﻿STRATIOMYIDAE 
  OF 
  SOLOMON 
  ISLANDS 
  — 
  JAMES 
  189 
  

  

  Ocellar 
  triangle 
  approximately 
  equilateral 
  ; 
  eyes 
  of 
  male 
  broadly 
  contiguous, 
  

   of 
  female 
  widely 
  separated 
  13 
  

  

  13. 
  Larger 
  species, 
  8 
  to 
  9 
  mm, 
  in 
  length 
  ; 
  abdomen 
  in 
  both 
  sexes 
  metallic 
  blue 
  or 
  

  

  green 
  ; 
  maximum 
  width 
  of 
  anal 
  ceil 
  but 
  little 
  greater 
  than 
  that 
  of 
  second 
  

   basal 
  cell, 
  distinctly 
  less 
  than 
  combined 
  width 
  of 
  two 
  basal 
  cells. 
  

  

  Cephalochrysa 
  chrysidiformis 
  (Lindner) 
  

   Smaller 
  species, 
  about 
  4 
  mm. 
  in 
  length; 
  abdomen 
  of 
  female 
  metallic 
  blue 
  

   or 
  green, 
  of 
  male 
  in 
  large 
  part 
  yellow 
  ; 
  maximum 
  width 
  of 
  anal 
  cell 
  equal 
  

   to 
  combined 
  width 
  of 
  two 
  basal 
  cells. 
  

  

  Microchrysa 
  flaviventris 
  (Wiedemann) 
  

  

  14. 
  Four 
  veins 
  arising 
  from 
  discal 
  cell; 
  that 
  is, 
  media 
  3-branched 
  15 
  

  

  Three 
  veins 
  arising 
  from 
  discal 
  cell; 
  that 
  is, 
  media 
  only 
  2-branched 
  

  

  (Pachygasterinae) 
  , 
  IS 
  

  

  15. 
  Terminal 
  segment 
  of 
  flagellum 
  elongated, 
  flattened, 
  vanelike; 
  the 
  preceding 
  

  

  two 
  or 
  three 
  segments 
  distinctly 
  furrowed 
  longitudinally 
  on 
  inner 
  surface 
  ; 
  

   abdomen 
  parallel-sided 
  on 
  intermediate 
  segments; 
  scutellum 
  unspined 
  

  

  (Hermetiinae) 
  16 
  

  

  Terminal 
  segment 
  of 
  flagellum 
  elongated 
  but 
  not 
  flattened 
  or 
  vanelike 
  ; 
  pre- 
  

   ceding 
  segments 
  cylindrical; 
  abdomen 
  oval 
  or 
  circular 
  in 
  dorsal 
  outline 
  

   (Clitellariinae) 
  17 
  

  

  16. 
  Eyes 
  bare 
  ; 
  mesonotum 
  wholly 
  black 
  ; 
  scutellum 
  at 
  most 
  pale-tipped 
  ; 
  second 
  

  

  abdominal 
  segment 
  with 
  a 
  pair 
  of 
  prominent 
  translucent 
  spots. 
  

  

  Hermetia 
  illucens 
  (Linnaeus) 
  

  

  Eyes 
  densely 
  short-pilose 
  ; 
  mesonotum 
  with 
  supraalar 
  calli 
  and 
  usually 
  with 
  

  

  a 
  spot 
  on 
  each 
  lateral 
  margin, 
  before 
  the 
  suture, 
  green 
  ; 
  scutellum 
  with 
  

  

  apex 
  broadly 
  green 
  ; 
  second 
  abdominal 
  segment 
  without 
  translucent 
  spots. 
  

  

  Hermetia 
  brunettii 
  Lindner 
  

  

  17. 
  Body 
  short; 
  abdomen 
  globular; 
  no 
  spines 
  on 
  scutellum 
  or 
  on 
  mesonotum 
  

  

  above 
  wing 
  bases 
  ; 
  orange-yellow 
  species 
  Ruba 
  tarsalis, 
  new 
  species 
  

  

  Body 
  elongated 
  ; 
  abdomen 
  ovoid 
  ; 
  a 
  pair 
  of 
  apical 
  spines 
  on 
  scutellum 
  and 
  an 
  

   erect 
  spine 
  on 
  mesonotum 
  above 
  each 
  wing 
  base. 
  

  

  Negritomyia 
  consobrina 
  (Bigot) 
  

  

  18. 
  Scutellum 
  prolonged 
  apically 
  into 
  a 
  long 
  digitate 
  process, 
  which 
  is 
  as 
  long 
  

  

  as 
  the 
  rest 
  of 
  the 
  scutellum 
  and 
  denticulate 
  laterally. 
  

  

  Monacanthomyia 
  becki, 
  new 
  species 
  

   Scutellum 
  rounded 
  posteriorly, 
  either 
  unarmed, 
  spined, 
  or 
  denticulate 
  api- 
  

   cally, 
  but 
  not 
  as 
  above 
  described 
  19 
  

  

  19. 
  Abdomen 
  short, 
  at 
  least 
  as 
  broad 
  as 
  long, 
  sometimes 
  inflated 
  20 
  

  

  Abdomen 
  distinctly 
  longer 
  than 
  broad, 
  at 
  most 
  inflated 
  basally 
  26 
  

  

  20. 
  Antennal 
  segments 
  5 
  to 
  7 
  each 
  with 
  a 
  long 
  slender, 
  pilose 
  process 
  on 
  the 
  

  

  inner 
  and 
  a 
  similar 
  one 
  on 
  the 
  outer 
  side; 
  segment 
  four 
  of 
  the 
  female, 
  in 
  

   addition 
  to 
  the 
  above, 
  with 
  a 
  similar 
  though 
  shorter 
  process 
  on 
  the 
  

  

  outer 
  side 
  21 
  

  

  Antennae 
  without 
  prominent 
  lateral 
  processes 
  22 
  

  

  21. 
  Wing 
  without 
  noticeable 
  yellow 
  microtrichia 
  ; 
  middle 
  basitarsus 
  usually 
  at 
  

  

  most 
  slightly 
  yellow; 
  broad 
  lateral 
  areas 
  of 
  iridescent 
  scales 
  on 
  mesono- 
  

   tum 
  interrupted 
  by 
  broad 
  lateral 
  extensions 
  of 
  the 
  dull-colored 
  median 
  

  

  stripe 
  in 
  the 
  male 
  only 
  Ptilocera 
  bergi, 
  new 
  species 
  

  

  Wings, 
  at 
  least 
  in 
  male, 
  with 
  a 
  cross 
  band 
  of 
  yellow 
  microtrichia 
  running 
  

   from 
  stigma 
  through 
  discal 
  cell; 
  middle 
  basitarsus 
  distinctly 
  yellow; 
  

   broad 
  lateral 
  area 
  of 
  iridescent 
  scales 
  on 
  mesonotum 
  interrupted 
  by 
  

   broad 
  lateral 
  extentions 
  of 
  the 
  dull-colored 
  median 
  stripe 
  in 
  male 
  and 
  

   female 
  alike 
  Ptilocera 
  bergi 
  fl.avescens, 
  new 
  subspecies 
  

  

  