﻿OXYPTILINiE. 
  407 
  

  

  Imago.— 
  Forehead 
  without 
  cone. 
  Antennae 
  in 
  both 
  sexes 
  very 
  shortly 
  ciliated 
  ; 
  

   palpi 
  longer 
  than 
  the 
  head, 
  more 
  or 
  less 
  laterally 
  compressed, 
  porrected, 
  or 
  some- 
  

   what 
  ascending; 
  the 
  second 
  joint 
  in 
  most 
  species 
  with 
  a 
  terminal 
  projecting 
  pointed 
  

   scale-tuft 
  (in 
  Oxyptilus 
  didactylus, 
  0. 
  leonuri, 
  and 
  0. 
  teucrii 
  it 
  is 
  absent); 
  the 
  third 
  

   joint 
  longer 
  than 
  this 
  tuft, 
  slender 
  and 
  pointed, 
  often 
  somewhat 
  drooping, 
  and, 
  in 
  

   that 
  case, 
  lying 
  on 
  the 
  scale-tuft 
  of 
  the 
  second 
  joint, 
  so 
  that 
  this 
  may 
  then 
  be 
  easily 
  

   overlooked. 
  Legs 
  long 
  and 
  thin, 
  the 
  anterior 
  and 
  middle 
  tibiae 
  at 
  the 
  ends, 
  and 
  the 
  

   posterior 
  at 
  the 
  end 
  and 
  in 
  the 
  middle 
  thickened 
  with 
  scales. 
  In 
  one 
  portion 
  of 
  

   the 
  species 
  (Division 
  I 
  = 
  our 
  Oxyptilidi) 
  the 
  end 
  of 
  the 
  abdomen 
  is 
  furnished, 
  in 
  the 
  

   male, 
  with 
  a 
  short 
  anal 
  tuft 
  divided 
  on 
  the 
  upper 
  and 
  lower 
  sides, 
  while 
  in 
  another 
  

   portion 
  (Division 
  11 
  = 
  our 
  Gapperiidi) 
  it 
  is 
  simple, 
  acuminate, 
  and 
  laterally 
  some- 
  

   what 
  compressed 
  at 
  the 
  point. 
  The 
  abdomen 
  of 
  the 
  female 
  is, 
  at 
  the 
  end, 
  laterally 
  

   compressed, 
  posteriorly, 
  straightly 
  or 
  obliquely 
  terminated. 
  Forewings 
  fissured 
  to 
  

   beyond 
  one-third, 
  the 
  upper 
  segment 
  running 
  to 
  a 
  point, 
  the 
  lower 
  segment 
  with 
  a 
  

   broad 
  prominent 
  point, 
  and 
  more 
  or 
  less 
  distinct 
  anal 
  angle. 
  Segments 
  of 
  the 
  hind- 
  

   wings 
  narrow 
  and 
  pointed, 
  the 
  third 
  linear 
  without 
  anal 
  angle. 
  Neuration: 
  The 
  

   neuration 
  shows 
  a 
  deviation 
  from 
  the 
  genera 
  hitherto 
  noticed 
  (Platyptiliinae, 
  

   Eucnemidophorinae, 
  Amblyptiliinae, 
  and 
  Stenoptiliinae) 
  in 
  so 
  far 
  that, 
  on 
  the 
  

   forewings, 
  II 
  1 
  arises 
  from 
  the 
  upper 
  corner 
  of 
  the 
  median 
  cell, 
  very 
  close 
  to 
  the 
  

   common 
  stem 
  of 
  II 
  2 
  , 
  II 
  3 
  , 
  and 
  II 
  4 
  , 
  but 
  it 
  only 
  reaches 
  to 
  a 
  little 
  beyond 
  the 
  point 
  

   where 
  II 
  2 
  branches 
  off 
  (0. 
  hieracii) 
  [taf. 
  ii., 
  fig. 
  5]. 
  In 
  another 
  species 
  (0. 
  

