﻿70 
  

  

  22 
  (25) 
  Male 
  with 
  the 
  clypeus 
  whitish 
  or 
  yellow; 
  basal 
  abdominal 
  seg- 
  

   ment 
  not 
  extremely 
  coarsely 
  punctured 
  about 
  the 
  base 
  

   of 
  its 
  dorsal 
  surface 
  in 
  either 
  sex. 
  

  

  Middle 
  tibiae 
  without 
  a 
  calcar; 
  propodevim 
  with 
  the 
  posterior 
  

   concavity 
  only 
  finely 
  rugulose. 
  A^. 
  dilatatipes. 
  

  

  Middle 
  tibiae 
  with 
  a 
  calcar; 
  propodeum 
  with 
  the 
  concavity 
  

   rugose. 
  O. 
  kirhyi. 
  

  

  Male 
  with 
  the 
  ch'peus 
  black; 
  basal 
  abdominal 
  segment 
  in 
  both 
  

   sexes 
  extremely 
  coarsely 
  punctate 
  at 
  base. 
  O. 
  kauaiensis. 
  

  

  Second 
  ventral 
  segment 
  with 
  a 
  distinct 
  depression 
  behind 
  the 
  

   costae. 
  

  

  Basal 
  abdominal 
  segment 
  almost 
  evenly 
  cvirved 
  from 
  the 
  

   petiole 
  to 
  the 
  hind 
  margin, 
  when 
  seen 
  in 
  profile; 
  being 
  not 
  

   at 
  all 
  abrupt 
  in 
  front. 
  O. 
  eludens. 
  

  

  Basal 
  abdominal 
  segment 
  abrupt 
  in 
  front, 
  having 
  a 
  distinct 
  

   dorsal 
  and 
  anterior 
  face, 
  though 
  the 
  angle, 
  where 
  they 
  

   meet, 
  is 
  rounded 
  off. 
  

  

  Second 
  dorsal 
  segment, 
  seen 
  in 
  profile, 
  with 
  the 
  highest 
  point, 
  

   to 
  which 
  it 
  is 
  raised, 
  situated 
  near 
  the 
  middle 
  of 
  the 
  length 
  

   of 
  the 
  segment. 
  O. 
  homochromus. 
  

  

  Second 
  dorsal 
  segment 
  with 
  the 
  highest 
  point 
  far 
  before 
  the 
  

   middle 
  of 
  its 
  length. 
  

  

  Mesonotum 
  with 
  the 
  minute 
  interstitial 
  puncturation 
  distinct; 
  

   propodeum 
  rugose. 
  O. 
  caenosus. 
  

  

  ^lesonotum 
  with 
  the 
  minute 
  interstitial 
  puncturation 
  hardly 
  

   noticeable 
  ; 
  propodeum 
  smooth 
  but 
  with 
  shallow 
  punctures. 
  

  

  O. 
  leucozoiiias. 
  

  

  (iv) 
  DESCRIPTION 
  OF 
  SPECIES. 
  

  

  Odynerus 
  homoeophanes. 
  

  

  Black, 
  with 
  dull, 
  red 
  markings. 
  A 
  median 
  frontal 
  spot 
  and 
  one 
  on 
  

   the 
  posterior 
  margin 
  of 
  the 
  eyes, 
  a 
  line 
  in 
  the 
  emargination 
  of 
  the 
  latter, 
  

   markings 
  on 
  the 
  pronotum, 
  mesonotum, 
  scutellum, 
  post-scutellum, 
  

   mesopleura 
  and 
  sometimes 
  on 
  the 
  propodeum, 
  the 
  posterior 
  margins 
  of 
  

   from 
  three 
  to 
  five 
  abdominal 
  segments, 
  as 
  well 
  as 
  the 
  clypeus, 
  a 
  line 
  

   on 
  the 
  scape 
  of 
  the 
  antennae 
  and 
  the 
  front 
  tibiae 
  (more 
  or 
  less) 
  in 
  the 
  

   male, 
  dull 
  red. 
  Apex 
  of 
  clypeus 
  in 
  the 
  male 
  slightly 
  emarginate, 
  truncate 
  

   or 
  almost 
  so 
  in 
  the 
  female. 
  Head 
  and 
  face 
  very 
  densely 
  punctured. 
  

   Mesonotum 
  very 
  densely, 
  rugosely 
  punctate, 
  with 
  discal 
  red 
  lines 
  which 
  

   are 
  usually 
  connected 
  with 
  those 
  of 
  the 
  posterior 
  three-fourths 
  of 
  the 
  

   lateral 
  margin; 
  scutellum 
  and 
  post-scutellum 
  very 
  densely 
  punctured, 
  the 
  

   propodeum 
  rugose. 
  Basal 
  abdominal 
  segment 
  dull, 
  densely 
  punctured, 
  

   the 
  second 
  also 
  dull 
  and 
  punctured 
  all 
  over 
  though 
  more 
  coarsely 
  and 
  

   densely 
  towards 
  the 
  apex, 
  the 
  red 
  band 
  dilated 
  at 
  the 
  sides; 
  beneath, 
  the 
  

   costae 
  are 
  long 
  and 
  well 
  defined 
  and 
  the 
  segment 
  is 
  widely 
  flattened 
  or 
  

   faintly 
  depressed 
  bej^ond 
  the 
  apices 
  of 
  the 
  costae. 
  Wings 
  hyaline, 
  not 
  

   iridescent, 
  infuscate 
  basally 
  and 
  along 
  the 
  costa. 
  Length 
  9.5-13 
  mm.* 
  

  

  * 
  The 
  measurements 
  are 
  taken 
  from 
  the 
  front 
  of 
  the 
  head 
  to 
  the 
  apex 
  

   of 
  the 
  second 
  abdominal 
  segment. 
  

  

  