﻿art. 
  S 
  REVISION 
  OF 
  THE 
  GENUS 
  MICROBRACON 
  MUESEBECK 
  35 
  

  

  hardly 
  one-third 
  the 
  second 
  abscissa 
  of 
  radius; 
  posterior 
  femora 
  

   stout, 
  about 
  three 
  times 
  as 
  long 
  as 
  broad; 
  first 
  abdominal 
  tergite 
  

   strongly 
  rugulose, 
  the 
  sculpture 
  occurring 
  on 
  the 
  middle 
  of 
  the 
  plate 
  

   as 
  well 
  as 
  laterally 
  ; 
  second 
  tergite 
  about 
  as 
  long 
  as 
  third, 
  granularly 
  

   rugulose, 
  its 
  posterior 
  margin 
  straight; 
  third 
  tergite 
  granular; 
  the 
  

   fourth 
  and 
  fifth 
  somewhat 
  granular 
  but 
  less 
  strongly 
  than 
  third; 
  

   ovipositor 
  sheaths 
  about 
  as 
  long 
  as 
  that 
  part 
  of 
  the 
  dorsum 
  of 
  ab- 
  

   domen 
  bej^ond 
  second 
  tergite. 
  Reddish 
  brown; 
  head 
  entirely 
  black; 
  

   mesonotal 
  lobes, 
  metanotum, 
  propodeum 
  and 
  pectus 
  blackish; 
  wings 
  

   entirely 
  a 
  little 
  fuscous; 
  legs 
  ferruginous, 
  the 
  apex 
  of 
  posterior 
  tibiae 
  

   and 
  the 
  posterior 
  tarsi 
  dusky; 
  abdomen 
  reddish-brown, 
  the 
  first 
  

   tergite 
  somewhat 
  infuscated. 
  

  

  Type.— 
  Cat 
  Xo. 
  26064, 
  U.S.N.M. 
  

  

  Type-locality. 
  — 
  Crowley, 
  Louisiana. 
  

  

  Described 
  from 
  a 
  single 
  specimen 
  labeled 
  "Parasite 
  of 
  Chilo 
  and 
  

   Diatraea, 
  Crowley, 
  La., 
  9-8-23, 
  J. 
  W. 
  Ingram." 
  

  

  15. 
  MICROBRACON 
  GASTROIDEAE 
  (Ashmead) 
  

  

  Fig. 
  1 
  

  

  Bracon 
  gastroideae 
  Ashmead, 
  Proc. 
  U. 
  S. 
  Nat. 
  Mus., 
  vol. 
  11, 
  18S9 
  (1888), 
  p. 
  617. 
  

  

  Type.— 
  Cat. 
  No. 
  2904, 
  U.S.N.M. 
  

  

  The 
  opening 
  betwen 
  clypeus 
  and 
  mandibles 
  is 
  enormous, 
  its 
  trans- 
  

   verse 
  diameter 
  being 
  greater 
  than 
  the 
  length 
  of 
  the 
  face 
  below 
  

   antennae; 
  female 
  antennae 
  usually 
  24 
  to 
  27-segmented, 
  the 
  basal 
  

   flagellar 
  segment 
  twice 
  as 
  long 
  as 
  broad, 
  all 
  the 
  following 
  somewhat 
  

   longer 
  than 
  broad; 
  thorax 
  smooth 
  and 
  polished; 
  parapsidal 
  grooves 
  

   very 
  sparsely 
  hairy 
  ; 
  propodeum 
  with 
  a 
  nearly 
  complete 
  median 
  lon- 
  

   gitudinal 
  carina, 
  otherwise 
  mostly 
  smooth 
  and 
  polished; 
  first 
  

   abscissa 
  of 
  radius 
  usually 
  not 
  more 
  than 
  half 
  the 
  first 
  intercubitus 
  

   and 
  less 
  than 
  half 
  the 
  second 
  abscissa 
  of 
  radius; 
  radial 
  cell 
  rather 
  

   short, 
  the 
  radius 
  attaining 
  wing 
  margin 
  distinctly 
  before 
  apex 
  of 
  

   wing; 
  tarsi 
  stout, 
  the 
  posterior 
  tarsi 
  shorter 
  than 
  their 
  tibiae, 
  in 
  

   the 
  female 
  much 
  shorter; 
  the 
  last 
  segment 
  of 
  posterior 
  tarsi 
  very 
  

   large, 
  broadening 
  strongly 
  toward 
  apex; 
  much 
  longer 
  than 
  the 
  

   second 
  segment 
  and 
  more 
  than 
  twice 
  the 
  fourth; 
  in 
  the 
  female 
  at 
  

   least, 
  and 
  usually 
  in 
  the 
  male, 
  the 
  posterior 
  tibiae 
  three 
  times 
  as 
  

   long 
  as 
  the 
  metatarsi; 
  abdomen 
  smooth 
  and 
  polished, 
  the 
  second 
  

   tergite 
  sometimes 
  a 
  little 
  longitudinally 
  sculptured 
  at 
  base; 
  ovi- 
  

   positor 
  sheaths 
  scarcely 
  as 
  long 
  as 
  the 
  first 
  abdominal 
  tergite. 
  Head 
  

   and 
  thorax 
  black; 
  wings 
  strongly 
  infuscated; 
  coxae 
  black; 
  usually 
  

   base 
  of 
  femora 
  and 
  more 
  or 
  less 
  of 
  tibiae 
  and 
  tarsi 
  blackish 
  or 
  

   fuscous; 
  abdomen 
  usually 
  red 
  with 
  first 
  tergite 
  and 
  a 
  median 
  spot 
  

   on 
  second 
  black, 
  altKough 
  sometimes 
  abdomen 
  is 
  entirely 
  black. 
  

  

  