﻿art. 
  8 
  REVISION 
  OF 
  THE 
  GENUS 
  MICROBRACON 
  — 
  MUESEBECK 
  53 
  

  

  A 
  Uotype-locality. 
  — 
  Saugus, 
  Massachusetts. 
  

  

  Host. 
  — 
  Pissodes 
  strobi 
  Peck. 
  

  

  Described 
  from 
  8 
  female 
  and 
  4 
  male 
  specimens 
  reared 
  at 
  the 
  

   Gipsy 
  Moth 
  Laboratory, 
  Melrose 
  Highlands, 
  Massachusetts, 
  from 
  

   the 
  above-named 
  host, 
  by 
  J. 
  V. 
  Schaffner 
  under 
  Gipsy 
  Moth 
  Labo- 
  

   ratory 
  Nos. 
  12164 
  H 
  1-a, 
  and 
  12164 
  H 
  1-b. 
  There 
  are 
  several 
  addi- 
  

   tional 
  specimens 
  in 
  the 
  United 
  States 
  National 
  Museum, 
  reared 
  from 
  

   Pissodes 
  strobi 
  taken 
  at 
  Rainbow, 
  Windsor, 
  and 
  Portland, 
  Connecti- 
  

   cut, 
  by 
  S. 
  N. 
  Spring, 
  B. 
  H. 
  Walden 
  and 
  M. 
  P. 
  Zappe. 
  

  

  37. 
  MICROBRACON 
  SESIAE, 
  new 
  species 
  

   Figs. 
  8, 
  9 
  

  

  Very 
  similar 
  to 
  nevadensis, 
  but 
  distinguished 
  as 
  noted 
  in 
  the 
  table 
  

   to 
  species. 
  

  

  Female. 
  — 
  Length, 
  4 
  mm. 
  Head 
  thick 
  at 
  insertion 
  of 
  antennae; 
  

   face 
  short, 
  receding 
  below; 
  transverse 
  diameter 
  of 
  tfye 
  opening 
  be- 
  

   tween 
  clypeus 
  and 
  mandibles 
  considerably 
  greater 
  than 
  the 
  shortest 
  

   distance 
  from 
  the 
  opening 
  to 
  the 
  eyes, 
  and 
  nearly 
  as 
  long 
  as 
  the 
  

   distance 
  from 
  lower 
  margin 
  of 
  antennal 
  foramina 
  to 
  the 
  clypeus; 
  

   malar 
  space 
  shorter 
  than 
  first 
  segment 
  of 
  antennal 
  flagellum; 
  eyes 
  

   broad, 
  very 
  sparsely 
  hairy; 
  ocell-ocular 
  line 
  about 
  three 
  times 
  as 
  

   long 
  as 
  the 
  diameter 
  of 
  an 
  ocellus; 
  face 
  finely 
  punctate; 
  frons 
  

   very 
  faintly 
  punctate 
  just 
  above 
  antennae; 
  antennae 
  32-segmented 
  

   in 
  type, 
  stout, 
  most 
  of 
  the 
  flagellar 
  segments 
  only 
  a 
  little 
  longer 
  

   than 
  broad; 
  thorax 
  stout, 
  smooth 
  and 
  polished; 
  parapsidal 
  grooves 
  

   very 
  sparsely 
  hairy; 
  propodeum 
  smooth 
  and 
  polished, 
  with 
  a 
  short 
  

   stub 
  of 
  a 
  median 
  longitudinal 
  ridge 
  at 
  apex 
  and 
  a 
  few 
  short 
  lateral 
  

   ridges 
  diverging 
  from 
  this; 
  posterior 
  tibiae 
  and 
  tarsi 
  long, 
  the 
  

   third 
  segment 
  of 
  tarsi 
  about 
  as 
  long 
  as 
  the 
  fifth, 
  the 
  second 
  much 
  

   longer; 
  radius 
  attaining 
  wing 
  margin 
  distinctly 
  before 
  the 
  apex; 
  

   second 
  abscissa 
  of 
  radius 
  twice 
  as 
  long 
  as 
  the 
  first; 
  the 
  third 
  fully 
  

   as 
  long 
  as 
  the 
  first 
  and 
  second 
  combined 
  and 
  as 
  long 
  as 
  the 
  last 
  

   abscissa 
  of 
  cubitus 
  ; 
  the 
  latter 
  is 
  distinctly 
  longer 
  than 
  the 
  preceding 
  

   abscissa 
  of 
  cubitus, 
  the 
  third 
  cubital 
  cell 
  being 
  longer, 
  measured 
  

   along 
  the 
  cubitus, 
  than 
  the 
  second; 
  abdomen 
  long-oval; 
  the 
  chitin- 
  

   ized 
  plate 
  of 
  the 
  first 
  tergite 
  sculptured 
  laterally 
  and 
  along 
  the 
  

   apical 
  margin; 
  second 
  tergite 
  usually 
  mostly 
  finely 
  longitudinally 
  

   striate 
  with 
  a 
  more 
  or 
  less 
  triangular 
  median 
  embossed 
  area, 
  which 
  

   is 
  broadest 
  at 
  the 
  base 
  of 
  the 
  tergite; 
  third 
  tergite 
  nearly 
  always 
  

   finely 
  striate 
  toward 
  base; 
  remainder 
  of 
  dorsum 
  of 
  abdomen 
  smooth 
  

   and 
  polished; 
  ovipositor 
  sheaths 
  about 
  as 
  long 
  as 
  the 
  abdomen. 
  

   Head 
  black, 
  usually 
  with 
  poorly 
  defined 
  ferruginous 
  orbital 
  mark- 
  

   ings; 
  thorax 
  black, 
  usually 
  somewhat 
  marked 
  with 
  ferruginous, 
  

   especially 
  in 
  the 
  parapsidal 
  furrows 
  and 
  on 
  the 
  propleura; 
  wings 
  

  

  