   didactylus), 
  11^ 
  , 
  on 
  the 
  contrary, 
  extends 
  beyond 
  the 
  branching 
  point 
  of 
  II 
  3 
  , 
  

   while 
  II 
  2 
  is 
  either 
  absent 
  or 
  concurrent 
  with 
  11^. 
  In 
  both 
  cases 
  1I 
  5 
  arises 
  from 
  

   the 
  very 
  weak, 
  somewhat 
  inwardly 
  bent, 
  disoocellular, 
  and 
  runs 
  parallel 
  with 
  II 
  4 
  

   along 
  the 
  inner 
  margin 
  of 
  the 
  upper 
  segment. 
  In 
  other 
  respects 
  the 
  neuration 
  is 
  

   normal. 
  Stem 
  IV 
  has 
  three 
  branches 
  on 
  both 
  the 
  fore- 
  and 
  hindwing. 
  Typical 
  

   markings 
  : 
  The 
  ground 
  colour 
  is 
  nearly 
  always 
  brown, 
  differently 
  tinted 
  by 
  the 
  

   more 
  or 
  less 
  richly 
  sprinkled 
  yellow 
  and 
  dark, 
  to 
  almost 
  black, 
  scales, 
  from 
  cinnamon- 
  

   brovvn, 
  or 
  red 
  -brown, 
  to 
  a 
  more 
  or 
  less 
  dark 
  grey-brown. 
  The 
  spot 
  on 
  the 
  inner 
  

   margin 
  and 
  thediscoidal 
  spot 
  are 
  generally 
  present, 
  commonly, 
  posteriorly, 
  more 
  or 
  

   less 
  heightened 
  with 
  white 
  scaling, 
  now 
  and 
  then 
  in 
  the 
  form 
  of 
  small 
  white 
  strigae. 
  

   Behind 
  the 
  insignificant 
  plical 
  spots, 
  which 
  are 
  sometimes 
  combined 
  in 
  a 
  transverse 
  

   line, 
  the 
  base 
  of 
  the 
  fissure 
  is 
  nearly 
  always 
  bordered 
  with 
  white. 
  The 
  costa 
  usually 
  

   marked 
  with 
  a 
  narrow 
  darker 
  stripe 
  is 
  sometimes 
  more, 
  sometimes 
  less, 
  sprinkled 
  

   with 
  white 
  scales. 
  Over 
  both 
  segments 
  run 
  two 
  whitish 
  transverse 
  lines, 
  the 
  anterior 
  

   mostly 
  broader, 
  running 
  obliquely 
  inwards 
  from 
  the 
  costa, 
  and 
  more 
  or 
  less 
  distinctly 
  

   continued 
  beyond 
  the 
  fissure 
  on 
  the 
  lower 
  segment, 
  cutting 
  the 
  fringes 
  of 
  both 
  

   segments 
  on 
  the 
  costa 
  and 
  inner 
  margin 
  ; 
  the 
  posterior 
  is 
  much 
  narrower, 
  on 
  the 
  

   upper 
  segment 
  straight 
  or 
  little 
  oblique, 
  sometimes 
  angulated, 
  on 
  the 
  lower 
  segment 
  

   very 
  oblique, 
  parallel 
  with 
  the 
  margin, 
  cutting 
  the 
  fringes 
  of 
  the 
  upper 
  segments 
  on 
  

   thecosta 
  and 
  inner 
  margin, 
  those 
  of 
  the 
  lower 
  segment 
  only 
  on 
  the 
  costa. 
  The 
  costal 
  

   fringes 
  of 
  the 
  upper 
  segment 
  are 
  dark, 
  from 
  the 
  posterior 
  transverse 
  line 
  up 
  to 
  the 
  

   apex 
  white. 
  The 
  inner 
  marginal 
  fringes 
  of 
  the 
  upper 
  segment, 
  and 
  the 
  outer 
  

