﻿WASPS 
  OF 
  GENUS 
  TRIMORUS 
  — 
  FOUTS 
  113 
  

  

  Echo 
  specimens 
  bear 
  the 
  dates 
  July 
  1926 
  and 
  August 
  12, 
  1916. 
  

   The 
  Mount 
  Holly 
  Springs 
  specimen 
  was 
  swept 
  from 
  wheat 
  stubble 
  

   on 
  May 
  17, 
  1920. 
  

  

  Variation. 
  — 
  One 
  of 
  the 
  two 
  females 
  from 
  Glen 
  Echo 
  is 
  1.84 
  mm. 
  

   long, 
  the 
  punctures 
  on 
  the 
  frons 
  are, 
  as 
  in 
  the 
  male, 
  few 
  and 
  incon- 
  

   spicuous, 
  and 
  the 
  sculpture 
  on 
  the 
  third 
  tergite 
  is 
  somewhat 
  finer 
  

   than 
  in 
  the 
  type. 
  

  

  (19) 
  TRIMORUS 
  ERYTHROGASTER. 
  new 
  species 
  

  

  Male. 
  — 
  Length 
  1.65 
  mm. 
  Head 
  2.1 
  times 
  as 
  wide 
  as 
  long, 
  a 
  little 
  

   wider 
  than 
  the 
  thorax, 
  as 
  wide 
  as 
  the 
  abdomen; 
  frons 
  striate 
  below 
  

   and 
  laterally 
  to 
  the 
  vertex, 
  with 
  a 
  few 
  small 
  scattered 
  punctures 
  above, 
  

   without 
  a 
  median 
  carina, 
  otherwise 
  smooth, 
  without 
  sculpture; 
  

   vertex 
  and 
  occiput 
  smooth, 
  unsculptured; 
  cheeks 
  with 
  a 
  few 
  fine 
  

   striae; 
  scape 
  nearly 
  twice 
  as 
  long 
  as 
  the 
  third 
  joint, 
  about 
  five 
  times 
  as 
  

   long 
  as 
  the 
  pedicel; 
  pedicel 
  as 
  wide 
  as 
  long, 
  a 
  little 
  thicker 
  than 
  third 
  

   joint; 
  third 
  joint 
  about 
  three 
  times 
  as 
  long 
  as 
  thick, 
  as 
  long 
  as 
  the 
  

   fourth, 
  fifth, 
  or 
  sixth, 
  ])ut 
  a 
  little 
  thicker 
  than 
  any 
  one 
  of 
  these 
  joints; 
  

   joints 
  beyond 
  the 
  sixth 
  missing; 
  thorax 
  1.1 
  times 
  as 
  long 
  as 
  wide, 
  

   convex 
  dorsally; 
  mesonotum 
  very 
  coarsely 
  and 
  thickly 
  punctate 
  

   anteriorly, 
  smoother 
  and 
  with 
  the 
  punctures 
  more 
  widely 
  separated 
  

   on 
  posterior 
  half; 
  along 
  the 
  posterior 
  margin 
  the 
  punctures 
  are 
  close 
  

   together 
  but 
  not 
  so 
  deep 
  as 
  those 
  on 
  the 
  front 
  half 
  of 
  the 
  mesonotum; 
  

   parapsidal 
  grooves 
  complete; 
  scutellum 
  smooth, 
  with 
  a 
  few 
  small 
  

   scattered 
  punctures; 
  metanotal 
  spine 
  very 
  sharp 
  at 
  apex, 
  broadened 
  

   basally, 
  about 
  half 
  as 
  long 
  as 
  the 
  scutellum; 
  wings 
  faintly 
  brownish, 
  

   extending 
  slightly 
  less 
  than 
  a 
  fourth 
  the 
  length 
  of 
  the 
  abdomen 
  past 
  

   the 
  latter's 
  apex; 
  abdomen 
  1.6 
  times 
  as 
  long 
  as 
  w^de, 
  broadly 
  rounded 
  

   posteriorly; 
  petiole 
  scarcely 
  longer 
  than 
  wide, 
  with 
  numerous 
  longi- 
  

   tudinal 
  ridges 
  its 
  entire 
  length, 
  with 
  a 
  broad 
  trough-shaped 
  depression 
  

   across 
  anterior 
  third; 
  second 
  tergite 
  1.45 
  times 
  as 
  wide 
  $.s 
  long, 
  as 
  

   long 
  as 
  the 
  petiole, 
  with 
  many 
  slightly 
  diverging 
  ridges 
  all 
  of 
  which 
  

   extend 
  to 
  posterior 
  fifth; 
  third 
  tergite 
  1.8 
  times 
  as 
  wide 
  as 
  long, 
  nearly 
  

   twice 
  as 
  long 
  as 
  the 
  second, 
  its 
  whole 
  surface 
  covered 
  with 
  small 
  

   punctures, 
  these 
  punctures 
  thicker 
  laterally; 
  head 
  black; 
  thorax 
  black 
  

   above, 
  reddish 
  laterally 
  and 
  below; 
  scape 
  reddish 
  brown, 
  a 
  little 
  

   darker 
  toward 
  apex; 
  petiole 
  and 
  second 
  tergite 
  reddish, 
  the 
  rest 
  of 
  

   the 
  abdomen 
  dark 
  reddish 
  brown; 
  legs 
  yelloAvish 
  brown. 
  

  

  Type 
  locality.- 
  — 
  Ai'lington, 
  Va. 
  

  

  r?/2;e.— 
  U.S.N.M. 
  No. 
  57784. 
  

  

  One 
  specimen 
  collected 
  by 
  the 
  author. 
  

  

  (20) 
  TRIMORUS 
  SULCATUS 
  (Kieffer) 
  

  

  Hoplogryon 
  sulcaius 
  Kieffer, 
  Ark. 
  Zool., 
  vol. 
  1, 
  p. 
  538, 
  1904 
  (male). 
  

   Trimorus 
  sulcatus, 
  Kieffer, 
  Das 
  Tierreich, 
  Lief. 
  48, 
  p. 
  179, 
  1926. 
  

   783388 
  — 
  48 
  A 
  

  

  