﻿150 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  ^®^- 
  ^<" 
  

  

  lobe 
  of 
  the 
  ninth 
  sternite, 
  the 
  aedeagus 
  is 
  broader 
  at 
  the 
  apex 
  and 
  

   only 
  slightly 
  notched 
  rather 
  than 
  deeply 
  cleft, 
  and 
  the 
  parameres 
  are 
  

   slender 
  and 
  nearly 
  straight 
  with 
  the 
  apices 
  abruptly 
  bent 
  and 
  scim- 
  

   itar-shaped. 
  

  

  Material 
  examined. 
  — 
  Brazil 
  : 
  Km. 
  47, 
  Estrada 
  Rio-Sao 
  Paulo, 
  Rio 
  de 
  

   Janeiro, 
  Brazil, 
  February 
  1945, 
  Wygodzinsky, 
  2 
  cfcf 
  , 
  2 
  99. 
  

  

  Remarks. 
  — 
  Monohelea 
  nigeriae 
  Ingram 
  and 
  Maciie, 
  1922, 
  known 
  

   from 
  the 
  female 
  from 
  West 
  Africa, 
  is 
  closely 
  related 
  to 
  M. 
  (M.) 
  stonei 
  

   and 
  to 
  M. 
  (M.) 
  muUilineata, 
  but 
  according 
  to 
  the 
  original 
  description, 
  

   the 
  tarsi 
  bear 
  ventral 
  spines, 
  as 
  in 
  the 
  tessellata 
  group, 
  and 
  the 
  sperma- 
  

   thecae 
  are 
  imequal 
  in 
  size. 
  

  

  11. 
  Monohelea 
  (Monohelea) 
  guianaef 
  new 
  species 
  

  

  Figure 
  19, 
  A; 
  

  

  Monohelea 
  muUilineata, 
  Macfie, 
  not 
  Lutz 
  (misidentification) 
  , 
  Proc. 
  Ent. 
  Soc. 
  

   London, 
  Ser. 
  B, 
  vol. 
  9, 
  p. 
  187, 
  1940 
  (c?, 
  British 
  Guiana). 
  

  

  Macfie 
  (1940) 
  has 
  given 
  as 
  satisfactory 
  a 
  description 
  of 
  this 
  insect 
  

   as 
  was 
  possible 
  from 
  the 
  single 
  male 
  specimen 
  available. 
  This 
  speci- 
  

   men 
  was 
  borrowed 
  from 
  the 
  British 
  Museum 
  for 
  study 
  and 
  externally 
  

   cannot 
  be 
  separated 
  from 
  either 
  M. 
  (M.) 
  muUilineata 
  (Lutz) 
  or 
  

   M. 
  (M.) 
  stonei, 
  new 
  species. 
  However 
  the 
  male 
  genitalia 
  are 
  quite 
  

   distinct 
  and 
  may 
  be 
  characterized 
  as 
  follows: 
  Ninth 
  sternite 
  very 
  

   short, 
  with 
  a 
  low 
  median 
  lobe 
  on 
  caudal 
  margin 
  fitting 
  against 
  base 
  of 
  

   aedeagus, 
  spiculose, 
  with 
  four 
  long 
  hairs 
  arising 
  from 
  tubercles 
  in 
  a 
  

   line 
  at 
  base 
  of 
  median 
  lobe; 
  nmth 
  sternite 
  very 
  narrow, 
  tapered 
  to 
  

   tip, 
  with 
  a 
  pair 
  of 
  short, 
  nipplelike 
  apieolateral 
  processes. 
  Basistyles 
  

   about 
  twice 
  as 
  long 
  as 
  broad; 
  dististyles 
  nearly 
  straight, 
  with 
  blimt, 
  

   scarcely 
  narrowed 
  apices. 
  Aedeagus 
  very 
  narrow, 
  about 
  2.5 
  times 
  as 
  

   long 
  as 
  broad 
  at 
  base, 
  the 
  anterior 
  arch 
  very 
  low, 
  apex 
  cleft 
  about 
  a 
  

   third 
  way 
  to 
  base, 
  with 
  a 
  pair 
  of 
  very 
  slender, 
  submedian 
  processes, 
  

   from 
  the 
  bases 
  of 
  which 
  a 
  pair 
  of 
  slender, 
  lateral 
  arms 
  curve 
  around 
  

   stems 
  of 
  parameres. 
  Parameres 
  broadly 
  joined 
  together 
  at 
  bases, 
  

   each 
  with 
  a 
  short 
  anterior 
  and 
  lateral 
  arm, 
  stems 
  slender, 
  apex 
  of 
  each 
  

   thickened 
  and 
  abruptly 
  bent 
  laterocephalad 
  in 
  a 
  broadly 
  rounded 
  

   lobe 
  about 
  half 
  as 
  long 
  as 
  dististyle. 
  

  

  Types. 
  — 
  Holotype, 
  cf, 
  British 
  Museum 
  (Natural 
  History) 
  collec- 
  

   tion, 
  Mazaruni, 
  British 
  Guiana, 
  Aug. 
  21, 
  1937, 
  second 
  growth 
  (low 
  

   forest), 
  Richards 
  and 
  Smart. 
  

  

  tessellata 
  — 
  group 
  

  

  Wings 
  with 
  three 
  large 
  dark 
  anterior 
  spots 
  and 
  irregular 
  posterior 
  

   infuscated 
  areas; 
  scutellum 
  often 
  with 
  middle 
  yellow; 
  hind 
  legs 
  swollen 
  

   and 
  black, 
  with 
  yellow 
  knees, 
  the 
  tarsi 
  short 
  and 
  with 
  strong 
  ventral 
  

  

  