﻿THE 
  COCCIDAE 
  OF 
  SOUTH 
  AFRICA. 
  117 
  

  

  comparatively 
  small, 
  with, 
  a 
  long 
  rostral 
  loop. 
  The 
  antennae 
  (fig. 
  213, 
  a) 
  are 
  short, 
  

   annular, 
  of 
  four 
  or 
  five 
  segments. 
  Legs 
  entirely 
  absent. 
  The 
  whole 
  dorsal 
  surface 
  

   has 
  numerous 
  scattered, 
  minute 
  8-shaped 
  glands. 
  Cribriform 
  plates 
  (fig. 
  213, 
  b) 
  

   small, 
  inconspicuous, 
  few 
  in 
  number. 
  The 
  anal 
  cleft 
  is 
  as 
  shown 
  in 
  fig. 
  213. 
  The 
  

   caudal 
  setae 
  are 
  strong, 
  and 
  shorter 
  than 
  those 
  of 
  the 
  anal 
  ring 
  (60/*). 
  In 
  addition 
  

   to 
  the 
  two 
  caudal 
  setae 
  there 
  are 
  five 
  or 
  six 
  short 
  spines 
  on 
  each 
  caudal 
  lobe. 
  Anal 
  

   ring 
  with 
  8 
  long 
  hairs 
  (100/*). 
  

  

  Habitat 
  : 
  On 
  stems 
  of 
  Hibiscus, 
  Durban 
  ; 
  collected 
  by 
  C. 
  P. 
  v. 
  d. 
  Merwe, 
  July 
  1916. 
  

  

  Collection 
  No. 
  : 
  301. 
  

  

  176. 
  Lecaniodiaspis 
  magna, 
  sp. 
  n. 
  (Plate 
  ix, 
  figs. 
  206, 
  209 
  ; 
  Plate 
  x, 
  fig. 
  214). 
  

  

  Adult 
  females 
  congregate 
  on 
  the 
  crown 
  of 
  the 
  host-plant 
  at 
  just 
  about 
  ground- 
  

   level. 
  

  

  Test 
  of 
  adult 
  £ 
  about 
  6 
  mm. 
  long, 
  4 
  '5 
  mm. 
  wide, 
  and 
  3 
  mm. 
  high, 
  regularly 
  broad 
  

   oval, 
  or 
  slightly 
  narrowed 
  in 
  front 
  and 
  with 
  the 
  hind 
  margin 
  very 
  slightly 
  flattened, 
  

   with 
  a 
  faint 
  median 
  indentation. 
  The 
  dorsum 
  is 
  very 
  convex, 
  ventral 
  surface 
  

   slightly 
  rounded. 
  The 
  test 
  is 
  entire 
  and 
  homogeneous 
  in 
  texture, 
  smooth 
  or 
  very 
  

   faintly 
  roughened, 
  without 
  ridges, 
  but 
  occasionally 
  with 
  very 
  faint 
  ribbed 
  corrugations 
  

   at 
  the 
  sides. 
  The 
  colour 
  is 
  of 
  a 
  uniform 
  biscuit 
  tint 
  (fig. 
  206). 
  

  

  When 
  received, 
  the 
  largest 
  specimens 
  removed 
  for 
  mounting 
  contained 
  many 
  eggs. 
  

   The 
  body 
  entirely 
  fills 
  the 
  test, 
  which 
  is 
  thin, 
  tough 
  and 
  papery. 
  In 
  boiling 
  KOH 
  the 
  

   test 
  breaks 
  down 
  and 
  the 
  liquid 
  is 
  stained 
  a 
  rich 
  brown 
  colour, 
  while 
  the 
  J 
  takes 
  on 
  

   a 
  rose-pink 
  hue. 
  When 
  boiled 
  for 
  some 
  time 
  the 
  body 
  wall 
  is 
  clear, 
  hyaline, 
  and 
  very 
  

   delicate. 
  

  

  Adult 
  ?, 
  cleared 
  and 
  mounted, 
  about 
  3 
  '7 
  mm. 
  long, 
  almost 
  circular, 
  hyaline, 
  with 
  

   the 
  antennae 
  and 
  anal 
  armature 
  dense. 
  Legs 
  extremely 
  rudimentary, 
  represented 
  

   by 
  a 
  small 
  (50/t) 
  conical 
  tubercle, 
  with 
  a 
  minute 
  process 
  at 
  the 
  tip 
  and 
  several 
  delicate 
  

   hairs 
  which 
  appear 
  to 
  represent 
  the 
  digitules 
  (fig. 
  214, 
  a). 
  Antennae 
  comparatively 
  

   short 
  (170 
  ju), 
  of 
  nine 
  segments, 
  which 
  are 
  annular 
  and 
  slightly 
  tapering 
  to 
  the 
  apex 
  

   (fig. 
  214). 
  Anal 
  ring 
  with 
  10 
  stout 
  hairs. 
  Cribriform 
  plates 
  small, 
  with 
  comparatively 
  

   large 
  pores. 
  Caudal 
  spines 
  short 
  (27/*), 
  two 
  on 
  each 
  lobe. 
  The 
  anal 
  plates 
  are 
  broad, 
  

   each 
  with 
  deep 
  wrinkles 
  and 
  two 
  stout 
  spines, 
  and 
  possibly 
  two 
  more 
  slender, 
  one 
  

   above 
  and 
  one 
  below 
  (fig. 
  214, 
  b). 
  These 
  latter 
  are 
  missing 
  in 
  the 
  slides, 
  but 
  the 
  pores 
  

   indicate 
  their 
  presence. 
  

  

  Remarks. 
  Two 
  plants 
  were 
  submitted, 
  the 
  one 
  crown 
  bore 
  seven 
  large 
  females 
  

   ranging 
  from 
  5 
  to 
  6 
  mm. 
  in 
  length, 
  the 
  other 
  about 
  50 
  specimens 
  identical 
  in 
  

   appearance 
  but 
  smaller, 
  all 
  the 
  tests 
  being 
  about 
  3 
  mm. 
  in 
  length 
  (fig. 
  209). 
  

  

  Habitat 
  : 
  On 
  crowns 
  of 
  native 
  bush 
  with 
  small 
  narrow 
  leaves 
  ; 
  collected 
  at 
  Groot 
  

   Drakenstein 
  and 
  sent 
  in 
  by 
  C. 
  W. 
  Mally, 
  June 
  1916. 
  

  

  Collection 
  No. 
  : 
  27. 
  

  

  177. 
  Lecaniodiaspis 
  brabei, 
  sp. 
  n. 
  (Plate 
  x, 
  figs. 
  218-218, 
  a). 
  

  

  Test 
  of 
  adult 
  $ 
  about 
  3*2 
  mm. 
  long, 
  2 
  mm. 
  wide, 
  and 
  1*5 
  mm. 
  high, 
  oval, 
  convex, 
  

   ochre-yellow, 
  with 
  a 
  thin 
  covering 
  of 
  greyish 
  secretion 
  which 
  is 
  easily 
  flaked 
  off. 
  The 
  

   dorsum 
  is 
  not 
  quite 
  smooth, 
  but 
  has 
  faint 
  rounded 
  rib-marks 
  and 
  occasionally 
  a 
  faint 
  

  

  