﻿HELEID 
  MIDGES, 
  GENUS 
  MONOHELEA 
  — 
  WIRTH 
  151 
  

  

  spines; 
  claw 
  of 
  hind 
  leg 
  of 
  male 
  long 
  and 
  single 
  as 
  in 
  the 
  female; 
  male 
  

   aedeagus 
  with 
  slender, 
  pointed, 
  posterior 
  sclerite 
  borne 
  in 
  a 
  notch 
  in 
  

   the 
  quadrate 
  basal 
  sclerite, 
  parameres 
  short, 
  curved, 
  and 
  pointed. 
  

  

  12. 
  Monohelea 
  {Monohelea) 
  nebulosa 
  (Coquillett), 
  1901 
  

  

  Figures 
  18,/; 
  19, 
  c 
  

  

  Ceratopogon 
  nebulosus 
  Coquillett, 
  Proc. 
  U. 
  S. 
  Nat. 
  Mus., 
  vol. 
  23, 
  p. 
  606, 
  1901 
  

  

  (cf, 
  New 
  Jersey). 
  

   Ceratolophus 
  nebulosus, 
  Kieffer, 
  Genera 
  insectorum, 
  fasc. 
  42, 
  p. 
  60, 
  1906. 
  

   Johannseniella 
  nebulosa, 
  Malloch, 
  Bull. 
  Illinois 
  State 
  Lab. 
  Nat. 
  Hist., 
  vol. 
  10, 
  

  

  p. 
  226, 
  1914. 
  

   Hartornyia 
  nebulosa, 
  Malloch, 
  Bull. 
  Illinois 
  State 
  Lab. 
  Nat. 
  Hist., 
  vol. 
  10, 
  p. 
  340, 
  

  

  1915 
  (Indiana). 
  

   Monohelea 
  nebulosa, 
  KieflFer, 
  Ann. 
  Mus. 
  Nat. 
  Hungarici, 
  vol. 
  15, 
  p. 
  312, 
  1917. 
  — 
  

  

  Johannsen, 
  Ann. 
  Ent. 
  Soc. 
  Amer., 
  vol. 
  36, 
  p. 
  781, 
  1943 
  (Massachusetts, 
  

  

  Idaho) 
  . 
  

  

  Description. 
  — 
  Female: 
  Length 
  2.1 
  mm., 
  wing 
  1.7 
  mm. 
  by 
  0.6 
  mm. 
  

   Head 
  dull, 
  dark 
  brown, 
  with 
  a 
  few 
  pruinose 
  gray 
  spots 
  on 
  vertex; 
  

   antennae 
  light 
  brown, 
  distal 
  segments 
  not 
  darker. 
  Palpi 
  light 
  brown. 
  

  

  Mesonotum 
  pruinose 
  gray, 
  with 
  scattered, 
  small, 
  dark-brown 
  dots, 
  

   each 
  mesonotal 
  hair 
  arising 
  from 
  a 
  dot, 
  these 
  dots 
  more 
  or 
  less 
  con- 
  

   fluent, 
  especially 
  on 
  posterior 
  portion 
  of 
  mesonotum. 
  Scutellum 
  

   brown, 
  middle 
  third 
  yellow, 
  with 
  about 
  eight 
  marginal 
  bristles. 
  

   Postscutellum 
  and 
  plem-a 
  dark 
  brown. 
  Legs 
  shining 
  dark 
  brown, 
  

   knees 
  and 
  tarsi 
  yellowish. 
  Posterior 
  femora 
  and 
  tibiae 
  greatly 
  

   thickened; 
  hind 
  basitarsus 
  with 
  basal 
  and 
  distal 
  spine; 
  second 
  segment 
  

   with 
  two 
  distal 
  spines, 
  third 
  segment 
  with 
  one 
  distal 
  spine; 
  claws 
  

   minute 
  and 
  equal 
  on 
  forelegs 
  and 
  midlegs, 
  outer 
  claw 
  very 
  long, 
  

   four 
  times 
  the 
  length 
  of 
  inner, 
  on 
  hind 
  legs. 
  Proportions 
  of 
  segments 
  

   of 
  hind 
  leg 
  as 
  in 
  table 
  1. 
  

  

  Wing 
  grayish 
  hyaline, 
  a 
  quadrate 
  black 
  patch 
  across 
  first 
  basal 
  cell 
  

   at 
  half 
  its 
  length; 
  two 
  broad, 
  irregular, 
  more 
  or 
  less 
  interconnected, 
  

   transverse 
  bands 
  across 
  wing, 
  the 
  first 
  at 
  first 
  radial 
  cell, 
  the 
  second 
  at 
  

   apex 
  of 
  second 
  ; 
  cell 
  Rs 
  thus 
  with 
  a 
  dark, 
  a 
  light, 
  a 
  dark 
  and 
  a 
  light 
  band, 
  

   all 
  of 
  subequal 
  breadth. 
  First 
  radial 
  cell 
  0.4 
  times 
  as 
  long 
  as 
  second. 
  

   Halteres 
  pale 
  yellow. 
  

  

  Abdomen 
  uniform, 
  pruinose, 
  dark 
  brown; 
  anal 
  segment 
  yellow. 
  

  

  Male: 
  Ninth 
  sternite 
  transverse, 
  without 
  caudal 
  lobe, 
  posterior 
  

   portion 
  spiculate; 
  ninth 
  tergite 
  very 
  narrow, 
  with 
  sides 
  subparallel 
  on 
  

   distal 
  half, 
  apicolateral 
  processes 
  short 
  and 
  rounded. 
  Basistyles 
  very 
  

   stout 
  and 
  convex; 
  dististyles 
  slender 
  and 
  curved, 
  0.6 
  as 
  long 
  as 
  basi- 
  

   styles. 
  Aedeagus 
  with 
  two 
  sections, 
  basal 
  part 
  about 
  as 
  broad 
  as 
  long, 
  

   anterior 
  margin 
  contiguous 
  with 
  sternite, 
  posterior 
  margin 
  deeply 
  

   emarginate, 
  the 
  slender, 
  rodlike, 
  distal 
  sclerite 
  with 
  notched 
  apex 
  fit- 
  

  

  