﻿aet. 
  8 
  REVISION 
  OF 
  THE 
  GENUS 
  MICROBRACON 
  MUESEBECK 
  47 
  

  

  Described 
  from 
  a 
  fine 
  single 
  specimen 
  taken 
  by 
  W. 
  J. 
  Schoene 
  in 
  

   connection 
  with 
  studies 
  of 
  the 
  clover 
  weevil, 
  Phytonomus 
  nigrirostris. 
  

   C. 
  W. 
  Johnson, 
  of 
  the 
  Boston 
  Society 
  of 
  Natural 
  History, 
  has 
  several 
  

   fine 
  specimens 
  of 
  this 
  striking 
  species, 
  which 
  were 
  collected 
  by 
  him 
  

   at 
  Bar 
  Harbor, 
  Southwest 
  Harbor, 
  Salisbury 
  Cove, 
  and 
  Mount 
  

   Desert, 
  Maine; 
  one 
  small 
  female 
  in 
  this 
  collection 
  has 
  only 
  18 
  seg- 
  

   ments 
  in 
  the 
  antennae. 
  

  

  31. 
  MICROBRACON 
  NUPERUS 
  (Cresson) 
  

  

  Bracon 
  nuperus 
  Cresson, 
  Trans. 
  Amer. 
  Ent. 
  Soc, 
  vol. 
  4, 
  1872, 
  p. 
  187, 
  line 
  20. 
  

   Bracon 
  minimus 
  Cresson, 
  Trans. 
  Amer, 
  Ent. 
  Soc, 
  vol. 
  4, 
  1872, 
  p. 
  187, 
  line 
  31. 
  

   Bracon 
  politus 
  Provancher, 
  Addit. 
  faun. 
  Canad. 
  Hymen., 
  18S8, 
  p. 
  373. 
  

   Microbracon 
  (Bracon) 
  nuperus 
  Pierce, 
  U. 
  S. 
  D. 
  A., 
  Bur. 
  Ent. 
  Bull. 
  63, 
  1909, 
  

   p. 
  44. 
  

  

  Type. 
  — 
  No. 
  1686, 
  Philadelphia 
  Academy 
  of 
  Sciences, 
  Philadelphia, 
  

   Pennsylvania. 
  The 
  types 
  of 
  minimus 
  (Cat. 
  No. 
  1613, 
  allotype; 
  holo- 
  

   type 
  lost) 
  and 
  politus 
  (Cat. 
  No. 
  19G9) 
  are 
  in 
  the 
  United 
  States 
  

   National 
  Museum. 
  The 
  allotype 
  of 
  vernoniae 
  Ashmead, 
  which 
  also 
  

   belongs 
  here, 
  is 
  likewise 
  in 
  the 
  National 
  Museum. 
  

  

  Resembles 
  tenuiceps 
  in 
  the 
  general 
  conformation 
  of 
  the 
  head, 
  in 
  

   the 
  polished 
  frons, 
  completely 
  polished 
  propodeum, 
  in 
  the 
  dusky 
  

   wings 
  and 
  the 
  long 
  ovipositor, 
  but 
  can 
  be 
  readily 
  separated. 
  It 
  is 
  

   very 
  closely 
  allied 
  to 
  curtus, 
  and 
  some 
  males 
  can 
  probably 
  be 
  dis- 
  

   tinguished 
  only 
  with 
  great 
  difficulty 
  ; 
  the 
  female 
  differs 
  in 
  the 
  longer 
  

   ovipositor. 
  

  

  Head 
  thin, 
  the 
  face 
  but 
  slightly 
  receding; 
  eyes 
  shorter 
  than 
  in 
  

   tenuiceps; 
  transverse 
  diameter 
  of 
  the 
  opening 
  between 
  clypeus 
  and 
  

   mandibles 
  not 
  distinctly 
  one 
  and 
  one-half 
  times 
  the 
  length 
  of 
  the 
  

   malar 
  space 
  in 
  either 
  sex; 
  ocell-ocular 
  line 
  at 
  least 
  three 
  times 
  the 
  

   diameter 
  of 
  an 
  ocellus; 
  antennae 
  usually 
  21 
  to 
  30 
  segmented, 
  the 
  

   number 
  varying 
  with 
  the 
  size 
  of 
  the 
  insect 
  ; 
  thorax, 
  with 
  propodeum, 
  

   entirely 
  highly 
  polished; 
  second 
  abscissa 
  of 
  radius 
  about 
  twice 
  the 
  

   first; 
  the 
  third 
  longer 
  than 
  the 
  first 
  and 
  second 
  combined; 
  radius 
  

   attaining 
  wing 
  margin 
  before 
  the 
  apex 
  ; 
  last 
  abscissa 
  of 
  cubitus 
  longer 
  

   than 
  the 
  preceding 
  abscissa; 
  plate 
  of 
  first 
  abdominal 
  tergite 
  rather 
  

   broad 
  posteriorly, 
  smooth 
  and 
  polished, 
  sometimes 
  more 
  or 
  less 
  

   punctate 
  along 
  apical 
  margin 
  ; 
  second 
  tergite 
  usually 
  with 
  a 
  polished 
  

   elevation 
  medially 
  at 
  base, 
  and 
  more 
  or 
  less 
  rugulose 
  on 
  the 
  basal 
  

   two-thirds; 
  suturiform 
  articulation 
  usually 
  slightly 
  arcuate 
  medi- 
  

   ally 
  and 
  finely 
  foveolate; 
  second 
  tergite 
  as 
  long 
  as 
  the 
  third; 
  third 
  

   and 
  following 
  completely 
  polished 
  ; 
  ovipositor 
  sheaths 
  as 
  long 
  as 
  the 
  

   body. 
  Head 
  black, 
  rarely 
  with 
  poorly 
  defined 
  ferruginous 
  inner 
  

   orbital 
  markings; 
  thorax 
  wholly 
  black, 
  although 
  rarely 
  with 
  some 
  

   ferruginous 
  or 
  testaceous 
  markings; 
  wings 
  strongly 
  infuscated 
  on 
  

  

  