﻿296 
  PROF. 
  GUIDO 
  GRANDI. 
  

  

  Blastophaga 
  quadraticeps, 
  Mayr. 
  

  

  Verhandl. 
  d. 
  K.K. 
  zool. 
  bot. 
  Ges. 
  Wien, 
  B., 
  xxxv, 
  1885, 
  pp. 
  154, 
  161, 
  164, 
  176, 
  177. 
  

  

  $. 
  — 
  General 
  body 
  colour 
  tawny 
  brown, 
  dark 
  in 
  various 
  parts. 
  Base 
  of 
  antennae 
  

   and 
  legs 
  honey-coloured.* 
  

  

  Measurements. 
  Length 
  of 
  head, 
  0-36 
  mm. 
  ; 
  width, 
  0-36 
  mm. 
  ; 
  length 
  of 
  thorax, 
  

   including 
  propodeon, 
  0-64 
  mm. 
  ; 
  width 
  of 
  thorax, 
  0-45 
  mm. 
  ; 
  length 
  of 
  abdomen, 
  

   0-70 
  mm. 
  ; 
  that 
  of 
  the 
  free 
  portion 
  of 
  the 
  terebra, 
  0-96 
  mm. 
  ; 
  length 
  of 
  fore 
  wings, 
  

   1-22 
  mm 
  ; 
  width, 
  0-56 
  mm. 
  ; 
  length 
  of 
  hind 
  wings, 
  0-71 
  mm. 
  ; 
  greatest 
  width, 
  

   0-15 
  mm. 
  

  

  Head. 
  The 
  epicranium 
  (fig. 
  I, 
  1 
  ) 
  is 
  about 
  as 
  long 
  as 
  broad 
  ; 
  its 
  lateral 
  margins 
  

   in 
  front 
  of 
  the 
  eyes 
  (taken 
  between 
  the 
  mandibular 
  fossae) 
  are 
  as 
  long 
  as, 
  or 
  a 
  little 
  

   longer 
  than, 
  the 
  greatest 
  diameter 
  of 
  the 
  eyes 
  and 
  slightly 
  convex. 
  The 
  epistomal 
  edge 
  

   shows 
  a 
  feeble 
  angular 
  median 
  prominence 
  and 
  two 
  rounded 
  submedian 
  projections. 
  

   The 
  median 
  posterior 
  chitinised 
  area 
  of 
  the 
  frons 
  is 
  rather 
  limited 
  and 
  hardly 
  reaches 
  

   to 
  the 
  anterior 
  ocellus. 
  Bristles 
  as 
  in 
  figure. 
  Antennae 
  (fig. 
  1, 
  2 
  ) 
  with 
  the 
  scape 
  about 
  

   half 
  as 
  long 
  again 
  as 
  its 
  greatest 
  width 
  ; 
  third 
  joint 
  ending 
  in 
  a 
  laminate 
  process, 
  

   strongly 
  recurved, 
  rounded 
  off 
  at 
  the 
  apex, 
  and 
  with 
  some 
  subquadrangular 
  areas 
  

   more 
  strongly 
  chitinised 
  ; 
  fourth 
  joint 
  slightly 
  longer 
  than 
  wide 
  ; 
  fifth 
  joint 
  one- 
  

   half 
  longer 
  than 
  the 
  fourth 
  and 
  about 
  twice 
  its 
  greatest 
  width, 
  with 
  a 
  few 
  large 
  

   elongate 
  sensoria, 
  which 
  occupy 
  almost 
  its 
  whole 
  length 
  and 
  project 
  slightly 
  over 
  

   its 
  distal 
  extremity 
  ; 
  sixth 
  slightly 
  longer 
  than 
  the 
  fifth 
  and 
  about 
  equal 
  in 
  breadth, 
  

   and 
  with 
  similar 
  sensoria 
  ; 
  seventh 
  almost 
  as 
  long 
  as 
  the 
  sixth, 
  but 
  about 
  twice 
  as 
  

   broad 
  at 
  its 
  distal 
  extremity, 
  some 
  of 
  its 
  sensoria 
  projecting 
  slightly 
  distally. 
  others 
  

   for 
  one-third 
  or 
  half 
  their 
  length 
  ; 
  eighth 
  joint 
  a 
  little 
  longer 
  than 
  the 
  seventh 
  but 
  

   much 
  wider 
  distally, 
  strongly 
  contracted 
  at 
  base 
  and 
  provided 
  with 
  a 
  certain 
  number 
  

   of 
  sensoria, 
  some 
  of 
  which 
  occupy 
  its 
  whole 
  length 
  and 
  project 
  slightly 
  overits 
  apex 
  ; 
  

   others, 
  very 
  long, 
  rising 
  from 
  a 
  rather 
  large 
  base 
  at 
  the 
  distal 
  margin, 
  project 
  to 
  a 
  

   distance 
  equal 
  to 
  once 
  or 
  twice 
  the 
  length 
  of 
  the 
  joint 
  ; 
  others 
  extend 
  along 
  the 
  joint 
  

   for 
  a 
  certain 
  distance 
  and 
  project 
  strongly, 
  though 
  not 
  so 
  far 
  as 
  the 
  preceding 
  ones. 
  

