﻿118 
  CHAS. 
  K. 
  BRAIN. 
  

  

  median 
  ridge. 
  With 
  the 
  roughened 
  secretion 
  removed 
  the 
  colour 
  and 
  general 
  appear- 
  

   ance 
  of 
  this 
  species 
  is 
  very 
  like 
  the 
  figure 
  Green 
  gives 
  of 
  his 
  L. 
  azadirachtae. 
  

  

  $ 
  puparium 
  of 
  the 
  usual 
  type, 
  pale 
  buff-coloured, 
  not 
  yellow 
  as 
  is 
  the 
  ij> 
  test. 
  

  

  Larva 
  yellow, 
  0*5 
  mm. 
  long, 
  and 
  0'24 
  mm. 
  wide. 
  Antennae 
  and 
  legs 
  well 
  developed. 
  

   Antennae 
  5-segmented 
  ; 
  basal 
  segment 
  cylindrical, 
  hardly 
  as 
  wide 
  as 
  ii. 
  The 
  

   posterior 
  extremity 
  of 
  the 
  body 
  is 
  narrowed 
  and 
  deeply 
  and 
  roundly 
  indented, 
  so 
  that 
  

   there 
  appear 
  to 
  be 
  two 
  large 
  caudal 
  lobes. 
  The 
  inner 
  margins 
  of 
  these 
  have 
  chitinous 
  

   plates 
  similar 
  to 
  those 
  of 
  the 
  adult 
  ; 
  the 
  transverse 
  chitinous 
  bar 
  in 
  front 
  of 
  these 
  is 
  

   not 
  very 
  conspicuous. 
  The 
  caudal 
  lobes 
  each 
  bear 
  one 
  very 
  long 
  seta, 
  about 
  0*2 
  mm. 
  

   in 
  length 
  and 
  one 
  or 
  two 
  short 
  spines. 
  

  

  Second 
  stage 
  $ 
  about 
  1*2 
  mm. 
  long. 
  In 
  this 
  stage 
  the 
  body 
  has 
  become 
  more 
  

   rounded, 
  especially 
  at 
  the 
  posterior 
  extremity. 
  The 
  caudal 
  lobes 
  are 
  comparatively 
  

   shorter 
  and 
  their 
  extremities 
  are 
  curved 
  together, 
  and 
  the 
  long 
  caudal 
  setae 
  of 
  the 
  

   larva 
  are 
  replaced 
  by 
  two 
  stout 
  spines 
  about 
  35^ 
  in 
  length. 
  The 
  antennae 
  and 
  legs 
  

   are 
  situated 
  further 
  from 
  the 
  margin 
  and 
  appear 
  proportionately 
  smaller. 
  The 
  

   antennae 
  are 
  6-jointed. 
  

  

  Adult 
  % 
  cleared 
  and 
  mounted, 
  about 
  3 
  mm. 
  long, 
  almost 
  circular, 
  with 
  the 
  derm 
  

   colourless, 
  hyaline. 
  The 
  legs 
  are 
  well 
  developed, 
  but 
  small, 
  shorter 
  than 
  the 
  antennae 
  

   (180// 
  : 
  250/j). 
  The 
  three 
  pairs 
  of 
  legs 
  are 
  about 
  equally 
  developed 
  (fig. 
  218, 
  c). 
  The 
  

   antennae 
  are 
  normally 
  8-jointed, 
  but 
  occasionally 
  appear 
  9-jointed 
  through 
  the 
  

   pseudo-articulation 
  of 
  the 
  5th 
  segment 
  (fig. 
  218). 
  There 
  are 
  scattered 
  stout 
  spines, 
  

   about 
  27 
  ju 
  long, 
  on 
  thick 
  bases, 
  at 
  intervals 
  around 
  the 
  margin 
  (fig. 
  218, 
  6). 
  The 
  

   stigmatic 
  spines 
  are 
  usually 
  unequal, 
  one 
  long 
  and 
  one 
  short, 
  curved, 
  slightly 
  clubbed 
  

   (fig. 
  218, 
  a). 
  Figure-8 
  glands 
  small, 
  uniformly 
  scattered 
  over 
  the 
  surface. 
  

  

  Remarks. 
  This 
  species 
  is 
  similar 
  in 
  many 
  respects 
  to 
  Lecaniodiaspis 
  africana, 
  Newst., 
  

   but 
  is 
  readily 
  distinguished 
  by 
  the 
  smaller 
  size 
  and 
  the 
  fact 
  that 
  the 
  antennal 
  segments 
  

   iii, 
  iv, 
  v, 
  and 
  vi, 
  are 
  longer 
  than 
  wide 
  and 
  the 
  tarsus 
  is 
  considerably 
  longer 
  than 
  the 
  

   tibia 
  (fig. 
  218, 
  c). 
  

  

  Habitat: 
  On 
  wild 
  almond 
  (Brabeium 
  stellati 
  folium, 
  Linn.); 
  collected 
  by 
  C. 
  P. 
  

   Lounsbury, 
  Newlands, 
  1896 
  (Cape 
  No.: 
  1274); 
  also 
  collected 
  by 
  C. 
  W. 
  Mally, 
  

   December 
  1915. 
  

  

  Collection 
  No. 
  : 
  298. 
  

  

  178. 
  Lecaniodiaspis 
  tarsalis, 
  Newst. 
  (Plate 
  ix, 
  fig. 
  203 
  ; 
  Plate 
  x, 
  fig. 
  217). 
  

  

  Lecanium 
  tarsalis, 
  Newst., 
  Bull. 
  Ent. 
  Res. 
  viii, 
  p. 
  16, 
  1917. 
  

  

  Test 
  of 
  young 
  $, 
  about 
  1*5 
  mm. 
  long, 
  flat, 
  with 
  a 
  distinct 
  median 
  keel, 
  purplish 
  grey 
  

   in 
  colour. 
  

  

  Test 
  of 
  adult 
  $ 
  buff-brown, 
  about 
  3 
  mm. 
  long, 
  2 
  mm. 
  broad 
  and 
  1 
  mm. 
  high, 
  with 
  

   the 
  dorsum 
  roughened 
  by 
  a 
  series 
  of 
  low 
  tubercular 
  projections. 
  There 
  is 
  a 
  distinct 
  

   median 
  series 
  and 
  a 
  sub-dorsal 
  row 
  on 
  each 
  side, 
  the 
  marginal 
  areas 
  being 
  irregularly 
  

   roughened. 
  

  

  <J 
  puparium 
  creamy 
  white, 
  about 
  1*3 
  mm. 
  long, 
  and 
  0*9 
  mm. 
  wide; 
  similar 
  in 
  form 
  

   to 
  the 
  § 
  test 
  but 
  more 
  flat 
  and 
  much 
  lighter 
  in 
  colour. 
  

  

  Adult 
  §, 
  mounted, 
  about 
  1*6 
  mm. 
  long 
  and 
  1*1 
  mm. 
  broad, 
  regularly 
  oval, 
  with 
  a 
  

   complete 
  regular 
  marginal 
  row 
  of 
  stout 
  spines 
  30^ 
  in 
  length, 
  about 
  15 
  on 
  each 
  side 
  

  

  