﻿art. 
  8 
  REVISION 
  OF 
  THE 
  GENUS 
  MICROBRACON 
  MUESEBECK 
  67 
  

  

  Jersey, 
  Virginia. 
  In 
  the 
  collection 
  of 
  the 
  Boston 
  Society 
  of 
  Natural 
  

   History 
  are 
  two 
  specimens 
  from 
  Woods 
  Hole 
  and 
  Horseneck 
  Beach, 
  

   Massachusetts, 
  collected 
  by 
  C. 
  W. 
  Johnson. 
  A 
  study 
  of 
  the 
  types 
  

   leaves 
  no 
  doubt 
  that 
  xanthostigmus, 
  vernoniae, 
  anthonomi, 
  and 
  

   pevibertoni 
  are 
  the 
  same 
  species. 
  The 
  allotype 
  of 
  vernoniae 
  is 
  

   nuperus, 
  as 
  stated 
  under 
  that 
  species. 
  

  

  54. 
  MICROBRACON 
  NIGROPECTUS 
  (Provancher) 
  

  

  Bracon 
  nigropectus 
  Provancher, 
  Natural. 
  Canad., 
  vol. 
  12, 
  1880, 
  p. 
  143. 
  

  

  Type. 
  — 
  In 
  the 
  Museum 
  of 
  Public 
  Instruction, 
  at 
  Quebec, 
  Canada. 
  

  

  Malar 
  space 
  about 
  as 
  long 
  as 
  the 
  first 
  segment 
  of 
  antennal 
  flagel- 
  

   lum; 
  face 
  and 
  frons 
  minutely 
  granular, 
  opaque; 
  antennae 
  of 
  type 
  

   missing 
  beyond 
  10th 
  segment; 
  the 
  flagellar 
  segments 
  beyond 
  second 
  

   but 
  little 
  longer 
  than 
  broad; 
  thorax 
  smooth 
  and 
  polished; 
  parap- 
  

   sidal 
  grooves 
  sparsely 
  hairy; 
  propodeum 
  is 
  mostly 
  finely 
  punctate, 
  

   and 
  is 
  provided 
  with 
  a 
  stub 
  of 
  a 
  median 
  longitudinal 
  ridge 
  pos- 
  

   teriorly, 
  with 
  some 
  short 
  ridges 
  diverging 
  from 
  this 
  stub; 
  second 
  

   abscissa 
  of 
  radius 
  not 
  quite 
  twice 
  as 
  long 
  as 
  the 
  first 
  ; 
  first 
  abdominal 
  

   tergite 
  sculptured 
  apically 
  and 
  laterally; 
  second 
  tergite 
  granular, 
  

   with 
  an 
  irregularly 
  rugose 
  basal 
  median 
  area; 
  third, 
  fourth, 
  fifth, 
  

   and 
  sixth 
  tergites 
  finely 
  granular; 
  ovipositor 
  sheaths 
  about 
  as 
  long 
  

   as 
  the 
  abdomen. 
  Head 
  yellow, 
  antennae 
  blackish; 
  thorax 
  yellow 
  

   except 
  propodeum 
  and 
  mesopectus, 
  which 
  are 
  blackish 
  ; 
  abdomen 
  yel- 
  

   low, 
  the 
  first 
  tergite 
  with 
  a 
  blackish 
  spot 
  and 
  third 
  and 
  fourth 
  

   tergites 
  weakly 
  infuscated 
  medially; 
  wings 
  nearly 
  hyaline; 
  legs, 
  

   including 
  coxae, 
  yellow. 
  

  

  Distribution. 
  — 
  Canada 
  ; 
  Vermont. 
  

  

  Host. 
  — 
  Unknown. 
  

  

  The 
  above 
  description 
  is 
  based 
  on 
  the 
  type. 
  The 
  only 
  other 
  speci- 
  

   men 
  which 
  I 
  have 
  seen 
  is 
  a 
  female 
  taken 
  at 
  Bennington, 
  Vermont, 
  by 
  

   C. 
  "W. 
  Johnson. 
  This 
  specimen, 
  which 
  is 
  in 
  the 
  collection 
  of 
  the 
  

   Boston 
  Society 
  of 
  Natural 
  History, 
  was 
  compared 
  with 
  the 
  type, 
  

   and 
  designated 
  a 
  homotype. 
  The 
  male 
  is 
  unknown. 
  

  

  55. 
  MICROBRACON 
  FURTIVUS 
  (Fyles) 
  

  

  Fig. 
  25 
  

  

  Bracon 
  furtivus 
  Fyles, 
  Can. 
  Ent., 
  vol. 
  24, 
  1892, 
  p. 
  34. 
  

  

  Bracon 
  fungicola 
  Ashmead, 
  Journ. 
  Cincinnati 
  Soc. 
  Nat. 
  Hist., 
  vol. 
  27, 
  1895, 
  

   p. 
  46. 
  

  

  Type. 
  — 
  The 
  types 
  of 
  both 
  species 
  are 
  in 
  the 
  United 
  States 
  Na- 
  

   tional 
  Museum, 
  furtivus 
  Cat. 
  No. 
  14762 
  and 
  fungicola 
  Cat. 
  No. 
  6864. 
  

  

  This 
  species 
  is 
  extremely 
  variable, 
  especially 
  in 
  color; 
  the 
  speci- 
  

   mens 
  of 
  some 
  series 
  are 
  entirely 
  or 
  almost 
  entirely 
  yellow; 
  those 
  

   of 
  other 
  series 
  are 
  mostly 
  black 
  ; 
  all 
  intergradations 
  occur. 
  The 
  an- 
  

  

  