﻿THE 
  TABANIDAE 
  OF 
  SOUTHERN 
  NY 
  AS 
  ALAND. 
  

  

  319 
  

  

  from 
  T. 
  par 
  by 
  having 
  brown, 
  not 
  green 
  eyes. 
  The 
  eyes 
  of 
  the 
  male 
  are 
  yellowish, 
  

   slightly 
  translucent, 
  and 
  with 
  a 
  single 
  apparently 
  deep-seated 
  spot. 
  Five 
  males 
  and 
  

   three 
  females 
  were 
  bred 
  between 
  the 
  end 
  of 
  September 
  and 
  the 
  beginning 
  of 
  November. 
  

   The 
  pale-coloured 
  larva 
  has 
  rather 
  long 
  pseudopodia, 
  a 
  ring 
  of 
  pigment 
  of 
  varying 
  

  

  Fig. 
  30. 
  

  

  Tabanus 
  medionotatus, 
  Aust.* 
  d 
  ; 
  («) 
  pupal 
  aster, 
  X 
  35 
  ; 
  (a 
  1 
  ) 
  profile 
  of 
  

   last 
  segment 
  of 
  pupa, 
  X 
  35. 
  

  

  width 
  round 
  the 
  base 
  of 
  the 
  syphon 
  (Plate 
  xxviii, 
  fig. 
  13), 
  and 
  another 
  ring 
  round 
  

   the 
  anus, 
  which 
  is 
  unusually 
  prominent 
  in 
  the 
  living 
  larvae. 
  There 
  are 
  also 
  present 
  

   two 
  pseudopodia 
  immediately 
  anterior 
  to 
  the 
  anus, 
  but 
  these 
  are 
  not 
  visible 
  in 
  the 
  

   somewhat 
  contracted 
  preserved 
  specimen 
  and 
  therefore 
  are 
  not 
  shown 
  in 
  the 
  figure. 
  

  

  The 
  pupal 
  aster 
  resembles 
  that 
  of 
  T. 
  obscuripes 
  in 
  having 
  a 
  large 
  and 
  even 
  longer, 
  

   but 
  less 
  horizontal, 
  middle 
  pair 
  of 
  hooks. 
  Not 
  only 
  the 
  dorso-lateral, 
  but 
  most 
  of 
  

   the 
  lateral, 
  comb 
  is 
  absent. 
  

  

  Tabanus 
  ditaeniatus, 
  Macq. 
  

  

  This 
  is 
  one 
  of 
  the 
  mid-season 
  species 
  in 
  Nyasaland, 
  i.e., 
  it 
  is 
  not 
  on 
  the 
  wing 
  until 
  

   January, 
  a 
  month 
  or 
  more 
  after 
  the 
  beginning 
  of 
  the 
  rains. 
  It 
  was 
  found 
  in 
  some 
  

   numbers 
  in 
  rather 
  open 
  country 
  to 
  the 
  north 
  of 
  Mt. 
  Mlanje, 
  especially 
  near 
  the 
  south 
  

   and 
  south-west 
  shores 
  of 
  Lake 
  Chilwa. 
  

  

  Though 
  there 
  is 
  considerable 
  general 
  resemblance 
  between 
  this 
  species 
  and 
  T. 
  

   fuscipes, 
  Ric, 
  there 
  can 
  be 
  no 
  question 
  that 
  they 
  are 
  distinct. 
  The 
  males 
  of 
  ditaeniatus 
  

   are 
  larger 
  than 
  those 
  of 
  fuscipes 
  and 
  are 
  much 
  less 
  hairy 
  insects, 
  with 
  a 
  paler 
  thorax 
  

   and 
  abdomen. 
  The 
  eyes 
  of 
  the 
  two 
  species 
  are 
  similar 
  in 
  this 
  sex, 
  but 
  the 
  upper 
  large 
  

   facets 
  of 
  fuscipes 
  are 
  of 
  a 
  somewhat 
  greener 
  colour 
  and 
  less 
  translucent. 
  The 
  females 
  

   are 
  distinguished, 
  inter 
  alia, 
  by 
  those 
  of 
  ditaeniatus 
  being 
  very 
  much 
  paler 
  on 
  the 
  under- 
  

   side, 
  especially 
  of 
  the 
  abdomen. 
  In 
  both 
  species, 
  the 
  yellowish 
  translucent 
  eyes 
  are 
  

   horizontally 
  by 
  a 
  narrow 
  line 
  of 
  a 
  purplish 
  colour. 
  

  

  Tabanus 
  fuscipes, 
  Hie. 
  

  

  This 
  species 
  resembles 
  the 
  foregoing 
  in 
  its 
  habits, 
  time 
  of 
  emergence, 
  etc., 
  though 
  

   it 
  has 
  a 
  far 
  more 
  restricted 
  range. 
  Newly-emerged 
  examples 
  of 
  both 
  species 
  were 
  

  

  