﻿190 
  

  

  ROBERT 
  NEWSTEAD. 
  

  

  and 
  rather 
  long 
  ; 
  digitules 
  normal. 
  Ana] 
  cleft 
  free 
  and 
  a 
  little 
  more 
  than 
  twice 
  the 
  

   length 
  of 
  the 
  lobes 
  ; 
  the 
  latter 
  (fig. 
  12, 
  b) 
  rather 
  elongate 
  and 
  obtusely 
  rounded 
  distally. 
  

   Stigmatic 
  clefts 
  very 
  small 
  ; 
  spines 
  three, 
  all 
  robust 
  and 
  blunt, 
  the 
  laterals 
  almost 
  

   equal 
  in 
  size 
  to 
  the 
  central 
  one. 
  Marginal 
  spines 
  (fig. 
  12, 
  c) 
  long 
  and 
  very 
  acute, 
  

   the 
  tips 
  in 
  many 
  cases 
  appearing 
  almost 
  flagellate 
  ; 
  they 
  are 
  placed 
  very 
  closely 
  

   together 
  and 
  are 
  continuous 
  along 
  the 
  stigmatic 
  clefts. 
  Stigmata 
  with 
  a 
  large 
  trumpet 
  

   shaped 
  peritreme, 
  and 
  placed 
  unusually 
  near 
  the 
  margin 
  of 
  the 
  body. 
  There 
  is 
  a 
  

   large 
  closely 
  packed 
  group 
  of 
  multilocular 
  gland-pores 
  on 
  the 
  inner 
  walls 
  of 
  the 
  anal 
  

   cleft, 
  close 
  up 
  to 
  the 
  lobes. 
  A 
  few 
  minute 
  gland-pores 
  occur 
  in 
  the 
  densely 
  chitinous 
  

   patch 
  surrounding 
  the 
  anal 
  lobes. 
  Length, 
  1*7-2 
  '3 
  ; 
  width, 
  1 
  -4-1-8. 
  

  

  Female, 
  young 
  adult. 
  Similar 
  to 
  the 
  old 
  adult, 
  but 
  the 
  marginal 
  spines 
  are 
  much 
  

   more 
  bluntly 
  pointed 
  and 
  the 
  chitinous 
  patch 
  surrounding 
  the 
  anal 
  lobes 
  is 
  wanting. 
  

  

  British 
  Guiana: 
  "Cattle 
  Trail 
  Survey," 
  the 
  insects 
  enclosed 
  by 
  ants 
  (Acromyrmex 
  

   sp.) 
  in 
  small 
  paper 
  nests 
  1919 
  (A. 
  A. 
  Abraham 
  per 
  G. 
  E. 
  Bodkin). 
  

  

  Fig. 
  12. 
  Lecanium 
  inquilinum, 
  Newst., 
  sp. 
  n., 
  

   $; 
  a, 
  antenna; 
  b, 
  anal 
  lobes; 
  c, 
  marginal 
  spines. 
  

  

  The 
  form 
  and 
  arrangement 
  of 
  the 
  marginal 
  spines 
  recall 
  those 
  seen 
  in 
  certain 
  

   species 
  of 
  Pulvinaria 
  ; 
  but 
  the 
  species 
  clearly 
  belongs 
  to 
  Lecanium 
  and 
  somewhat 
  

   resembles 
  the 
  hollow 
  hemispherical 
  species. 
  Taken 
  in 
  association 
  with 
  Lecanium 
  

   deformosum, 
  sp. 
  n., 
  and 
  Pseudococcus 
  inquilinus, 
  sp. 
  n. 
  

  

  Lecanium 
  (Eulecanium) 
  deformosum, 
  sp. 
  now 
  

  

  Female, 
  adult 
  (fig. 
  13, 
  a-d). 
  Dorsum 
  rather 
  flat 
  ; 
  sides 
  relatively 
  thick 
  ; 
  general 
  

   form 
  very 
  irregular 
  and 
  distorted, 
  some 
  examples 
  being 
  broader 
  than 
  long 
  and 
  others 
  

   more 
  or 
  less 
  elongate, 
  but 
  the 
  margins 
  in 
  all 
  cases 
  (12 
  examples) 
  are 
  asymmetrical 
  

   and 
  often 
  distorted 
  to 
  a 
  marked 
  degree. 
  Antennae 
  (fig. 
  13, 
  e) 
  of 
  six 
  segments 
  ; 
  the 
  

   3rd 
  and 
  6th 
  longest. 
  Legs 
  with 
  the 
  tibio-tarsal 
  segments 
  either 
  distinctly 
  articulated 
  

   or 
  partly 
  so, 
  rarely 
  completely 
  fused 
  ; 
  leg 
  i. 
  (fig. 
  13,/) 
  with 
  the 
  tibia 
  generally 
  strongly 
  

   curved. 
  Anal 
  lobes 
  (fig. 
  13, 
  g) 
  very 
  broadly 
  dilated 
  distally. 
  Anal 
  cleft 
  faintly 
  fused, 
  

   but 
  easily 
  separated 
  after 
  maceration 
  in 
  KOH. 
  Stigmatic 
  clefts 
  small, 
  or 
  seated 
  

   in 
  faint 
  depressions 
  ; 
  spines 
  (fig. 
  13, 
  h) 
  three, 
  the 
  laterals 
  normally 
  very 
  short, 
  stout, 
  

  

  