﻿art. 
  8 
  EE 
  VISION 
  OF 
  THE 
  GENUS 
  MICROBRACON 
  MUESEBECK 
  11 
  

  

  25. 
  Second 
  and 
  third 
  abdominal 
  tergites 
  almost 
  entirely 
  minutely 
  granular; 
  

  

  propodeum 
  usually 
  with 
  a 
  nearly 
  complete 
  median 
  longitudinal 
  carina. 
  

  

  23. 
  meromyzae 
  (Gahan). 
  

  

  Third 
  and 
  following 
  abdominal 
  tergites 
  completely 
  smooth 
  and 
  polished; 
  

  

  second 
  tergite 
  only 
  with 
  faint 
  roughening 
  medially 
  26. 
  

  

  26. 
  Hypopygium 
  attaining 
  apex 
  of 
  abdomen; 
  ovipositor 
  sheaths 
  slender; 
  legs, 
  

  

  including 
  all 
  coxae, 
  and 
  the 
  abdomen 
  laterally 
  and 
  on 
  the 
  venter, 
  bright 
  

   yellow 
  ; 
  propodeum 
  smooth 
  and 
  polished 
  with 
  only 
  a 
  very 
  short 
  stub 
  of 
  a 
  

   median 
  ridge 
  posteriorly 
  ; 
  posterior 
  tarsi 
  slender. 
  

  

  24. 
  nigridorsum 
  (Aslnuead). 
  

  

  Hypopygium 
  not 
  distinctly 
  attaining 
  apex 
  of 
  last 
  dorsal 
  abdominal 
  segment 
  ; 
  

  

  ovipositor 
  sheaths 
  broad; 
  abdomen 
  usually 
  black; 
  posterior 
  tarsi 
  rather 
  

  

  stout, 
  the 
  last 
  tarsal 
  segment 
  as 
  long 
  as 
  the 
  second 
  and 
  more 
  than 
  half 
  

  

  the 
  metatarsus 
  27. 
  

  

  27. 
  All 
  coxae 
  and 
  more 
  or 
  less 
  of 
  the 
  femora 
  black 
  25. 
  ashmeadi, 
  new 
  name. 
  

  

  Legs 
  yellow, 
  the 
  posterior 
  coxae 
  blackish 
  at 
  base 
  26. 
  uncas 
  Viereck. 
  

  

  28. 
  Antennae 
  very 
  slender, 
  all 
  the 
  flagellar 
  segments 
  more 
  than 
  twice 
  as 
  long 
  as 
  

  

  thick 
  ; 
  legs 
  including 
  all 
  coxae 
  bright 
  yellow 
  ; 
  wings 
  perfectly 
  clear 
  hya- 
  

   line, 
  with 
  no 
  suggestion 
  of 
  duskiness 
  29. 
  

  

  Antennae 
  not 
  so 
  slender 
  ; 
  at 
  least 
  not 
  combining 
  the 
  above 
  characters 
  30. 
  

  

  29. 
  Ovipositor 
  sheaths 
  nearly 
  as 
  long 
  as 
  the 
  body; 
  abdomen 
  entirely 
  smooth 
  and 
  

  

  polished; 
  face 
  yellow; 
  thorax 
  and 
  abdomen 
  largely 
  yellowish. 
  

  

  27. 
  angelesius 
  (Provancher). 
  

  

  Ovipositor 
  sheaths 
  slightly 
  shorter 
  than 
  the 
  abdomen 
  ; 
  second 
  abdominal 
  

  

  tergite 
  finely 
  striate 
  ; 
  head, 
  including 
  face, 
  black 
  ; 
  thorax 
  and 
  abdomen 
  

  

  largely 
  black 
  2S. 
  auripes 
  (Provancher). 
  

  

  30. 
  Head 
  thin 
  antero-posteriorly, 
  the 
  face 
  rather 
  flat, 
  not 
  prominent 
  at 
  insertion 
  

  

  of 
  antennae 
  and 
  scarcely 
  receding 
  below; 
  propodeum 
  completely 
  smooth 
  

   and 
  polished, 
  without 
  a 
  stub 
  of 
  a 
  median 
  ridge 
  at 
  apex 
  ; 
  ovipositor 
  

   sheaths 
  at 
  least 
  a 
  little 
  longer 
  than 
  the 
  abdomen, 
  and 
  usually 
  fully 
  as 
  

  

  long 
  as 
  the 
  body; 
  antennae 
  normally 
  20 
  to 
  30-segmented 
  31. 
  

  

  Head 
  rather 
  thick 
  antero-posteriorly 
  at 
  insertion 
  of 
  antennae, 
  the 
  face 
  dis- 
  

   tinctly 
  receding 
  below 
  ; 
  propodeum 
  usually 
  with 
  a 
  stub 
  of 
  a 
  median 
  ridge 
  

   at 
  apex 
  ; 
  ovipositor 
  sheaths 
  at 
  most 
  a 
  little 
  longer 
  than 
  the 
  abdomen__ 
  34. 
  

  

  31. 
  Second 
  abdominal 
  tergite 
  with 
  conspicuous 
  membranous 
  or 
  weakly 
  

  

  chitinized 
  areas 
  laterally 
  opposite 
  the 
  broad 
  membranous 
  margins 
  of 
  the 
  

   first 
  tergite; 
  ovipositor 
  sheaths 
  as 
  long 
  as 
  the 
  body, 
  antennae 
  usually 
  

  

  20 
  to 
  26-segmented 
  32. 
  

  

  Second 
  abdominal 
  tergite 
  without 
  such 
  membranous 
  areas 
  laterally; 
  head 
  

   and 
  thorax 
  usually 
  black 
  or 
  blackish 
  ; 
  coxae 
  usually, 
  though 
  not 
  always, 
  

   black 
  or 
  brown 
  . 
  33. 
  

  

  32. 
  Head, 
  thorax, 
  abdomen, 
  legs, 
  mostly 
  yellow; 
  second 
  abdominal 
  tergite 
  

  

  usually 
  as 
  long 
  as 
  the 
  third 
  or 
  nearly 
  29. 
  rudbeckiae, 
  new 
  species. 
  

  

  Head 
  and 
  thorax 
  wholly 
  black 
  ; 
  abdomen 
  black 
  except 
  for 
  the 
  membranous 
  

   parts 
  of 
  first 
  and 
  second 
  tergites; 
  second 
  tergite 
  much 
  shorter 
  than 
  

   third 
  30. 
  tenuiceps, 
  new 
  species. 
  

  

  33. 
  Ovipositor 
  sheaths 
  as 
  long 
  as 
  the 
  body; 
  second 
  abdominal 
  tergite 
  more 
  or 
  

  

  less 
  sculptured 
  31. 
  nuperus 
  (Cresson). 
  

  

  Ovipositor 
  sheaths 
  slightly 
  longer 
  than 
  the 
  abdomen; 
  abdomen 
  completely 
  

   smooth 
  and 
  polished 
  32. 
  curtus 
  (Provancher). 
  

  

  