﻿WASPS 
  OF 
  GENUS 
  TRIMORUS 
  — 
  FOUTS 
  97 
  

  

  Maryland, 
  District 
  of 
  Columbia, 
  and 
  Texas. 
  T. 
  melanopus, 
  origi- 
  

   nally 
  described 
  from 
  Ontario, 
  has 
  recently 
  been 
  collected 
  in 
  British 
  

   Columbia. 
  No 
  species, 
  so 
  far 
  as 
  known, 
  occ\u"s 
  in 
  any 
  two 
  of 
  the 
  six 
  

   primary 
  zoogeographical 
  regions. 
  

  

  Alan 
  P. 
  Dodd, 
  Oscar 
  ^Vhittaker, 
  and 
  G. 
  E. 
  J. 
  NLxon 
  have 
  contributed 
  

   greatly 
  to 
  om- 
  knowledge 
  of 
  the 
  species 
  of 
  Australia, 
  of 
  British 
  

   Columbia, 
  and 
  of 
  South 
  Africa. 
  All 
  the 
  43 
  Australasian 
  species 
  of 
  

   Trimorus 
  have 
  been 
  described 
  by 
  Mr. 
  Dodd. 
  All 
  the 
  22 
  new 
  species 
  

   from 
  British 
  Columbia 
  are 
  described 
  from 
  material 
  collected 
  by 
  Mr. 
  

   Whittaker. 
  His 
  generosity 
  in 
  sending 
  this 
  material 
  to 
  the 
  author 
  for 
  

   study 
  has 
  made 
  possible 
  a 
  substantial 
  increase 
  in 
  our 
  knowledge 
  of 
  

   Nearctic 
  species. 
  All 
  but 
  one 
  of 
  the 
  28 
  Ethiopian 
  species 
  were 
  

   described 
  by 
  Mr. 
  NLxon. 
  

  

  The 
  key 
  presented 
  herewith 
  is 
  a 
  development 
  and 
  expansion 
  of 
  a 
  

   preliminary 
  one 
  prepared 
  by 
  the 
  author 
  in 
  1926. 
  This 
  included 
  all 
  

   Ashmead's 
  species 
  of 
  Hoplogryon, 
  some 
  of 
  Ashmead's 
  species 
  of 
  Prosa- 
  

   cantha, 
  Gahan's 
  Hoplogryon 
  kansasensis, 
  and 
  undescribed 
  species 
  in 
  

   the 
  author's 
  collection. 
  Several 
  of 
  Ashmead's 
  species 
  of 
  Prosacantha, 
  

   e. 
  g., 
  calif 
  ornica, 
  gracilicornis, 
  linellii, 
  macrocera,minutissima,schwarzii, 
  

   and 
  xanthognatka 
  and 
  all 
  species 
  described 
  by 
  Kieffer, 
  Brues, 
  and 
  

   Sanders, 
  were 
  not 
  included 
  in 
  the 
  original 
  key 
  and 
  are 
  now 
  placed, 
  or 
  

   their 
  approximate 
  positions 
  indicated, 
  solely 
  on 
  the 
  basis 
  of 
  the 
  lit- 
  

   erature 
  concerning 
  them. 
  Notes 
  made 
  by 
  the 
  author 
  on 
  the 
  type 
  mate- 
  

   rial 
  indicate 
  that 
  Prosacantha 
  americana 
  Ashmead 
  and 
  Hoplogryon 
  

   obscuripes 
  Ashmead 
  should 
  be 
  transferred 
  to 
  the 
  genera 
  Teleas 
  Latreille 
  

   and 
  Paragryon 
  Kieffer, 
  respectively. 
  

  

  KEY 
  TO 
  NEARCTIC 
  SPECIES 
  OF 
  TRIMORUS 
  

  

  1. 
  Wings 
  absent 
  or 
  abbreviated 
  2 
  

  

  Wings 
  normally 
  developed 
  17 
  

  

  2. 
  Wings 
  absent 
  (1) 
  apterus, 
  new 
  species 
  

  

  Wings 
  abbreviated 
  3 
  

  

  3. 
  Wings 
  extending 
  to 
  or 
  past 
  apex 
  of 
  petiole 
  4 
  

  

  Wings 
  not 
  extending 
  past 
  apex 
  of 
  propodeum 
  8 
  

  

  4. 
  Petiole 
  black, 
  elevated 
  anteriorly; 
  third 
  tergite 
  strongly 
  reticulate. 
  

  

  (2) 
  utahensis 
  (Ashmead) 
  

   Petiole 
  black 
  or 
  reddish, 
  not 
  elevated 
  anteriorly 
  5 
  

  

  5. 
  Body 
  and 
  antennae 
  entirely 
  black; 
  third 
  tergite 
  smooth, 
  without 
  sculpture. 
  

  

  (3) 
  formosus, 
  new 
  species 
  

  

  Petiole 
  reddish; 
  third 
  tergite 
  reticulate, 
  if 
  punctate 
  then 
  with 
  striae 
  

  

  basally 
  6 
  

  

  6. 
  Thorax 
  mostly 
  reddish; 
  proximal 
  four 
  antennal 
  joints 
  and 
  legs 
  yellow 
  7 
  

  

  Thorax 
  black 
  or 
  very 
  dark 
  brown; 
  antennae 
  black 
  or 
  dark 
  brown, 
  scape 
  brown- 
  

   ish 
  basally; 
  legs 
  yellow 
  to 
  light 
  brown 
  (4) 
  bruesi 
  (Kieffer) 
  

  

  7. 
  Wings 
  extending 
  to 
  apex 
  of 
  petiole, 
  ciliated; 
  mesonotum 
  strongly 
  punctate, 
  

  

  punctures 
  almost 
  confluent; 
  third 
  tergite 
  smooth, 
  with 
  a 
  few 
  scattered 
  

  

  punctures; 
  mandibles 
  with 
  two 
  long, 
  equal 
  teeth 
  (5) 
  grandis 
  (Brues) 
  

  

  783388—48 
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