﻿86 
  

  

  BRITISH 
  LEPLDOPTERA. 
  

  

  1. 
  The 
  scales 
  of 
  the 
  frons 
  produced 
  into 
  a 
  

  

  more 
  or 
  less 
  elongate 
  cone 
  or 
  tuft. 
  (The 
  

   tornal 
  lobe 
  of 
  the 
  forewings 
  distinct.) 
  

  

  a. 
  The 
  inner 
  [i.e., 
  dorsal) 
  edge 
  of 
  the 
  

  

  forewings 
  entire, 
  not 
  toothed. 
  

  

  Antenna? 
  ciliate 
  Amblyptiltjs. 
  

  

  b. 
  The 
  inner 
  (i.e.., 
  dorsal) 
  edge 
  of 
  the 
  

  

  forewings 
  entire, 
  not 
  toothed. 
  

   i. 
  Forewings 
  in 
  repose 
  covering 
  the 
  

   hindwings 
  flatly 
  throughout. 
  

   The 
  palpi 
  evenly 
  cylindrical. 
  

   Antennae 
  ciliate 
  Platyptelus. 
  

  

  ii. 
  Forewings 
  in 
  repose 
  enfolding 
  the 
  

   hindwings 
  by 
  the 
  bending 
  under 
  

   of 
  the 
  extreme 
  dorsum. 
  Palpi 
  

   with 
  the 
  median 
  joint 
  enlarged. 
  

   The 
  antenna? 
  of 
  the 
  3 
  ciliate 
  aIim.eseoptilus. 
  

  

  2. 
  The 
  hairs 
  on 
  the 
  frons 
  appressed 
  not 
  

  

  forming 
  any 
  conical 
  projection. 
  (An- 
  

   tennas 
  ciliate.) 
  

  

  a. 
  The 
  lobes 
  of 
  the 
  forewings 
  with 
  

  

  noticeable 
  posterior 
  angle. 
  The 
  

   palpi 
  (joints) 
  of 
  uneven 
  thickness 
  ; 
  

   the 
  median 
  joint 
  thickened 
  with 
  

   hairs. 
  Tarsi 
  short, 
  the 
  hind 
  tibia? 
  

   thickened 
  Cn-^medophorus. 
  

  

  b. 
  The 
  anterior 
  lobe 
  of 
  the 
  forewings 
  not 
  

  

  angulate. 
  The 
  third 
  lobe 
  of 
  the 
  

   hindwing 
  towards 
  the 
  apex 
  with 
  

   black 
  scale-cilia. 
  The 
  median 
  joint 
  

   of 
  the 
  palpi 
  at 
  most 
  with 
  a 
  short 
  

   hair-tuft 
  beneath 
  Oxypteles. 
  

  

  II. 
  The 
  lobes 
  of 
  the 
  wings 
  elongate, 
  very 
  narrow, 
  of 
  

  

  almost 
  even 
  width 
  AcrpiiLrs. 
  

  

  The 
  species 
  included 
  in 
  the 
  various 
  genera 
  are 
  as 
  follows 
  : 
  

  

  1 
  

   2 
  

  

  C. 
  rhododaetylus, 
  W.Y. 
  

  

  Cn.e:eedophorus, 
  Wallgrn. 
  

   Platyptelus 
  (Hb.), 
  Zell. 
  

   a. 
  Frontal 
  tuft 
  rather 
  long. 
  Palpi 
  with 
  the 
  terminal 
  joint 
  rather 
  long, 
  

  

  somewhat 
  drooping. 
  Tibia? 
  slender 
  — 
  P. 
  ochrodactylus, 
  Hb. 
  

   3. 
  Frontal 
  tuft 
  short. 
  Palpi 
  with 
  the 
  terminal 
  joint 
  rather 
  short, 
  

   porrected. 
  Tibiae 
  with 
  the 
  end 
  rather 
  thickened 
  — 
  P. 
  zetterstedtii, 
  

   Zell., 
  P. 
  nemoralis, 
  Zell., 
  P. 
  gonodactylus, 
  W.V., 
  P. 
  tesseradacti/lus. 
  

   Linn. 
  

  

  3. 
  Ailblyptelus, 
  Hb. 
  — 
  A. 
  acantliodactylus. 
  Hb. 
  

  

  4. 
  Oxyptelus, 
  Zell. 
  

  

  I. 
  Forewings 
  with 
  white 
  markings 
  on 
  the 
  upperside. 
  Hindwings 
  with 
  

  

  the 
  underside 
  of 
  the 
  first 
  plumule 
  furnished 
  with 
  a 
  white 
  spot 
  at 
  the 
  

   apex. 
  

  

  a. 
  The 
  tips 
  of 
  the 
  cilia 
  on 
  the 
  hinder 
  margin 
  of 
  the 
  first 
  lobe 
  of 
  the 
  

   forewing 
  dusky 
  — 
  0. 
  pilosellae, 
  Zell., 
  0. 
  hieracii, 
  Zell., 
  0. 
  

   erieetorum, 
  Zell., 
  0. 
  obscurus, 
  ZeR. 
  

   3. 
  The 
  tips 
  of 
  the 
  cilia 
  on 
  the 
  hinder 
  margin 
  of 
  the 
  first 
  lobe 
  of 
  the 
  

   forewings 
  white 
  — 
  0. 
  didaetyla, 
  Linn. 
  

  

  II. 
  Forewings 
  with 
  dull 
  yellowish 
  markings 
  on 
  the 
  upperside. 
  Hindwings 
  

  

  with 
  the 
  underside 
  of 
  the 
  first 
  plumule 
  unspotted 
  at 
  the 
  tip 
  — 
  

   0. 
  bohemanni, 
  Wallgrn. 
  

   •5. 
  aI:dle:seoptelus, 
  Wallgrn. 
  — 
  M. 
  mictodactylus, 
  W.V., 
  31. 
  serotinus, 
  Zell., 
  

   M. 
  pterodactylus, 
  Linn., 
  31. 
  paludicola, 
  Wallgrn. 
  

  

  6. 
  Oed-i^iatophokus, 
  Wallgrn. 
  — 
  0. 
  lithodacti/lus, 
  Treits. 
  

  

  7. 
  Pterophokus, 
  Geoff. 
  — 
  P. 
  monodactylus, 
  Linn. 
  

  

  8. 
  Leioptelus, 
  Wallgrn. 
  

  

  I. 
  The 
  anal 
  angle 
  of 
  the 
  hind 
  lobe 
  of 
  the 
  forewings 
  indistinct, 
  obtuse, 
  

   and 
  hardly 
  visible 
  — 
  L. 
  scarodactylus, 
  Zell., 
  L. 
  tephradactylus, 
  Hb., 
  

   L. 
  microdactylus, 
  Hb., 
  L. 
  osteodactylus, 
  Zell. 
  

  

  