﻿aet. 
  8 
  REVISION 
  OF 
  THE 
  GENUS 
  MICROBRACON 
  MUESEBECK 
  39 
  

  

  trifolii 
  (Cat. 
  No. 
  2916) 
  and 
  coleophorae 
  (Cat. 
  No. 
  18180) 
  are 
  in 
  the 
  

   United 
  States 
  National 
  Museum 
  ; 
  that 
  of 
  hansensis 
  is 
  in 
  the 
  Kansas 
  

   University 
  collection; 
  and 
  that 
  of 
  massasoit 
  is 
  in 
  the 
  collection 
  of 
  the 
  

   State 
  Agricultural 
  Experiment 
  Station, 
  at 
  New 
  Haven, 
  Connecticut. 
  

   Very 
  similar 
  to 
  the 
  preceding 
  as 
  pointed 
  out 
  in 
  the 
  discussion 
  un- 
  

   der 
  that 
  species; 
  but 
  the 
  characters 
  given 
  in 
  the 
  table 
  to 
  species 
  will 
  

   serve 
  to 
  distinguish 
  between 
  the 
  two. 
  

  

  Malar 
  space 
  in 
  the 
  female 
  as 
  long 
  as 
  the 
  transverse 
  diameter 
  of 
  

   the 
  opening 
  between 
  clypeus 
  and 
  mandibles; 
  frons 
  and 
  vertex 
  closely 
  

   punctate 
  and 
  opaque; 
  antennae 
  usually 
  24 
  to 
  29-segmented 
  ; 
  thorax 
  

   stout; 
  mesoscutum 
  with 
  long 
  and 
  rather 
  thick 
  pubescence 
  along 
  the 
  

   anterior 
  lateral 
  margins 
  and 
  in 
  the 
  parapsidal 
  grooves; 
  metapleura 
  

   thickly 
  pubescent 
  ; 
  propodeum 
  smooth 
  and 
  shining, 
  not 
  minutely 
  reti- 
  

   culate; 
  second 
  abscissa 
  of 
  radius 
  rarely 
  distinctly 
  twice 
  as 
  long 
  as 
  

   the 
  first 
  ; 
  posterior 
  tibiae 
  and 
  tarsi 
  slender 
  ; 
  plate 
  of 
  first 
  abdominal 
  

   tergite 
  usually 
  a 
  little 
  roughened 
  laterally 
  and 
  across 
  the 
  apex; 
  sec- 
  

   ond 
  tergite 
  usually 
  more 
  or 
  less 
  finely 
  granularly 
  sculptured, 
  with- 
  

   out 
  oblique 
  foveolate 
  furrows 
  medially 
  toward 
  base; 
  very 
  rarely 
  

   third 
  and 
  fourth 
  tergites 
  granular, 
  usually 
  smooth 
  and 
  shining; 
  ovi- 
  

   positor 
  sheaths 
  projecting 
  about 
  half 
  the 
  length 
  of 
  the 
  abdomen. 
  

   Head 
  black 
  with 
  contrasting 
  yellow 
  inner 
  orbital 
  lines; 
  thorax 
  

   mostly 
  black, 
  sometimes 
  ferruginous 
  behind 
  the 
  middle 
  lobe 
  of 
  meso- 
  

   scutum 
  and 
  on 
  the 
  scutellum 
  ; 
  wings 
  dusky 
  on 
  basal 
  two-thirds 
  ; 
  coxae 
  

   usually 
  black, 
  although 
  sometimes 
  mostly 
  testaceous 
  ; 
  posterior 
  tibiae 
  

   at 
  apex 
  and 
  their 
  tarsi 
  fuscous 
  ; 
  abdomen 
  often 
  mostly 
  reddish 
  testa- 
  

   ceous 
  with 
  the 
  first 
  tergite 
  and 
  the 
  apical 
  tergites 
  black, 
  but 
  this 
  is 
  

   variable, 
  the 
  entire 
  abdomen 
  sometimes 
  being 
  black. 
  

  

  Distribution. 
  — 
  Very 
  widely 
  distributed. 
  Occurs 
  from 
  Canada 
  to 
  

   Florida 
  and 
  westward 
  to 
  California. 
  

  

  Hosts. 
  — 
  Coleophora 
  leucochry 
  sella 
  Clemens 
  (Eohwer) 
  ; 
  C. 
  volckei 
  

   Heinrich; 
  and 
  various 
  undetermined 
  species 
  of 
  Coleophora. 
  

  

  In 
  addition 
  to 
  the 
  types 
  of 
  pygmaeus, 
  junci, 
  trifolii, 
  coleophorae, 
  

   and 
  massasoit, 
  I 
  have 
  seen 
  the 
  following 
  material: 
  In 
  the 
  National 
  

   Museum, 
  a 
  series 
  reared 
  from 
  Coleophora 
  volckei 
  at 
  Washington, 
  

   District 
  of 
  Columbia, 
  by 
  E. 
  E. 
  Selkregg, 
  under 
  Quaintance 
  No. 
  7890 
  ; 
  

   another 
  series 
  reared 
  from 
  the 
  same 
  host, 
  at 
  Watsonville, 
  California 
  

   by 
  W. 
  H. 
  Volck 
  ; 
  several 
  specimens 
  from 
  a 
  species 
  of 
  Coleophora 
  on 
  

   Amaranthus 
  at 
  Washington, 
  District 
  of 
  Columbia; 
  and 
  collected 
  

   specimens 
  from 
  Cedar 
  Point, 
  Maryland 
  ; 
  Jacksonville, 
  Florida 
  ; 
  Al- 
  

   gonquin, 
  Illinois; 
  Agricultural 
  College, 
  Maryland; 
  Onaga 
  and 
  Riley 
  

   Co., 
  Kansas; 
  Vienna, 
  Virginia 
  (E, 
  A. 
  Cushman) 
  ; 
  Ames, 
  Iowa 
  (C. 
  

   W. 
  Mally) 
  ; 
  Indiana; 
  Colorado. 
  The 
  Boston 
  Society 
  of 
  Natural 
  

   History 
  has 
  one 
  specimen 
  taken 
  by 
  C. 
  W. 
  Johnson 
  at 
  S. 
  W. 
  Harbor, 
  

  

  