﻿70 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.67 
  

  

  distinctly 
  longer 
  than 
  the 
  first 
  and 
  second 
  combined 
  ; 
  abdomen 
  broad- 
  

   oval 
  ; 
  chitinized 
  plate 
  of 
  first 
  tergite 
  rugulose 
  laterally 
  and 
  at 
  apex 
  ; 
  

   second 
  tergite 
  broad, 
  usually 
  very 
  faintly 
  medially 
  emarginate 
  be- 
  

   hind, 
  granular, 
  and 
  usually 
  with 
  a 
  basal 
  median, 
  shining, 
  irregularly 
  

   rugose 
  area; 
  suturiform 
  articulation 
  rather 
  broad, 
  foveolate; 
  third 
  

   to 
  fifth 
  tergites, 
  and 
  sometimes 
  the 
  sixth 
  in 
  the 
  female, 
  granular 
  ; 
  ovi- 
  

   positor 
  sheaths 
  usually 
  about 
  equal 
  to 
  the 
  dorsum 
  of 
  the 
  abdomen 
  

   beyond 
  first 
  tergite 
  but 
  sometimes 
  apparently 
  as 
  long 
  as 
  the 
  abdomen. 
  

   Yellow, 
  more 
  or 
  less 
  marked 
  with 
  black 
  ; 
  sometimes 
  entirely 
  yellow 
  ; 
  

   but 
  more 
  frequently 
  with 
  a 
  spot 
  enclosing 
  ocelli, 
  occiput, 
  mesonotal 
  

   lobes, 
  propodeum, 
  pectus, 
  first 
  abdominal 
  tergite 
  and 
  a 
  basal 
  median 
  

   spot 
  on 
  second, 
  black 
  or 
  blackish 
  ; 
  face 
  always 
  yellow 
  ; 
  rarely 
  thorax 
  

   almost 
  entirely 
  black, 
  and 
  the 
  abdomen 
  largely 
  blackish 
  or 
  dusky 
  

   above; 
  wings 
  very 
  slightly 
  dusky; 
  legs, 
  including 
  all 
  coxae, 
  yellow, 
  

   the 
  posterior 
  tibiae 
  at 
  apex 
  and 
  all 
  the 
  tarsi 
  more 
  or 
  less 
  dusky. 
  A 
  

   study 
  of 
  the 
  types 
  of 
  variabilis 
  and 
  tortricicola 
  has 
  convinced 
  me 
  that 
  

   they 
  belong 
  to 
  the 
  same 
  species. 
  

  

  Distribution. 
  — 
  Canada, 
  Missouri, 
  Connecticut, 
  Pennsylvania, 
  Vir- 
  

   ginia, 
  West 
  Virginia. 
  

  

  Hosts. 
  — 
  Polychrosis 
  viteana 
  Clemens; 
  Conotrachelus 
  nenuphar 
  

   Herbst; 
  Tortricid 
  in 
  seeds 
  of 
  Ambrosia 
  (Ashmead) 
  ; 
  larva 
  in 
  seed- 
  

   pod 
  of 
  Oenothera 
  biennis; 
  Tachypterus 
  quadrigibbus 
  Say. 
  

  

  The 
  above 
  characterization 
  is 
  based 
  on 
  the 
  types, 
  and 
  on 
  a 
  large 
  

   quantity 
  of 
  material 
  in 
  the 
  National 
  Museum. 
  This 
  material 
  includes 
  

   extensive 
  series 
  reared 
  by 
  R. 
  A. 
  Cushman 
  from 
  Polychrosis 
  viteana 
  

   at 
  Northeast, 
  Pennsylvania, 
  under 
  Quaintance 
  Nos. 
  11058, 
  11070, 
  

   11432, 
  and 
  14462; 
  several 
  series 
  reared 
  from 
  Conotrachelus 
  nenuphar 
  

   by 
  the 
  same 
  investigator, 
  at 
  Vienna, 
  Virginia, 
  under 
  Quaintance 
  Nos. 
  

   7025, 
  7050, 
  and 
  7837; 
  also 
  several 
  specimens 
  obtained 
  by 
  Cushman 
  

   from 
  the 
  seed 
  pods 
  of 
  the 
  evening 
  primrose, 
  at 
  Vienna, 
  Virginia, 
  

   under 
  Quaintance 
  No. 
  7195 
  ; 
  and 
  a 
  single 
  female 
  reared 
  from 
  Tachyp- 
  

   terus 
  quadrigibbus 
  Say, 
  at 
  French 
  Creek, 
  Virginia, 
  by 
  F. 
  E. 
  Brooks, 
  

   under 
  Quaintance 
  No. 
  9505. 
  

  

  58. 
  MICROBRACON 
  SANNINOIDEAE 
  Gahan 
  

  

  Fig. 
  12 
  

   Micro'bracon 
  sanninoideae 
  Gahan, 
  Proc. 
  U. 
  S. 
  Nat. 
  Mus., 
  vol. 
  53, 
  1917, 
  p. 
  196. 
  

  

  Type.— 
  Cat. 
  No. 
  20374, 
  U.S.N.M. 
  

  

  Differs 
  from 
  mellitor, 
  to 
  which 
  it 
  is 
  quite 
  similar 
  in 
  general 
  ap- 
  

   pearance, 
  in 
  having 
  a 
  much 
  larger 
  opening 
  between 
  clypeus 
  and 
  

   mandibles; 
  in 
  the 
  shorter 
  malar 
  space; 
  in 
  the 
  second 
  abscissa 
  of 
  

   radius 
  being 
  more 
  than 
  twice 
  the 
  first, 
  and 
  the 
  third 
  longer 
  than 
  the 
  

   first 
  and 
  second 
  combined; 
  in 
  the 
  posterior 
  margin 
  of 
  the 
  second 
  

   tergite 
  being 
  straight, 
  and 
  in 
  the 
  tergites 
  beyond 
  the 
  second 
  being 
  

  

  