﻿THE 
  TABANIDAE 
  OF 
  SOUTHERN 
  NYASALAND. 
  

  

  313 
  

  

  Tabanus 
  nigrostriatus, 
  Aust. 
  

  

  A 
  few 
  females 
  of 
  this 
  species, 
  mostly 
  somewhat 
  worn, 
  were 
  taken 
  near 
  Lake 
  Chilwa, 
  

   in 
  January 
  1914, 
  from 
  which 
  it 
  would 
  appear 
  to 
  be 
  an 
  early 
  mid-season 
  species. 
  

   The 
  males, 
  as 
  might 
  have 
  been 
  expected, 
  were 
  not 
  then 
  obtainable. 
  

  

  Tabanus 
  bare! 
  ay 
  i, 
  Aust. 
  

  

  This 
  species 
  was 
  not 
  taken 
  at 
  Mt. 
  Mlanje 
  itself, 
  but 
  occurs 
  sparingly 
  in 
  Portuguese 
  

   territory 
  to 
  the 
  east 
  of 
  the 
  mountain, 
  and 
  to 
  the 
  north, 
  near 
  Lake 
  Chilwa. 
  

  

  Tabanus 
  sticticollis, 
  Sure. 
  

  

  A 
  small 
  series 
  of 
  7 
  males 
  and 
  13 
  females, 
  apparently 
  belonging 
  to 
  this 
  species, 
  

   were 
  taken 
  near 
  Mlanje, 
  in 
  November 
  and 
  December 
  only, 
  both 
  in 
  1912 
  and 
  1913. 
  

   They 
  were 
  mostly 
  captured 
  in 
  rather 
  open 
  country 
  away 
  from 
  the 
  forest. 
  

  

  The 
  eyes'of 
  the" 
  (J 
  are 
  bronze 
  above 
  with 
  greyish 
  reflections, 
  and 
  dusky 
  below. 
  

  

  Tabanus 
  unitaeniatus, 
  Kir. 
  

  

  This 
  insect 
  was 
  seen 
  on 
  only 
  one 
  occasion 
  in 
  the 
  Mlanje 
  district, 
  a 
  single 
  female 
  

   being 
  taken 
  on 
  the 
  northern 
  boundary, 
  the 
  Palombe 
  River, 
  near 
  Lake 
  Chilwa, 
  in 
  

   January 
  1914. 
  The 
  eyes 
  are 
  dusky 
  and 
  unicolorous, 
  thus 
  distinguishing 
  it 
  at 
  once 
  

   from 
  T. 
  laverani, 
  which 
  it 
  otherwise 
  somewhat 
  resembles. 
  

  

  Tabanus 
  atrimanus, 
  Lw. 
  

  

  This 
  is 
  a 
  common 
  species 
  near 
  Mt. 
  Mlanje, 
  as 
  might 
  be 
  expected 
  owing 
  to 
  its 
  pre- 
  

   preference 
  for 
  the 
  neighbourhood 
  of 
  wooded 
  streams. 
  It 
  is 
  most 
  abundant 
  in 
  

   November 
  and 
  December. 
  

  

  On 
  25th 
  October 
  a 
  number 
  of 
  the 
  larvae 
  were 
  taken 
  in 
  the 
  Ruo 
  River 
  (Plate 
  xxh: 
  

   fig. 
  2) 
  amongst 
  the 
  roots 
  of 
  grasses 
  in 
  running 
  water, 
  but 
  occasional 
  individuals 
  were 
  

   also 
  found 
  in 
  the 
  mud 
  in 
  other 
  wooded 
  streams. 
  Imagines, 
  bred 
  from 
  these, 
  began 
  to 
  

  

  Fig. 
  23. 
  Tabanus 
  atrimanus, 
  Lw. 
  ; 
  (a) 
  pupal 
  aster 
  of 
  <$, 
  X 
  35 
  ; 
  (b) 
  pupal 
  aster 
  of 
  $ 
  ; 
  

   (b 
  ) 
  dorso-lateral 
  comb 
  of 
  $, 
  X 
  70. 
  

  

  -emerge 
  on 
  November 
  25th. 
  At 
  the 
  same 
  spot 
  in 
  the 
  Ruo 
  River 
  some 
  other 
  larvae 
  were 
  

   found 
  which 
  may 
  be 
  those 
  of 
  T. 
  pertinens, 
  but 
  they 
  were 
  not 
  bred 
  through. 
  The 
  

   larvae 
  (Plate 
  xxviii, 
  fig. 
  15) 
  are 
  strikingly 
  distinct 
  from 
  those 
  of 
  the 
  apparently 
  

   closely 
  allied 
  T. 
  variabilis, 
  Lw. 
  They 
  are 
  of 
  a 
  somewhat 
  opaque 
  yellowish 
  colour, 
  

   with 
  rather 
  faint 
  brown 
  pigmented 
  areas. 
  The 
  pseudopodia 
  are 
  well 
  developed, 
  

  

  