﻿AMBLYPTILIA 
  COSMODACTYLA. 
  

  

  278 
  

  

  cbsmodactyla 
  is 
  chestnut- 
  brown 
  does 
  not 
  at 
  all 
  apply 
  to 
  our 
  punctidactyla 
  as 
  

   we 
  know 
  it, 
  although 
  no 
  doubt 
  he 
  is 
  here 
  referring 
  to 
  the 
  dark 
  examples 
  

   in 
  the 
  " 
  Frey 
  collection" 
  in 
  the 
  British 
  Museum, 
  which 
  are 
  entirely 
  differ- 
  

   ent 
  from 
  any 
  British 
  examples 
  that 
  we 
  have 
  yet 
  seen 
  of 
  punctidactyla. 
  

   Nolcken, 
  also, 
  who 
  appears 
  to 
  have 
  known 
  the 
  species 
  through 
  Zeller 
  

   and 
  Frey, 
  notes 
  (Lep. 
  Faun. 
  Estland, 
  etc., 
  p. 
  82) 
  that 
  he 
  took 
  examples 
  

   of 
  cosmodactyla, 
  Hb. 
  (evidently 
  punctidactyla), 
  of 
  a 
  fresh 
  light-grey 
  

   colour 
  melting 
  into 
  greenish 
  (as 
  noted 
  by 
  Frey), 
  and, 
  later, 
  some 
  

   perfectly 
  typical 
  specimens, 
  without 
  saying, 
  however, 
  what 
  he 
  

   considered 
  ''typical," 
  although, 
  according 
  to 
  his 
  account 
  of 
  acantho- 
  

   dactyla, 
  Tr., 
  he 
  appears 
  to 
  have 
  considered 
  that 
  punctidactyla 
  ("cosmo- 
  

   dactyla") 
  was 
  only 
  distinguished 
  from 
  acanthodactyla, 
  Tr., 
  by 
  its 
  greyer 
  

   colour, 
  and 
  white-spotted 
  costal 
  margin. 
  Altogether 
  the 
  figures 
  of 
  

   Hiibner 
  are 
  very 
  puzzling. 
  At 
  any 
  rate, 
  the 
  greenish 
  species 
  must 
  be 
  

   called 
  punctidactyla, 
  Haw., 
  and, 
  in 
  our 
  opinion, 
  the 
  brown 
  species 
  is 
  

   cosmodactyla, 
  Hb. 
  Of 
  the 
  two 
  species, 
  Hofmann 
  says 
  (Die 
  Deutsch. 
  

   Pteroph., 
  p. 
  60) 
  : 
  " 
  The 
  genus 
  consists 
  of 
  only 
  two 
  species 
  standing 
  very 
  

   closely 
  to 
  each 
  other, 
  both 
  of 
  which 
  occur 
  in 
  several 
  (2-3) 
  different 
  

   forms. 
  Besides 
  the 
  difference 
  in 
  habits, 
  the 
  distinctions 
  lie 
  in 
  the 
  

   coloration 
  and 
  scaling 
  peculiar 
  to 
  each 
  species, 
  in 
  which 
  I 
  have 
  never 
  

   observed 
  any 
  intermediate 
  forms, 
  and 
  in 
  the 
  position 
  of 
  the 
  black 
  

   scale-tooth 
  of 
  the 
  3rd 
  plumule. 
  As 
  the 
  larvse 
  and 
  pupae 
  also 
  exhibit 
  

   slight 
  differences, 
  the 
  title 
  to 
  specific 
  rank 
  should 
  be 
  well 
  founded." 
  

   His 
  diagnoses 
  of 
  the 
  two 
  species 
  in 
  the 
  imaginal 
  form 
  (op. 
  cit., 
  p. 
  61) 
  

   read 
  as 
  follows 
  : 
  — 
  

  

  The 
  scale-tooth 
  on 
  the 
  3rd 
  plumule 
  of 
  the 
  hindwing 
  lies 
  fairly 
  exactly 
  in 
  the 
  

   middle 
  of 
  the 
  wing 
  (taking 
  the 
  inner 
  margin 
  as 
  the 
  space 
  measured). 
  Forewings 
  

   narrow, 
  ferruginous-brown, 
  reddish-brown, 
  or 
  brownish-grey, 
  with 
  darker 
  similarly 
  

   coloured 
  markings 
  and 
  sparse 
  white 
  scaling. 
  Body 
  slender 
  ... 
  cosmodactyla, 
  Tib. 
  

  

  The 
  scale-tooth 
  of 
  the 
  3rd 
  plumule 
  lies 
  distinctly 
  beyond 
  the 
  middle, 
  nearer 
  the 
  

   apex. 
  Forewings 
  broader, 
  blackish, 
  appearing 
  light, 
  and 
  as 
  if 
  marbled, 
  by 
  reason 
  of 
  

   the 
  rich 
  white 
  and 
  yellow 
  scaling, 
  often 
  with 
  transverse 
  rows 
  of 
  white 
  scales. 
  

