﻿228 
  PROF. 
  M. 
  BEZZI. 
  

  

  Pterandrus, 
  Bezzi, 
  1918. 
  

  

  Pterandrus 
  rosa, 
  Karsch, 
  var. 
  fascivenfris, 
  nov. 
  

  

  Differs 
  from 
  the 
  type 
  in 
  having 
  well 
  developed 
  blackish 
  bands 
  on 
  the 
  abdomen. 
  

  

  <J 
  $. 
  Length 
  of 
  body 
  5-5.5 
  mm. 
  ; 
  of 
  ovipositor 
  about 
  1 
  mm. 
  ; 
  of 
  wing 
  5*5-6 
  mm. 
  

  

  Head, 
  its 
  appendages 
  and 
  bristles 
  exactly 
  as 
  in 
  rosa. 
  Thorax 
  and 
  scutellum 
  like- 
  

   wise, 
  but 
  the 
  dorsum 
  of 
  the 
  mesonotum 
  in 
  fully 
  coloured 
  specimens 
  seems 
  to 
  be 
  darker 
  

   and 
  more 
  densely 
  grey-dusted. 
  The 
  chaetotaxy 
  is 
  the 
  same, 
  the 
  single 
  mjpl. 
  

   being 
  present. 
  The 
  abdomen 
  in 
  both 
  sexes 
  shows 
  a 
  distinct, 
  complete, 
  blackish, 
  

   rather 
  shining 
  cross 
  band 
  on 
  the 
  apical 
  half 
  of 
  the 
  second 
  segment 
  ; 
  the 
  third 
  and 
  

   fourth 
  segments 
  are 
  whitish, 
  but 
  in 
  the 
  female 
  they 
  have 
  a 
  distinct 
  dark 
  cross 
  

   band 
  at 
  base. 
  The 
  ovipositor 
  is 
  shining 
  reddish, 
  with 
  a 
  distinct 
  black 
  base 
  and 
  with 
  

   a 
  less 
  intense 
  apical 
  black 
  border, 
  but 
  these 
  dark 
  parts 
  are 
  not 
  sharply 
  separated. 
  

   The 
  legs 
  are 
  as 
  in 
  rosa, 
  the 
  male 
  having 
  the 
  middle 
  femora 
  quite 
  simple, 
  and 
  the 
  

   middle 
  tibiae 
  feathered 
  on 
  the 
  apical 
  half 
  alone 
  ; 
  the 
  front 
  femora 
  of 
  the 
  male 
  are 
  

   not 
  densely 
  ciliated. 
  The 
  wing 
  pattern 
  is 
  the 
  same 
  as 
  in 
  rosa, 
  but 
  the 
  stigma 
  is 
  

   blackish, 
  with 
  the 
  apical 
  third 
  hyaline. 
  

  

  Type 
  (J, 
  type 
  $, 
  and 
  an 
  additional 
  female 
  specimen 
  from 
  Uganda, 
  Entebbe, 
  

   17.viii.1911 
  (C. 
  C. 
  Gowdey); 
  another 
  male 
  specimen 
  (more 
  lightly 
  coloured 
  owing 
  

   to 
  immaturity) 
  from 
  Uganda, 
  Kampala, 
  5.xii.l916 
  (C. 
  C. 
  Gowdey). 
  

  

  The 
  species 
  Pterandrus 
  anonae, 
  P. 
  colae, 
  P. 
  rosa 
  and 
  Pardalaspis 
  morstatti 
  are 
  

   very 
  closely 
  allied 
  and 
  have 
  a 
  similar 
  wing 
  pattern 
  ; 
  the 
  feathering 
  of 
  the 
  middle 
  

   legs 
  in 
  the 
  male 
  decreases 
  from 
  the 
  two 
  former 
  (which 
  have 
  femora 
  and 
  tibiae 
  

   feathered) 
  to 
  the 
  third, 
  in 
  which 
  only 
  the 
  tibiae 
  are 
  feathered, 
  and 
  to 
  the 
  fourth, 
  

   in 
  which 
  they 
  are 
  not 
  feathered 
  at 
  all. 
  The 
  two 
  former 
  species 
  agree 
  also 
  in 
  the 
  

   ciliation 
  of 
  the 
  front 
  femora, 
  which 
  is 
  lacking 
  in 
  the 
  two 
  latter 
  ; 
  morstatti 
  in 
  the 
  

   length 
  of 
  the 
  ovipositor 
  agrees 
  with 
  colae, 
  while 
  anonae 
  and 
  rosa 
  have 
  a 
  short 
  

   ovipositor. 
  In 
  a 
  more 
  natural 
  classification 
  P. 
  morstatti 
  must 
  be 
  placed 
  in 
  the 
  genus 
  

   Pterandrus, 
  notwithstanding 
  the 
  lack 
  of 
  feathering 
  on 
  the 
  middle 
  legs 
  in 
  the 
  male. 
  

  

  Pardalaspis, 
  Bezzi, 
  1918. 
  

  

  I 
  will 
  give 
  here 
  another 
  table 
  for 
  determining 
  the 
  rather 
  numerous 
  species 
  of 
  

   the 
  present 
  genus, 
  excluding 
  inscripta, 
  Graham 
  (belonging 
  to 
  Trirhithrum), 
  and 
  

   with 
  the 
  addition 
  of 
  two 
  new 
  species. 
  

   1(18). 
  Wings 
  with 
  the 
  band 
  across 
  the 
  hind 
  cross-vein 
  quite 
  isolated, 
  and 
  without 
  

  

  a 
  complete 
  middle 
  band, 
  or 
  rarely 
  with 
  a 
  small 
  isolated 
  streak 
  on 
  the 
  

  

  last 
  portion 
  of 
  the 
  fourth 
  longitudinal 
  vein. 
  

   2(15). 
  The 
  black 
  spots 
  of 
  the 
  scutellum 
  very 
  broad, 
  quadrate 
  or 
  rectangular 
  in 
  

  

  shape, 
  closely 
  approximated, 
  and 
  nearly 
  covering 
  the 
  whole 
  surface. 
  

  

  3 
  (4). 
  Wings 
  with 
  the 
  marginal 
  band 
  isolated 
  (as 
  in 
  Pterandrus) 
  ; 
  arista 
  shortly 
  

  

  plumose 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  morstatti, 
  Bezzi. 
  

  

  4 
  (3). 
  Wings 
  usually 
  with 
  the 
  marginal 
  band 
  broadly 
  united 
  at 
  stigma 
  with 
  the 
  

  

  basal 
  one 
  ; 
  when 
  they 
  are 
  separated, 
  the 
  arista 
  is 
  pubescent 
  only. 
  

   5(14). 
  Last 
  portion 
  of 
  the 
  fourth 
  longitudinal 
  vein 
  destitute 
  of 
  an 
  oblique 
  dark 
  

   streak 
  across 
  its 
  middle. 
  

  

  