﻿178 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.88 
  

  

  pertinent 
  structural 
  characters 
  of 
  both 
  the 
  cephalic 
  process 
  and 
  the 
  

   genitalia 
  defy 
  description. 
  The 
  median 
  notch 
  in 
  the 
  caudal 
  margin 
  

   of 
  the 
  pronotum 
  and 
  the 
  furcation 
  of 
  the 
  median 
  carina 
  around 
  this 
  

   notch 
  also 
  furnish 
  constant 
  specific 
  characters. 
  In 
  final 
  analysis 
  the 
  

   male 
  aedeagus, 
  first 
  illustrated 
  by 
  Metcalf, 
  is 
  of 
  excellent 
  value 
  for 
  

   identification 
  purposes, 
  but 
  it 
  must 
  be 
  remembered 
  that 
  the 
  aedeagi 
  

   in 
  the 
  Fulgoridae 
  are 
  inflatable 
  and 
  that 
  they 
  present 
  a 
  very 
  different 
  

   appearance 
  when 
  inflated 
  than 
  when 
  deflated. 
  The 
  females 
  possess 
  

   good 
  genital 
  characters 
  in 
  that 
  parts 
  of 
  the 
  first 
  valvulae 
  are 
  heavily 
  

   sclerotized 
  and 
  ornate 
  with 
  spurs 
  and 
  ridges. 
  Although 
  these 
  valvulae 
  

   are 
  not 
  radically 
  differentiated 
  among 
  the 
  species, 
  they 
  are 
  relatively 
  

   constant 
  wfthin 
  each 
  species, 
  and 
  a 
  comparison 
  of 
  the 
  accompanying 
  

   drawings 
  will 
  readily 
  demonstrate 
  their 
  specific 
  value. 
  

  

  The 
  purpose 
  of 
  this 
  paper 
  is 
  to 
  present 
  the 
  more 
  pertinent 
  structiu'al 
  

   characters 
  of 
  the 
  genus, 
  together 
  with 
  characters 
  of 
  color 
  and 
  pattern, 
  

   in 
  the 
  hope 
  that 
  some 
  of 
  the 
  present 
  confusion 
  may 
  be 
  cleared 
  up 
  and 
  

   that 
  recognition 
  of 
  the 
  species 
  may 
  be 
  made 
  a 
  much 
  easier 
  task. 
  

  

  Because 
  four 
  undescribed 
  species 
  are 
  added 
  here, 
  and 
  because 
  

   notatus 
  Lallemand 
  is 
  not 
  included 
  in 
  any 
  existing 
  key, 
  a 
  revision 
  of 
  

   the 
  key 
  is 
  presented 
  here. 
  Unfortunately, 
  xanthoptei^A 
  Schmidt^ 
  

   and 
  notatus 
  Lallemand 
  * 
  are 
  known 
  to 
  the 
  writer 
  by 
  their 
  descriptions 
  

   only. 
  The 
  order 
  in 
  which 
  the 
  species 
  are 
  discussed 
  follows 
  a 
  tentative 
  

   phylogenetic 
  arrangement. 
  

  

  ARTIFICIAL 
  KEY 
  TO 
  THE 
  KNOWN 
  SPECIES 
  OF 
  PHRICTUS 
  

  

  1. 
  Cephalic 
  process 
  flattened 
  apically, 
  transversely 
  arcuate, 
  lacking 
  definite 
  

  

  apical 
  teeth 
  auromaculatus 
  Distant 
  

  

  Cephalic 
  process 
  with 
  5 
  apical 
  teeth 
  quinquepartitus 
  Distant 
  

  

  Cephalic 
  process 
  with 
  3 
  apical 
  teeth 
  2 
  

  

  2. 
  Hind 
  wings 
  with 
  large 
  hyaline 
  apical 
  spots 
  ocellatus 
  Signoret 
  

  

  Hind 
  wings 
  without 
  hyaline 
  apical 
  spots, 
  but 
  small 
  pruinose 
  areas 
  some- 
  

   times 
  present 
  3 
  

  

  3. 
  Elytra 
  scarlet, 
  continuous 
  broad 
  yellow 
  transverse 
  fasciae 
  present. 
  

  

  tripartitus 
  Metcalf 
  

   Elytra 
  some 
  shade 
  of 
  green 
  or 
  brown, 
  transverse 
  fasciae 
  if 
  present 
  inter- 
  

   rupted 
  medianly 
  4 
  

  

  4. 
  Basal 
  area 
  of 
  hind 
  wing 
  yellow, 
  golden, 
  or 
  orange 
  5 
  

  

  Basal 
  area 
  of 
  hind 
  wings 
  red 
  to 
  scarlet 
  8 
  

  

  5. 
  Black 
  or 
  fuscous 
  area 
  in 
  hind 
  wings 
  covering 
  apical 
  three-fourths 
  ; 
  cephalic 
  

  

  process 
  longer 
  than 
  pronotum 
  regalis, 
  new 
  species 
  

  

  Black 
  or 
  fuscous 
  area 
  in 
  hind 
  wings 
  covering 
  apical 
  one-third 
  or 
  less 
  ; 
  cephalic 
  

   process 
  shorter 
  than 
  pronotum 
  6 
  

  

  6. 
  Basal 
  area 
  of 
  hind 
  wings 
  golden 
  yellow; 
  elytra 
  flecked 
  with 
  yellow 
  and 
  

  

  brown 
  xanthopterus 
  Schmidt 
  

  

  Basal 
  area 
  of 
  hind 
  wings 
  orange 
  7 
  

  

  3Bnt. 
  Zeit. 
  Stettin, 
  vol. 
  71. 
  pp. 
  144-14R. 
  1910 
  (Ecuador). 
  

   <Ent. 
  Tidskr., 
  vol. 
  52, 
  pp. 
  188, 
  1931 
  (Ecuador). 
  

  

  