﻿THE 
  COCCIDAE 
  OF 
  SOUTH 
  AFKICA. 
  119 
  

  

  (fig. 
  217, 
  b). 
  Legs 
  and 
  antennae 
  present. 
  All 
  three 
  pairs 
  of 
  legs 
  about 
  equally 
  

   developed, 
  all 
  longer 
  than 
  the 
  antennae. 
  Antennae 
  9-jointed 
  (fig. 
  217). 
  Caudal 
  

   setae 
  stout, 
  about 
  80 
  ju 
  in 
  length. 
  Cribriform 
  plates 
  small 
  (12 
  ju 
  diameter), 
  yellow 
  

   (fig. 
  217, 
  a). 
  On 
  the 
  venter, 
  a 
  little 
  anterior 
  to 
  the 
  position 
  of 
  the 
  anal 
  ring, 
  are 
  two 
  

   long 
  straight 
  slender 
  setae, 
  about 
  115 
  ju 
  in 
  length, 
  pointing 
  backward. 
  

  

  Habitat 
  : 
  On 
  native 
  tree 
  (Dombeya 
  rotundifolia), 
  Pretoria 
  ; 
  collected 
  by 
  the 
  writer, 
  

   September 
  1914. 
  On 
  Hibiscus 
  in 
  a 
  nursery, 
  Pretoria 
  ; 
  collected 
  by 
  A. 
  Kelly, 
  June 
  

   1916. 
  

  

  Collection 
  No. 
  : 
  23. 
  

  

  Genus 
  Gerococcus, 
  Comst. 
  

  

  Adult 
  $ 
  enclosed 
  in 
  a 
  dense 
  waxy 
  test 
  without 
  a 
  marginal 
  fringe 
  as 
  in 
  

   Aster 
  olecanium, 
  and 
  generally 
  without 
  waxy 
  processes. 
  The 
  test 
  is 
  usually 
  dense, 
  

   opaque, 
  not 
  semi-transparent, 
  and 
  simulates 
  the 
  test 
  of 
  a 
  Tachardia 
  more 
  than 
  that 
  

   of 
  an 
  Aster 
  olecanium. 
  The 
  posterior 
  end 
  of 
  the 
  test 
  is 
  sometimes 
  slightly 
  produced 
  

   and 
  upturned, 
  with 
  the 
  anal 
  aperture 
  at 
  the 
  extremity. 
  

  

  Adult 
  § 
  with 
  the 
  caudal 
  extremity 
  produced 
  into 
  a 
  rounded 
  protuberance 
  which 
  

   bears 
  the 
  anal 
  armature. 
  There 
  are 
  two 
  stout 
  lobes, 
  each 
  with 
  a 
  long 
  seta 
  and 
  

   several 
  spines 
  ; 
  the 
  space 
  between 
  them 
  is 
  db 
  chitinised, 
  with 
  a 
  prominent 
  rounded 
  

   tongue-shaped 
  plate. 
  Antennae 
  and 
  legs 
  rudimentary. 
  Derm 
  with 
  conspicuous 
  

   8-shaped 
  glands. 
  Stigmatic 
  spines 
  absent. 
  

  

  (J 
  puparium 
  elongate, 
  tubular, 
  with 
  a 
  large 
  oval 
  or 
  circular 
  operculum 
  above 
  the 
  

   posterior 
  extremity. 
  

  

  Key 
  to 
  South 
  African 
  Species 
  o/Cero 
  coccus. 
  

   A. 
  Test 
  smooth, 
  ± 
  globular, 
  brown 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  ovoides 
  (Ckll.). 
  

  

  AA. 
  Test 
  rough, 
  ornate, 
  brick-red 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  ornatus, 
  Green. 
  

  

  AAA. 
  Test 
  yellowish 
  or 
  brownish. 
  

  

  Marginal 
  8-shaped 
  glands 
  much 
  larger 
  than 
  those 
  on 
  dorsum 
  passerinae, 
  sp. 
  n. 
  

  

  Marginal 
  8-shaped 
  glands 
  little 
  if 
  any 
  larger 
  . 
  . 
  . 
  . 
  . 
  . 
  royenae, 
  sp. 
  n. 
  

  

  179. 
  Gerococcus 
  ovoides 
  (Ckll.) 
  (Plate 
  x, 
  fig. 
  219). 
  

  

  Pollinia 
  ovoides, 
  Ckll., 
  The 
  Entom. 
  xxxiv, 
  p. 
  225, 
  1901. 
  

  

  Professor 
  Cockerell's 
  description 
  is 
  as 
  follows 
  : 
  — 
  ■ 
  

  

  ' 
  ? 
  scale 
  a 
  rounded 
  conical 
  object 
  much 
  like 
  a 
  Lepidopterous 
  egg, 
  about 
  1J 
  millim. 
  

   diam., 
  roughened 
  radiately, 
  pale 
  brown 
  with 
  four 
  longitudinal 
  stripes 
  of 
  white 
  

   secretion 
  converging 
  to 
  the 
  top 
  of 
  the 
  scale, 
  which 
  is 
  usually 
  reddish. 
  

  

  " 
  (J 
  scale 
  elongated, 
  about 
  -§ 
  millim. 
  long, 
  roughened, 
  yellowish 
  or 
  pink, 
  with 
  an 
  

   oblique 
  terminal 
  cap. 
  

  

  " 
  $ 
  scales, 
  soaked 
  in 
  liquor 
  potassae, 
  give 
  a 
  deep 
  orange-brown 
  colour, 
  and 
  the 
  

   insects 
  themselves 
  turn 
  deep 
  crimson 
  ; 
  § 
  adult 
  globose 
  ; 
  skin 
  with 
  many 
  simple 
  round 
  

   glands 
  and 
  tubular 
  glands, 
  and 
  some 
  figure-of 
  -8 
  glands 
  ; 
  anal 
  ring 
  with 
  numerous 
  hairs 
  ; 
  

   caudal 
  lobes 
  prominent, 
  conical, 
  about 
  45/j 
  long, 
  with 
  a 
  few 
  small 
  spines, 
  and 
  ending 
  

   in 
  stout 
  bristles 
  about 
  90ju 
  long 
  ; 
  mouth-parts 
  well 
  developed, 
  but 
  small 
  ; 
  labium 
  

   short 
  and 
  broad, 
  dimerous, 
  the 
  last 
  joint 
  with 
  bristles 
  on 
  its 
  margin 
  ; 
  antennae 
  

  

  