﻿PROCEEDINGS 
  OF 
  THE 
  UNITED 
  STATES 
  NATIONAL 
  MUSEUM 
  

  

  issuea 
  

  

  by 
  (he 
  

  

  SMITHSONIAN 
  INSTITUTION 
  

  

  U. 
  S. 
  NATIONAL 
  MUSEUM 
  

  

  Vol. 
  98 
  Washington: 
  1948 
  No. 
  3225 
  

  

  NEW 
  PEMPHILIDINE 
  WASPS 
  FROM 
  SOUTHERN 
  NIGERIA 
  

  

  By 
  V. 
  S. 
  L. 
  Pate 
  

  

  The 
  present 
  paper 
  is 
  a 
  report 
  on 
  a 
  small 
  but 
  very 
  interesting 
  col- 
  

   lection 
  of 
  pemphilidine 
  wasps 
  (family 
  Sphecidae) 
  made 
  by 
  J. 
  C. 
  Brid- 
  

   well 
  in 
  southern 
  Nigeria. 
  The 
  types 
  of 
  all 
  the 
  new 
  species 
  are 
  in 
  the 
  

   United 
  States 
  National 
  Museum. 
  

  

  Genus 
  ENCOPOGNATHUS 
  Kohl 
  

  

  This 
  widely 
  distributed 
  genus, 
  whicli 
  reaches 
  its 
  maximum 
  specific 
  

   differentiation 
  in 
  Africa, 
  is 
  represented 
  in 
  the 
  Ethiopian 
  Region 
  by 
  

   only 
  the 
  nominate 
  subgenus.^ 
  The 
  following 
  key 
  will 
  serve 
  to 
  separate 
  

   the 
  eight 
  known 
  species 
  : 
  

  

  KEY 
  TO 
  SPECIES 
  OF 
  THE 
  SUBGENUS 
  ENCOPOGNATHUS 
  

  

  1. 
  Postscntellum 
  armed 
  posteriorly 
  with 
  a 
  translucent 
  lamella, 
  or 
  bilobate; 
  abdo- 
  

  

  men 
  more 
  or 
  less 
  elongate. 
  {Brownei 
  group) 
  2 
  

  

  Postscntellum 
  simple, 
  unarmed 
  posteriorly 
  ; 
  abdomen 
  relatively 
  short 
  and 
  com- 
  

   pact. 
  (Braueri 
  group) 
  5 
  

  

  2. 
  Postscutellum 
  bilobate, 
  produced 
  backward 
  on 
  each 
  side 
  in 
  form 
  of 
  a 
  thick, 
  

  

  opaque, 
  trigonal 
  laminate 
  plate 
  (Southern 
  Rhodesia) 
  _chirindensis 
  (Arnold) 
  

  

  Postscutellum 
  furnished 
  with 
  a 
  translucent 
  lamella 
  around 
  posterior 
  and 
  

  

  lateral 
  margins 
  3 
  

  

  3. 
  Abdomen 
  with 
  first 
  three 
  tergites 
  coarsely 
  rugosopunctate, 
  fourth 
  and 
  fifth 
  

  

  tergites 
  more 
  sparsely 
  punctate; 
  postscutellum 
  yellow 
  (Kenya 
  to 
  Southern 
  

  

  Rhodesia) 
  brownei 
  (Turner) 
  

  

  Abdomen 
  with 
  first 
  three 
  tergites 
  impunctate; 
  postscutellum 
  black 
  4 
  

  

  4. 
  Abdomen 
  with 
  fourth 
  and 
  fifth 
  tergites 
  granular 
  to 
  finely 
  pustulate. 
  Females 
  

  

  with 
  only 
  middle 
  tibiae 
  yellow 
  ; 
  pygidium 
  yellow 
  at 
  base, 
  ferruginous 
  at 
  

   apex 
  (Belgian 
  Congo) 
  granulata 
  (Arnold) 
  

  

  iPate, 
  V. 
  S. 
  L., 
  On 
  the 
  taxonomy 
  of 
  the 
  genus 
  Encopognathus. 
  Lloydia 
  (Cincinnati), 
  

   vol. 
  6, 
  pp. 
  53-76, 
  1943. 
  

  

  788793—48 
  149 
  

  

  