   marginal 
  and 
  inner 
  marginal 
  fringes 
  of 
  the 
  lower 
  segment, 
  are, 
  in 
  their 
  basal 
  halves, 
  

   several 
  times 
  cut 
  by 
  snow-white 
  scales, 
  which 
  mostly 
  border 
  on 
  more 
  or 
  less 
  deep 
  

   black 
  spaces, 
  so 
  that 
  the 
  fringes 
  often 
  present 
  a 
  rich 
  variegated 
  appearance. 
  In 
  some 
  

   species, 
  the 
  concave 
  outer 
  margin 
  of 
  the 
  lower 
  segment 
  is 
  marked 
  by 
  a 
  tine 
  white 
  

   or, 
  at 
  any 
  rate, 
  pale 
  basal 
  line 
  in 
  the 
  fringe; 
  in 
  others 
  the 
  fringes 
  are, 
  immediately 
  

   before 
  the 
  anal 
  angle, 
  for 
  their 
  whole 
  length 
  barred 
  with 
  white, 
  or, 
  at 
  least, 
  with 
  

   pale 
  colour, 
  in 
  greater 
  or 
  less 
  breadth. 
  Hindwings 
  unicolorous 
  ; 
  in 
  the 
  fringes 
  

   of 
  the 
  3rd 
  segment 
  on 
  the 
  costa, 
  as 
  well 
  as 
  on 
  the 
  inner 
  margin, 
  there 
  are 
  tufts 
  of 
  

   thick 
  black 
  scales, 
  which, 
  in 
  the 
  individual 
  species, 
  are 
  very 
  different 
  as 
  to 
  their 
  

   form 
  and 
  position 
  — 
  nearer 
  or 
  further 
  from 
  the 
  apex. 
  Between 
  these 
  scale-tufts 
  and 
  

   the 
  base 
  of 
  the 
  segment 
  there 
  are, 
  at 
  the 
  base 
  of 
  the 
  fringes, 
  single 
  thick 
  black 
  and 
  

   white 
  scales. 
  On 
  the 
  underside 
  of 
  the 
  upper 
  segment 
  both 
  transverse 
  lines 
  are 
  

   visible, 
  but 
  only 
  the 
  posterior 
  on 
  the 
  lower 
  segment. 
  The 
  fust 
  segment 
  of 
  the 
  

   hindwing 
  exhibits, 
  usually, 
  two 
  white 
  spots, 
  rarely 
  only 
  one 
  ; 
  the 
  third 
  segment 
  in 
  

   front 
  of 
  the 
  scale-tuft 
  is 
  white 
  to 
  a 
  larger 
  or 
  smaller 
  extent, 
  the 
  second 
  segments 
  

   always 
  without 
  markings, 
  The 
  head, 
  respectively 
  forehead 
  and 
  crown, 
  is 
  of 
  the 
  

   same 
  colour 
  as 
  the 
  forewings, 
  bordered 
  finely 
  with 
  white 
  on 
  the 
  sides 
  above 
  the 
  

   eyes, 
  antennae 
  spotted 
  with 
  white 
  and 
  brown, 
  white 
  beneath 
  at 
  the 
  base. 
  Fro- 
  and 
  

   mesothorax 
  unicolorous 
  dark, 
  the 
  latter 
  bordered 
  on 
  the 
  posterior 
  margin 
  with 
  a 
  

   straight 
  pale 
  line; 
  patagia 
  usually 
  pale 
  coloured 
  ; 
  metathorax 
  above 
  with 
  two 
  dark 
  

   whitish, 
  or 
  yellowish, 
  bordered 
  lateral 
  triangles, 
  in 
  the 
  centre 
  dark. 
  Coxa 
  brown, 
  

   widened 
  at 
  the 
  apex 
  by 
  rough 
  hairs, 
  ami 
  edged 
  with 
  white. 
  Femur 
  brown, 
  exteriorly 
  

  

  