  

   than 
  the 
  other 
  two, 
  which 
  have 
  curled 
  tips, 
  middle 
  spine 
  the 
  stoutest 
  of 
  the 
  three 
  ; 
  

   the 
  leaves 
  are 
  very 
  unequal 
  in 
  breadth, 
  the 
  apical 
  one 
  being 
  very 
  much 
  broader 
  

   than 
  the 
  other, 
  and 
  nearly 
  as 
  broad 
  as 
  long. 
  Clasper 
  bent 
  in 
  the 
  middle, 
  with 
  a 
  

   membranous 
  expansion 
  all 
  round 
  the 
  outside 
  of 
  the 
  bend, 
  and 
  with 
  a 
  conspicuous 
  

   subapical 
  spiny 
  crest. 
  Lobes 
  of 
  mesosome 
  each 
  with 
  an 
  apical 
  fringe-like 
  process 
  

   which 
  is 
  moderately 
  stout 
  and 
  about 
  as 
  long 
  as 
  the 
  swollen 
  basal 
  part 
  ; 
  at 
  the 
  base 
  

   of 
  the 
  finger 
  on 
  the 
  inner 
  side 
  is 
  a 
  well-marked 
  tooth 
  ; 
  the 
  pair 
  of 
  fingers 
  rather 
  

   widefy 
  separated. 
  Tenth 
  sternites 
  short 
  and 
  stout, 
  without 
  basal 
  arm 
  ; 
  apical 
  

   spines 
  numerous, 
  those 
  on 
  the 
  outer 
  side 
  stout 
  and 
  blunt. 
  

  

  Vein-scales 
  towards 
  tip 
  of 
  wing 
  slightly 
  clavate. 
  Pleurae 
  with 
  the 
  integument 
  

   uniformly 
  dark, 
  heavily 
  dusted 
  with 
  grey. 
  Coxae 
  with 
  patches 
  of 
  white 
  or 
  whitish 
  

   scales. 
  

  

  I 
  have 
  seen 
  males 
  of 
  this 
  species 
  from 
  the 
  following 
  localities 
  : 
  — 
  Gold 
  Coast 
  : 
  

   Obuasi 
  {Graham) 
  ; 
  Accra 
  (Connal). 
  Sierra 
  Leone 
  : 
  Daru 
  (Murphy) 
  ; 
  Freetown 
  

   (Bacot, 
  Gratton). 
  S. 
  Nigeria 
  : 
  Lagos 
  (Strachan). 
  Belgian 
  Congo 
  : 
  Kabinda 
  

   (Sclnvetz) 
  ; 
  Coquilhatville 
  (Massey). 
  Uganda 
  : 
  Busu 
  (Fraser). 
  Sudan 
  : 
  Kajo 
  Kaji 
  

   .(King). 
  Rhodesia 
  : 
  Salisbury 
  (Marshall). 
  Tanganyika 
  Terr. 
  : 
  Dar-es-Salaam 
  

   '(Pomeroy) 
  . 
  

  

  Culex 
  (Culiciomyia) 
  cinereus, 
  Theo. 
  

   ? 
  Culex 
  impudicus, 
  Ficalbi. 
  

   ?C. 
  mundulus, 
  Griinberg. 
  

   Culiciomyia 
  freetownensis, 
  Theo. 
  

   C. 
  uniformis, 
  Theo. 
  

  

  This 
  species 
  is 
  distinctly 
  larger 
  on 
  the 
  average 
  than 
  C. 
  nebulosus, 
  being 
  about 
  

   the 
  size 
  of 
  C. 
  pipiens. 
  I 
  can 
  find 
  no 
  constant 
  external 
  distinctions 
  between 
  the 
  two, 
  

   but 
  of 
  C 
  . 
  cinereus 
  there 
  are 
  two 
  rather 
  well-marked 
  varieties 
  : 
  (a) 
  type 
  form 
  : 
  mes- 
  

   epimeron 
  with 
  a 
  large 
  patch 
  of 
  white 
  scales 
  almost 
  covering 
  its 
  basal 
  half, 
  abdominal 
  

   tergites 
  with 
  large 
  greyish-white 
  apical 
  lateral 
  patches, 
  upper 
  fork-cell 
  in 
  $ 
  less 
  than 
  

   three 
  times 
  as 
  long 
  as 
  its 
  stem 
  ; 
  (b) 
  var. 
  uniformis 
  : 
  mesepimeron 
  with 
  only 
  a 
  few- 
  

   pale 
  scales 
  near 
  its 
  base, 
  abdominal 
  tergites 
  with 
  few 
  or 
  no 
  pale 
  scales 
  apically, 
  upper 
  

   fork-cell 
  in 
  $ 
  fully 
  three 
  times 
  as 
  long 
  as 
  its 
  stem. 
  These 
  two 
  varieties 
  have 
  identica 
  

   hypopygia, 
  and 
  differ 
  from 
  C. 
  nebulosus 
  as 
  follows 
  : 
  — 
  side-pieces 
  somewhat 
  more 
  

   swollen 
  and 
  with 
  a 
  larger 
  ventro-lateral 
  hair-patch. 
  Lobe 
  larger, 
  the 
  spines 
  rather 
  

   stouter 
  and 
  more 
  widely 
  separated 
  ; 
  a 
  patch 
  of 
  about 
  20 
  soft 
  curved 
  hairs 
  on 
  the 
  

   apical 
  part 
  of 
  the 
  lobe. 
  Mesosome 
  constructed 
  as 
  in 
  C. 
  nebulosus, 
  but 
  rather 
  more 
  

   strongly 
  chitinised. 
  

  

  