   Markings 
  black, 
  body 
  stouter 
  ... 
  ... 
  ... 
  ... 
  punctidactyla, 
  Haw. 
  

  

  To 
  Hofmann 
  also 
  we 
  owe 
  the 
  discovery 
  of 
  an 
  actual 
  larval 
  distinction 
  

   between 
  these 
  two 
  species. 
  His 
  distinction 
  (since 
  verified 
  by 
  Chapman) 
  

   appears 
  to 
  be 
  as 
  follows 
  (Die 
  Deutsch. 
  Pteroph., 
  pp. 
  63 
  and 
  66) 
  : 
  — 
  

  

  Tubercles 
  large, 
  white, 
  many-haired, 
  mostly 
  with 
  one 
  longer 
  and 
  two 
  or 
  three 
  

   shorter 
  bristles, 
  the 
  latter 
  knobbed. 
  These 
  many-haired 
  tubercles 
  are 
  different 
  from 
  

   those 
  of 
  the 
  larvae 
  of 
  A. 
  punctidactyla, 
  which 
  have 
  2-haired 
  tubercles 
  only 
  on 
  the 
  

   flange. 
  The 
  prothorax 
  green, 
  with 
  a 
  finely 
  drawn 
  open 
  black 
  triangle 
  in 
  the 
  middle. 
  

   and 
  two 
  small 
  black 
  spots 
  on 
  each 
  side 
  ... 
  ... 
  ... 
  cosmodactyla, 
  ~Hh. 
  

  

  Tubercles 
  small, 
  of 
  the 
  colour 
  of 
  the 
  body, 
  single-haired, 
  only 
  those 
  on 
  the 
  

   flange 
  bearing 
  two 
  hairs. 
  The 
  body 
  is 
  also 
  thickly 
  covered, 
  especially 
  dorsally, 
  

   with 
  fine 
  short, 
  white, 
  not 
  clubbed, 
  hairs 
  (only 
  distinctly 
  visible 
  under 
  a 
  Lens). 
  

   The 
  prothorax 
  green 
  ... 
  ... 
  ... 
  punctidactyla, 
  Haw. 
  

  

  Amblyptilia 
  cosmodactyla, 
  Hiibner. 
  

  

  Synonymy. 
  — 
  Species: 
  Cosmodactyla, 
  Hb., 
  " 
  Sohmett. 
  Eur.," 
  Aluc. 
  pi. 
  viii.. 
  

   35-36(1823); 
  " 
  Verz.," 
  p. 
  430 
  (1825) 
  ; 
  Stphs., 
  "Illus., 
  "iv., 
  app. 
  p. 
  42 
  I 
  (1834); 
  Tutt, 
  

   11 
  Ent. 
  llec.," 
  xi., 
  p. 
  238 
  (1899) 
  ; 
  Bankes, 
  " 
  Ent. 
  Reo.," 
  xviii.. 
  p. 
  39 
  (1906). 
  Calo- 
  

   dactylus, 
  Fab., 
  "Mant. 
  Ins.," 
  ii., 
  p. 
  258 
  (1787) 
  ; 
  " 
  Ent, 
  Syst.," 
  iii.. 
  p. 
  346(1793) 
  ; 
  

   ?Sam., 
  "Ent. 
  Usef. 
  Comp.," 
  p. 
  409 
  (1819) 
  ; 
  Curt.. 
  " 
  Brit. 
  Ent.," 
  fo. 
  L61 
  (18271 
  ; 
  

   Stphs., 
  " 
  Illus. 
  Haust.," 
  iv., 
  p. 
  37(5 
  (1834) 
  ; 
  Wood. 
  •• 
  liul. 
  Ent.," 
  1st 
  ed., 
  p. 
  237, 
  

   pi. 
  lj., 
  fig, 
  1646 
  (1839). 
  Calodactyla, 
  de 
  Vill., 
  "Linn. 
  Ent. 
  Faun. 
  Sueo.," 
  iv.. 
  

   p. 
  546 
  (1789); 
  Hb., 
  "Raupen," 
  etc., 
  i\.. 
  Aluc 
  L, 
  pi, 
  o., 
  figs, 
  o-d 
  (ctrc. 
  L800) 
  ; 
  

   Haw., 
  "Lep. 
  Brit.," 
  p. 
  478 
  (1811); 
  Treits., 
  " 
  Die 
  Sohmett.," 
  i\.. 
  pt, 
  2. 
  p. 
  232 
  

   41833); 
  Stphs., 
  "Illus.," 
  etc., 
  iv., 
  app. 
  p. 
  121 
  (1834). 
  Acanthodactyla, 
  IV. 
  

  

  