﻿NEW 
  AND 
  LITTLE-KNOWN 
  MESOPOTAMIAN 
  BLOOD-SUCKING 
  DIPTERA. 
  

  

  283 
  

  

  six 
  segments 
  clothed 
  with 
  minute, 
  appressed, 
  glistening 
  whitish 
  or 
  silvery 
  white 
  

   hairs, 
  in 
  case 
  of 
  sixth 
  sternite 
  sometimes 
  interspersed 
  with 
  longer 
  blackish 
  hairs, 
  

   ground-colour 
  of 
  hind 
  margins 
  of 
  second 
  to 
  fifth 
  sternites 
  inclusive 
  ivory-yellow, 
  

   hind 
  margin 
  of 
  sixth 
  sternite 
  cream-coloured, 
  hind 
  margins 
  of 
  fourth 
  and 
  two 
  following 
  

   sternites 
  clothed 
  with 
  longer 
  whitish 
  hair, 
  seventh 
  sternite 
  deep 
  mouse-grey 
  or 
  dark 
  

   mouse-grey, 
  clothed 
  with 
  usual 
  coarse, 
  erect, 
  black 
  hair. 
  Wings 
  : 
  costa 
  mummy- 
  

   brown, 
  other 
  veins 
  tawny 
  olive 
  or 
  light 
  sepia-coloured 
  ; 
  stigma 
  colourless, 
  scarcely 
  

   distinguishable. 
  Squamae 
  pale 
  pinkish-buff, 
  fringed 
  with 
  fine 
  whitish 
  hair. 
  Hal 
  teres 
  

   pale 
  ochraceous-buff, 
  knobs 
  sometimes 
  light 
  buff 
  or 
  ivory-yellow. 
  Legs 
  : 
  coxae 
  

   pale 
  neutral-grey 
  pollinose, 
  clothed 
  with 
  fine 
  whitish 
  or 
  silvery 
  white 
  hair 
  ; 
  femora, 
  

   except 
  tips 
  which 
  are 
  cinnamon-buff, 
  neutral 
  grey 
  pollinose, 
  clothed 
  with 
  silvery 
  

   white 
  hair, 
  middle 
  femora 
  sometimes 
  entirely 
  or 
  mainly 
  cinnamon-buff 
  pollinose, 
  

   mottled 
  with 
  neutral 
  grey 
  ; 
  tibiae 
  cream-coloured 
  or 
  cream-buff 
  (distal 
  thirds 
  or 
  

   rather 
  less 
  than 
  distal 
  halves 
  of 
  front 
  pair 
  blackish-brown 
  or 
  black), 
  clothed 
  with 
  

   short 
  silvery 
  white 
  hairs, 
  extreme 
  tips 
  of 
  middle 
  and 
  hind 
  pairs, 
  or 
  at 
  any 
  rate 
  of 
  

   latter, 
  brownish, 
  at 
  least 
  on 
  inner 
  side 
  ; 
  front 
  tarsi 
  blackish-brown 
  or 
  black, 
  not 
  

   noticeably 
  expanded 
  or 
  fourth 
  segment 
  very 
  slightly 
  so 
  ; 
  middle 
  and 
  hind 
  tarsi 
  

   mummy-brown 
  and 
  clothed 
  above 
  with 
  minute 
  black 
  hairs, 
  first 
  segment 
  in 
  each 
  case, 
  

   except 
  tip, 
  more 
  or 
  less 
  cream- 
  or 
  cinnamon-buff-coloured, 
  and 
  clothed 
  above, 
  at 
  

   least 
  in 
  part, 
  except 
  distal 
  extremity, 
  with 
  minute, 
  appressed, 
  silvery 
  white 
  hairs 
  ; 
  

   hind 
  tarsi, 
  except 
  tips 
  of 
  first 
  four 
  segments, 
  sometimes 
  cinnamon-buff, 
  second 
  and 
  

   following 
  segments 
  of 
  middle 
  tarsi 
  distinctly 
  expanded. 
  

  

  Fig. 
  5. 
  Head 
  of 
  Tabanns 
  fumidus, 
  Austen, 
  §, 
  from 
  in 
  front 
  ; 
  a, 
  antenna, 
  from 
  the 
  side. 
  

  

  Hit 
  and 
  Anah, 
  R. 
  Euphrates 
  (Major 
  A. 
  D. 
  Fraser). 
  Holotype, 
  Hit, 
  28.vii.1920 
  ; 
  

   two 
  paratypes, 
  Anah, 
  4.viii.l920, 
  " 
  flying 
  round 
  lamp 
  at 
  night." 
  

  

  In 
  the 
  $ 
  sex, 
  at 
  any 
  rate, 
  the 
  species 
  described 
  above 
  superficially 
  somewhat 
  

   resembles 
  Tabanus 
  pulverifer, 
  Walk, 
  (see 
  below), 
  the 
  typical 
  series 
  of 
  which 
  was 
  

   obtained 
  seventy-two 
  years 
  ago 
  at 
  Baghdad 
  (W. 
  K. 
  Loft 
  its). 
  From 
  the 
  $ 
  of 
  its 
  

   congener 
  in 
  question 
  that 
  of 
  T. 
  fumidus 
  is, 
  however, 
  distinguishable, 
  inter 
  alia, 
  by 
  

   the 
  front 
  being, 
  on 
  the 
  whole, 
  somewhat 
  narrower 
  ; 
  by 
  the 
  upper 
  frontal 
  callus 
  being 
  

   more 
  concentrated 
  and 
  more 
  sharply 
  defined 
  ; 
  by 
  the 
  eyes 
  being 
  unhanded 
  ; 
  by 
  the 
  

   upper 
  distal 
  angle 
  of 
  the 
  first 
  segment 
  of 
  the 
  antenna 
  not 
  being 
  dark 
  brown 
  ; 
  by 
  

   the 
  smoke-grey 
  median 
  triangle 
  on 
  the 
  dorsum 
  of 
  each 
  abdominal 
  segment, 
  from 
  the 
  

   second 
  (visible) 
  to 
  the 
  fifth 
  inclusive, 
  being 
  broader 
  and 
  anteriorly 
  more 
  bluntly 
  

   truncated 
  ; 
  by 
  the 
  appendix 
  to 
  the 
  anterior 
  branch 
  of 
  the 
  third 
  longitudinal 
  vein 
  

   being 
  longer 
  ; 
  and 
  by 
  the 
  middle 
  and 
  hind 
  femora 
  not 
  being 
  entirely 
  pale 
  

   (pinkish 
  buff). 
  

  

  