﻿NEW 
  WASPS 
  FROM 
  SOUTHERN 
  NIGERIA 
  — 
  PATE 
  159 
  

  

  Mandibular 
  apices 
  bideutate, 
  the 
  inner 
  margins 
  with 
  a 
  large 
  tooth 
  ou 
  basal 
  

   third; 
  mesonotum 
  bisected 
  anteriorly 
  by 
  a 
  carinule; 
  front 
  with 
  a 
  single, 
  

   porrect, 
  spatulate 
  process; 
  cl.vpeus 
  quadridentate, 
  the 
  two 
  median 
  teeth 
  

   broad 
  and 
  obliquely 
  truncate 
  canalifera 
  (Arnold) 
  

  

  ARNOLDITA 
  PERARMATA 
  (Arnold) 
  

  

  Figure 
  16, 
  i, 
  I 
  

  

  Tlhyreopus] 
  (TracJieUodes) 
  perarmatus 
  Arnold, 
  Ann. 
  Transvaal 
  Mus., 
  vol. 
  11, 
  

   p. 
  349, 
  figs. 
  5, 
  5a-d, 
  1926 
  ( 
  9 
  ; 
  Moho, 
  near 
  Lesse, 
  Belgian 
  Congo, 
  Type 
  in 
  Congo 
  

   Museum, 
  Tervueren, 
  Belgium). 
  

  

  The 
  dentate 
  lower 
  margins 
  of 
  the 
  fore 
  femora 
  and 
  the 
  position 
  of 
  the 
  

   antennal 
  sockets 
  in 
  relation 
  to 
  the 
  nearest 
  lower 
  inner 
  orbits 
  distin- 
  

   guish 
  'perarmata 
  from 
  the 
  following 
  two 
  species. 
  

  

  I 
  have 
  examined 
  three 
  female 
  specimens 
  of 
  perarmata 
  in 
  the 
  collec- 
  

   tion 
  of 
  the 
  United 
  States 
  National 
  Museum, 
  taken 
  by 
  J. 
  C 
  Bridwell 
  

   between 
  Oloke-Meji 
  and 
  Ibadan, 
  Lagos, 
  southern 
  Nigeria. 
  

  

  ARNOLDITA 
  CANALIFERA 
  (Arnold) 
  

  

  FiGUKE 
  16, 
  d, 
  g 
  

  

  Orabro 
  [species-group 
  Tracheliodes] 
  canaliferus 
  Arnold, 
  Occ. 
  Pap. 
  Nat. 
  Mus. 
  

   Southern 
  Rhodesia, 
  vol. 
  2, 
  No. 
  2, 
  p. 
  28, 
  figs. 
  29, 
  29a-b 
  1944 
  ( 
  9 
  ; 
  Bulawayo, 
  

   Southern 
  Rhodesia. 
  Type 
  in 
  Stevenson 
  collection). 
  

  

  This 
  species 
  is 
  evidently 
  somewhat 
  intermediate 
  between 
  perarmata 
  

   and 
  senex. 
  Like 
  pera,nnata^ 
  the 
  front 
  of 
  canalifera 
  is 
  armed 
  with 
  a 
  

   spatulate 
  frontal 
  horn 
  but 
  the 
  simple 
  unarmed 
  fore 
  femora 
  readily 
  

   separate 
  it 
  from 
  that 
  species. 
  The 
  much 
  larger 
  size 
  and 
  differently 
  

   shaped 
  clypeus 
  distinguish 
  canalifera 
  at 
  once 
  from 
  both 
  seTiece 
  and 
  

   perarmata, 
  

  

  ARNOLDITA 
  SENEX 
  (Arnold) 
  

  

  Figure 
  16, 
  c, 
  c 
  

  

  T\}iyreopus\ 
  {Tracheliodes) 
  senex 
  Arnold, 
  Ann. 
  Transvaal 
  Mus., 
  vol. 
  11, 
  p. 
  350, 
  

   figs. 
  6, 
  6a, 
  1926 
  ( 
  S 
  ; 
  bred 
  from 
  abandoned 
  burrows 
  of 
  bostrychid 
  beetles 
  in 
  

   wooden 
  post 
  ; 
  Helenvale, 
  near 
  Bulawayo, 
  Southern 
  Rhodesia. 
  Type 
  in 
  National 
  

   Museum 
  of 
  Southern 
  Rhodesia). 
  

  

  Clrabro] 
  (species-group 
  Tracheliodes) 
  senex 
  Arnold, 
  Ann. 
  Transvaal 
  Mus., 
  vol. 
  

   20, 
  p. 
  137, 
  fig. 
  27, 
  1940 
  (Southern 
  Rhodesia 
  : 
  9 
  , 
  Lupane 
  ; 
  S 
  , 
  Khamis). 
  

  

  The 
  present 
  species 
  is 
  readily 
  distinguished 
  from 
  the 
  other 
  members 
  

   of 
  Amoldita 
  by 
  the 
  presence 
  of 
  two 
  frontal 
  horns 
  or 
  processes. 
  These 
  

   differ 
  in 
  the 
  sexes 
  : 
  in 
  the 
  female 
  the 
  upper 
  one 
  is 
  lamellif 
  orm 
  but 
  not 
  

   spatulate 
  in 
  dorsal 
  aspect 
  and 
  is 
  angularly 
  excised 
  at 
  base, 
  while 
  the 
  

   lower 
  one 
  is 
  subconical, 
  shorter, 
  and 
  less 
  porrect 
  than 
  that 
  of 
  the 
  male 
  ; 
  

   in 
  the 
  male 
  the 
  upper 
  process 
  is 
  spatulate 
  and 
  the 
  lower 
  one 
  strongly 
  

   compressed 
  on 
  the 
  lower 
  half. 
  The 
  mandibular 
  apices 
  of 
  the 
  male 
  are 
  

  

  