   The 
  ninth 
  and 
  tenth 
  joints 
  similar 
  to 
  the 
  eighth, 
  though 
  the 
  ninth 
  is 
  a 
  little 
  longer 
  

   than 
  either 
  the 
  eighth 
  or 
  tenth, 
  and 
  with 
  similar 
  sensoria. 
  The 
  tenth 
  subfusiform 
  

   and 
  provided 
  with 
  many 
  long 
  and 
  projecting 
  sensoria. 
  Bristles 
  very 
  few 
  and 
  short, 
  

   and 
  distributed 
  as 
  in 
  figure. 
  Mandibles 
  (fig. 
  1, 
  3 
  ) 
  bidentate 
  at 
  the 
  apex. 
  The 
  

   proximal 
  process 
  about 
  as 
  long 
  as 
  the 
  body 
  of 
  the 
  mandible, 
  broadly 
  rounded 
  

   posteriorly, 
  and 
  with 
  seven 
  transverse 
  ridges, 
  the 
  first 
  (proximal) 
  has 
  a 
  tooth-like 
  

   appearance. 
  Bristles 
  as 
  in 
  figure. 
  First 
  maxillae 
  (fig. 
  1, 
  4 
  ) 
  with 
  a 
  couple 
  of 
  rather 
  

   short, 
  normally-shaped 
  distal, 
  marginal 
  bristles. 
  

  

  Thorax. 
  Pronotum 
  subtrapezoidal, 
  with 
  a 
  few 
  scattered 
  hairs, 
  scutum 
  of 
  the 
  

   mesonotum 
  almost 
  bare 
  ; 
  scapulae 
  with 
  a 
  submarginal 
  external 
  group 
  of 
  small 
  bristles 
  

   (six 
  or 
  little 
  more) 
  ; 
  axillae 
  with 
  six 
  to 
  nine 
  submarginal 
  internal 
  hairs 
  ; 
  scutellum 
  

   with 
  very 
  few 
  (four 
  or 
  five) 
  ; 
  parascutelli 
  bare. 
  Metanotum 
  with 
  few 
  small 
  sublateral 
  

   hairs. 
  

  

  Fore 
  wings 
  (fig. 
  1, 
  5 
  - 
  6 
  ) 
  about 
  twice 
  as 
  long 
  as 
  broad 
  and 
  broadly 
  rounded 
  at 
  the 
  

   distal 
  extremity 
  ; 
  submarginal 
  twice 
  as 
  long 
  as 
  the 
  marginal 
  and 
  postmarginal 
  ; 
  

   marginal 
  almost 
  as 
  long 
  as 
  the 
  postmarginal, 
  which 
  ends 
  indistinctl}' 
  ; 
  radius 
  a 
  little 
  

   longer 
  than 
  the 
  postmarginal 
  vein 
  and 
  directed 
  slightly 
  obliquely 
  towards 
  the 
  distal 
  

   extremity 
  of 
  the 
  wing 
  and 
  ending 
  in 
  an 
  elongated 
  dilatation 
  with 
  two 
  sensoria. 
  Costal 
  

   cell 
  about 
  eight 
  times 
  as 
  long 
  as 
  its 
  greatest 
  width 
  and 
  covered 
  on 
  its 
  distal 
  half 
  with 
  

   many 
  small 
  hairs. 
  Hairs 
  of 
  the 
  alar 
  disc 
  and 
  fringe 
  as 
  shown 
  in 
  fig. 
  1, 
  5 
  and 
  6 
  . 
  Hind 
  

   wings 
  (fig. 
  1, 
  5 
  ' 
  7 
  ) 
  a 
  little 
  longer 
  than 
  half 
  the 
  fore 
  wings 
  and 
  about 
  four 
  times 
  as 
  long 
  

   as 
  broad, 
  narrowing 
  considerably 
  at 
  their 
  distal 
  extremity, 
  where 
  they 
  become 
  abruptly 
  

   rounded. 
  The 
  neuration 
  becomes 
  indistinct 
  at 
  about 
  half 
  the 
  distance 
  between 
  the 
  

  

  * 
  Specimens 
  mounted 
  in 
  Canada 
  balsam. 
  For 
  names 
  of 
  colours 
  see 
  Saccardo 
  (P. 
  A.). 
  

   " 
  Chromotaxia." 
  Patavii, 
  1912. 
  

  

  