﻿GENERIC 
  REVISION 
  OF 
  THE 
  OPIIIONINI 
  — 
  CUSHMAN 
  427 
  

  

  26. 
  Claw 
  of 
  hind 
  tarsus 
  with 
  poctcn 
  extending 
  beyond 
  apex 
  (pi. 
  55, 
  fig. 
  77); 
  

  

  mandible 
  gradually 
  narrowed 
  from 
  base 
  to 
  apex; 
  penultimate 
  hook 
  of 
  

   frenulum 
  usually 
  very 
  different 
  from 
  others 
  (pi. 
  5-1, 
  fig. 
  56c); 
  (abscissula 
  

   strongly 
  curved 
  basally 
  [pi. 
  54, 
  fig. 
  56b]; 
  a 
  hairless 
  area 
  below 
  stigma 
  but 
  

  

  no 
  well-defined 
  fenestra 
  (pi. 
  51, 
  fig. 
  56]) 
  26. 
  Spilophion 
  Cameron 
  

  

  Claw 
  of 
  hind 
  tarsus 
  normal 
  (pi. 
  55, 
  fig. 
  80); 
  mandible 
  usually 
  abruptly 
  

   narrowed 
  ; 
  penultimate 
  hook 
  of 
  frenulum 
  normal 
  27 
  

  

  27. 
  Stigma 
  broad 
  with 
  radius 
  near 
  middle, 
  basal 
  abscissa 
  of 
  radius 
  not 
  thickened; 
  

  

  no 
  fenestra 
  (pi. 
  54, 
  fig. 
  CO) 
  ; 
  abscissula 
  curved, 
  nervellus 
  broken 
  at 
  middle, 
  

  

  upper 
  ab.-^ci.-^sa 
  j)erpent!icular 
  27. 
  Abanchogastra 
  Perkins 
  

  

  Stigma 
  narrow 
  with 
  radius 
  near 
  base; 
  basal 
  abscissa 
  of 
  radius 
  more 
  or 
  less 
  

   thickened; 
  fenestra 
  distinct, 
  with 
  or 
  without 
  scleromes 
  (pi. 
  53, 
  fig. 
  52; 
  pi. 
  

   54, 
  figs. 
  61, 
  62; 
  pi. 
  55, 
  figs. 
  63-70); 
  abscissula 
  straight; 
  nervellus 
  broken 
  

   below 
  middle, 
  upper 
  abscissa 
  usually 
  inclivous. 
  28. 
  Enicospilus 
  Stephens 
  

  

  1. 
  Genus 
  THYREODON 
  BrulI6 
  

  

  Plate 
  49, 
  Figure 
  1; 
  Plate 
  51, 
  Figures 
  29. 
  32; 
  Plate 
  52, 
  Figures 
  38, 
  47; 
  

   Plate 
  53, 
  Figure 
  50; 
  Plate 
  55, 
  Figures 
  72, 
  84; 
  Plate 
  50, 
  Figure 
  86 
  

  

  Thyreodon 
  Brull6, 
  Histoire 
  naturelle 
  des 
  in.sectes, 
  Hym6nopt^rcs, 
  vol. 
  4, 
  p. 
  150, 
  

   pi. 
  42, 
  fig. 
  3, 
  1846. 
  — 
  SzfiPLiGETi, 
  in 
  Wytsmaa, 
  Genera 
  inscctorum, 
  fasc. 
  34, 
  

   p. 
  25, 
  1905.— 
  Hooker, 
  Trans. 
  Amer. 
  Ent. 
  Soc, 
  vol. 
  38, 
  p. 
  106, 
  1912.— 
  Mor- 
  

   let, 
  a 
  revision 
  of 
  the 
  Ichneumonidae 
  based 
  on 
  the 
  collection 
  in 
  the 
  British 
  

   Museum 
  (Natural 
  History), 
  pt. 
  1, 
  p. 
  7, 
  1912. 
  — 
  Enderlein, 
  Zool. 
  Anz., 
  vol. 
  

   39, 
  p. 
  626, 
  figs. 
  1-4, 
  6, 
  1912. 
  [Genotype: 
  Thyreodon 
  cyaneua 
  Brulld. 
  By 
  

   designation 
  of 
  Hooker, 
  1912.] 
  

  

  Oleler 
  Shestakov, 
  Konowia, 
  vol. 
  5, 
  p. 
  259, 
  1926. 
  [Genotype: 
  {Oleter 
  selenadion 
  

   Shostakov) 
  = 
  Thyreodon 
  lalicindua 
  Cresson.] 
  Monobasic. 
  

  

  A 
  genus 
  of 
  very 
  large 
  species, 
  exclusively 
  American 
  and 
  largely 
  

   tropical 
  in 
  distribution. 
  I 
  have 
  listed 
  above 
  only 
  the 
  more 
  significant 
  

   contributions 
  to 
  literature 
  on 
  the 
  genus. 
  

  

  Head 
  (pi. 
  51, 
  fig. 
  32): 
  Narrower 
  than 
  thorax; 
  temjiles 
  buccate 
  to 
  

   receding; 
  occipital 
  carina 
  usually 
  not 
  reaching 
  hypostomal 
  carina, 
  

   genae 
  broad 
  below; 
  eyes 
  rather 
  small, 
  moderately 
  emarginate 
  opposite 
  

   antennae; 
  malar 
  space 
  half 
  or 
  more 
  as 
  long 
  as 
  basal 
  width 
  of 
  mandible; 
  

   ocelli 
  very 
  small, 
  removed 
  from 
  the 
  eye.s 
  by 
  more 
  than 
  their 
  diameter; 
  

   frons 
  with 
  deep 
  antennal 
  scrobes 
  bounded 
  medially 
  by 
  a 
  prominent 
  

   interantcrmal 
  ridge 
  and 
  laterally 
  by 
  carinae 
  along 
  the 
  eyes, 
  the 
  

   carinac 
  usiially 
  turning 
  away 
  from 
  the 
  eye 
  margins 
  above 
  toward 
  the 
  

   lateral 
  ocelli; 
  face 
  moderatel}' 
  convex; 
  clyj)eus 
  not 
  distinctly 
  separated, 
  

   long, 
  pointed 
  at 
  apex 
  and 
  in 
  profile 
  with 
  apex 
  recurved, 
  foveae 
  very 
  

   large 
  and 
  deep; 
  labrum 
  concealed; 
  mandible 
  broad 
  and 
  short, 
  strong]}'' 
  

   narrowed 
  from 
  base 
  to 
  apex, 
  not 
  strongly 
  twisted, 
  teeth 
  subequal; 
  

   tropin 
  of 
  normal 
  length; 
  second 
  joint 
  of 
  maxillary 
  palpus 
  flat, 
  tri- 
  

   angular; 
  antenna 
  shorter 
  than 
  body, 
  rather 
  stout, 
  subsetiform, 
  scapo 
  

   very 
  short 
  and 
  squarely 
  truncate 
  at 
  apex. 
  

  

  Thorax: 
  Stout; 
  pronotum 
  with 
  a 
  deep 
  transverse 
  foveolate 
  furrow 
  

   dorsally, 
  bounded 
  posteriorly 
  by 
  a 
  high 
  ridge 
  and 
  anteriorly 
  by 
  the 
  

  

  