﻿46 
  

  

  JAMES 
  WATERSTON. 
  

  

  an 
  uncoloured 
  membranous 
  area, 
  concealed 
  for 
  the 
  most 
  part 
  beneath 
  the 
  posterior 
  

   edge 
  of 
  the 
  preceding 
  tergite. 
  At 
  the 
  extreme 
  side 
  of 
  their 
  dorsal 
  portion 
  the 
  tergites 
  

   show 
  one 
  or 
  more 
  strongly 
  marked 
  cell-like 
  chitinisings 
  (fig. 
  2, 
  a). 
  Spiracle 
  small, 
  

   circular. 
  Stylet 
  with 
  three 
  major 
  and 
  two 
  minor 
  bristles, 
  the 
  longest 
  four-fifths 
  the 
  

   distance 
  between 
  the 
  processes 
  themselves. 
  Free 
  portion 
  of 
  ovipositor 
  sheath 
  one- 
  

   fourth 
  of 
  the 
  base. 
  

  

  Length, 
  1-4 
  mm. 
  ; 
  alar 
  expanse, 
  2-4 
  mm. 
  (In 
  the 
  largest 
  $ 
  the 
  length 
  is 
  1-6, 
  

   expanse, 
  2-7 
  ; 
  fore 
  wing, 
  1 
  mm.) 
  

  

  <J. 
  Head 
  one-fifth 
  wider 
  than 
  long 
  (deep) 
  ; 
  eyes 
  occupying 
  two-thirds 
  of 
  the 
  depth, 
  

   separated 
  at 
  the 
  level 
  of 
  the 
  anterior 
  ocellus 
  by 
  half 
  and 
  at 
  the 
  base 
  line 
  by 
  seven- 
  

   ninths 
  of 
  the 
  greatest 
  width. 
  Toruli 
  (3 
  : 
  2) 
  lying 
  mainly 
  above 
  the 
  base 
  line 
  of 
  the 
  

   eyes 
  ; 
  separated 
  ventrally 
  by 
  nearly 
  twice 
  or 
  from 
  the 
  mouth-edge 
  by 
  nearly^one 
  

  

  Fig. 
  2. 
  Right 
  half 
  of 
  second 
  tergite 
  of 
  (a) 
  Psyllaephagus 
  ccllulatus, 
  sp. 
  n. 
  ; 
  (b) 
  Encyrtus 
  

  

  pulvinatus, 
  sp. 
  n. 
  

  

  and 
  a 
  half 
  times 
  their 
  length. 
  Whole 
  surface 
  with 
  rather 
  fine 
  strongly 
  raised 
  pattern 
  

   and 
  numerous 
  short 
  bristles, 
  of 
  which 
  over 
  30 
  stand 
  on 
  the 
  combined 
  inter- 
  and 
  

   infra-torular 
  areas, 
  four 
  of 
  them 
  above 
  the 
  straight 
  clypeal 
  edge 
  being 
  a 
  little 
  longer. 
  

   Antenna 
  (fig. 
  1, 
  c), 
  length, 
  0-7 
  mm. 
  ; 
  9 
  (lO)-jointed 
  ; 
  scape 
  (2: 
  1) 
  more 
  than 
  twice 
  

   (7 
  : 
  3) 
  as 
  long 
  as 
  and 
  a 
  little 
  broader 
  (7 
  : 
  6) 
  than 
  the 
  pedicel 
  (1:1). 
  The 
  latter 
  

   nearlv 
  circular, 
  with 
  an 
  extremely 
  coarse 
  reticulation. 
  Ring 
  joint 
  (fig. 
  1, 
  d) 
  very 
  

   minute, 
  nearly 
  concealed 
  in 
  the 
  pedicel. 
  The 
  first 
  two 
  joints 
  of 
  the 
  funicle 
  together 
  

   about 
  one-fourth 
  longer 
  than 
  the 
  scape, 
  or 
  one-eighth 
  longer 
  than 
  the 
  club. 
  The 
  

   proportions 
  of 
  the 
  funicle 
  joints 
  and 
  club 
  are 
  : 
  length, 
  26, 
  27, 
  28, 
  32, 
  32, 
  32, 
  50 
  ; 
  

   breadth, 
  17, 
  18, 
  18, 
  17, 
  16, 
  17, 
  19. 
  The 
  club 
  is 
  solid; 
  tubular 
  hairs 
  numerous, 
  

   as 
  in 
  fig. 
  1, 
  c 
  Labium 
  narrow, 
  faintly 
  concave, 
  nearly 
  straight, 
  with 
  five 
  bristles 
  ; 
  

   mandible 
  as 
  in 
  fig. 
  1, 
  b 
  ; 
  maxillary 
  palpi, 
  9, 
  9, 
  9, 
  20 
  ; 
  labial 
  palpi, 
  11,6, 
  10. 
  

  

  