﻿HELEID 
  MIDGES, 
  GENUS 
  STILOBEZZIA 
  — 
  WIRTH 
  79 
  

  

  Type. 
  — 
  In 
  collection 
  Illinois 
  Natural 
  History 
  Survey, 
  9, 
  Illinois, 
  

   Urbana. 
  

  

  Remarks. 
  — 
  Very 
  near 
  S. 
  (S.) 
  diver 
  sa 
  (Coquillett), 
  but 
  much 
  smaller, 
  

   the 
  abdomen 
  yellowish 
  rather 
  than 
  green, 
  and 
  fifth 
  tarsal 
  segment 
  of 
  

   female 
  without 
  ventral 
  batonnets. 
  

  

  13. 
  Stilobeszia 
  (Stilobezzia) 
  pruinosa 
  Wirth, 
  1952 
  

  

  Figure 
  12, 
  g 
  

  

  Stilobezzia 
  pruinosa 
  Wirth, 
  Univ. 
  California 
  Publ. 
  Ent., 
  vol. 
  9, 
  p. 
  203, 
  1952 
  (cf, 
  

   9 
  ; 
  California). 
  

  

  Description. 
  — 
  Female: 
  Length 
  1.0 
  mm. 
  Pruinose 
  brown, 
  with 
  

   broad, 
  short, 
  unmarked 
  wings 
  and 
  a 
  marked, 
  pruinose 
  gray 
  pattern 
  

   on 
  the 
  mesonotum; 
  legs 
  with 
  narrow 
  sub-basal 
  pale 
  rings 
  on 
  tibiae; 
  

   halteres 
  white. 
  Proportions 
  of 
  segments 
  of 
  hind 
  leg 
  as 
  in 
  table 
  1; 
  

   basitarsi 
  and 
  fifth 
  segment 
  without 
  ventral 
  spines. 
  Spermathecae 
  

   two, 
  slightly 
  unequal, 
  slightly 
  ovoid, 
  with 
  a 
  few 
  minute 
  perforations; 
  

   the 
  ducts 
  sclerotized 
  a 
  very 
  short 
  distance. 
  

  

  Male: 
  Ninth 
  sternite 
  transverse; 
  ninth 
  tergite 
  long 
  and 
  rounded 
  

   caudad 
  with 
  a 
  subapical 
  pair 
  of 
  low, 
  rounded, 
  setigerous 
  lobes. 
  Basi- 
  

   styles 
  tapered, 
  the 
  inner 
  margins 
  with 
  low 
  hump 
  bearing 
  a 
  few 
  setose 
  

   tubercles; 
  dististyles 
  very 
  stout, 
  with 
  blunt 
  apices. 
  Aedeagus 
  with 
  

   a 
  pair 
  of 
  small, 
  oblique, 
  sclerotized 
  bars. 
  Parameres 
  a 
  pair 
  of 
  highly 
  

   sclerotized, 
  heavy 
  plates; 
  basal 
  apodemes 
  winglike 
  and 
  bilobed; 
  

   inner 
  margins 
  of 
  stems 
  nearly 
  straight, 
  slightly 
  expanded 
  on 
  outer 
  

   sides 
  about 
  halfway 
  to 
  apices; 
  apices 
  abruptly 
  narrowed 
  and 
  bent 
  

   ventromesad 
  on 
  about 
  distal 
  fourth. 
  The 
  apices 
  of 
  the 
  parameres 
  

   are 
  somewhat 
  longer 
  in 
  the 
  Florida 
  specimens 
  figured 
  than 
  in 
  the 
  type 
  

   from 
  California. 
  

  

  Types. 
  — 
  USNM 
  59945, 
  holotype, 
  cf, 
  allotype, 
  California, 
  San 
  Luis 
  

   Obispo 
  County, 
  Arroyo 
  Seco 
  Ranger 
  Station. 
  

  

  Material 
  examined. 
  — 
  California: 
  AiToyo 
  Seco 
  Ranger 
  Station, 
  

   San 
  Luis 
  Obispo 
  County, 
  July 
  1, 
  1948, 
  Wirth, 
  3 
  cf 
  cf 
  (type, 
  2 
  para- 
  

   types), 
  1 
  9 
  (allotype); 
  Pollack 
  Pines, 
  Eldorado 
  County, 
  July 
  7, 
  1948, 
  

   Wirth, 
  1 
  cf 
  ; 
  Snowline 
  Camp, 
  Eldorado 
  County, 
  July 
  8, 
  1948, 
  Wirth, 
  

   1 
  (f 
  . 
  

  

  Florida: 
  Gainesville, 
  Alachua 
  County, 
  June 
  2, 
  1950, 
  Bidlingmayer 
  

   1 
  cf 
  , 
  1 
  9; 
  Grayton 
  Beach, 
  Walton 
  County, 
  May 
  10, 
  1949, 
  Butler, 
  1 
  9 
  

  

  14. 
  Stilobezzia 
  {Stilobezzia") 
  punctipes, 
  new 
  species 
  

  

  Figure 
  11, 
  d 
  

  

  Diagonostic 
  characters. 
  — 
  A 
  large, 
  yellowish 
  species 
  with 
  brown 
  

   thorax 
  and 
  brown-punctate 
  legs; 
  abdomen 
  with 
  narrow 
  segmental 
  

   dark 
  bands; 
  wings 
  with 
  two 
  small 
  black 
  spots. 
  

  

  