﻿EUCNEMIDOPHORUS 
  RHODODACTYLA. 
  257 
  

  

  Original 
  description". 
  — 
  Heckrosen 
  Geistchen, 
  larv. 
  Rosae 
  caninae 
  

   (Schiffermiiller 
  and 
  Denis). 
  [Pterophorus 
  rhododactylus, 
  alis 
  fissis 
  

   flavescentibus 
  ; 
  strigis 
  albis, 
  anticis 
  bifidis, 
  posticis 
  tripartitis. 
  (Alucita 
  

   rhododactyla, 
  Wien. 
  Verz., 
  p. 
  146, 
  no. 
  5.) 
  Habitat 
  in 
  Saxonise 
  Rosis, 
  

   Mus. 
  Dom. 
  Zschuck. 
  Alse 
  anticae 
  flavae, 
  basi 
  obscuriores 
  strigis 
  duabus 
  

   albis, 
  anteriore 
  obliqua 
  usque 
  ad 
  strigam 
  posteriorem 
  fissaB. 
  Posticse 
  

   tripartita? 
  lobis 
  duobus 
  anterioribus 
  flavescentibus, 
  tertio 
  albo 
  macula 
  

   magna 
  ante 
  apicem 
  ferraginea. 
  Corpus 
  ferrugineum 
  thoracis 
  lateribus 
  

   flavescentibus 
  (Fabricius, 
  Mantissa 
  Bisector 
  um, 
  ii., 
  p. 
  259).] 
  

  

  Imago. 
  — 
  21mm. 
  -23mm. 
  Head 
  and 
  thorax 
  the 
  colour 
  of 
  the 
  fore- 
  

   wings 
  ; 
  the 
  abdomen 
  of 
  the 
  same 
  colour 
  but 
  variegated 
  with 
  whitish 
  

   scales. 
  The 
  anterior 
  wings 
  divided 
  into 
  two 
  lobes, 
  the 
  apex 
  pointed 
  ; 
  the 
  

   ground 
  colour 
  rich 
  ochreous-brown 
  much 
  peppered 
  with 
  white 
  scales 
  

   along 
  the 
  costa, 
  which 
  develop 
  into 
  a 
  large 
  whitish 
  blotch 
  in 
  the 
  

   centre 
  of 
  the 
  costal 
  area 
  ; 
  a 
  slender 
  white 
  fascia, 
  parallel 
  to 
  the 
  hind- 
  

   margin, 
  extends 
  from 
  the 
  costa 
  to 
  the 
  inner 
  margin 
  ; 
  the 
  inner 
  margin 
  

   whitish, 
  and 
  connected 
  by 
  some 
  whitish 
  scales 
  with 
  the 
  pale 
  costal 
  

   blotch 
  ; 
  fringes 
  with 
  the 
  outer 
  part 
  whitish, 
  the 
  inner 
  dark. 
  The 
  

   posterior 
  wings 
  shiny 
  ochreous-brown, 
  the 
  third 
  plumule 
  white 
  along 
  

   its 
  inner 
  edge 
  ; 
  a 
  tooth 
  of 
  black 
  scales 
  towards 
  apex 
  ; 
  fringes 
  brown, 
  

   with 
  white 
  tips 
  to 
  the 
  plumules. 
  

  

  Genitalia. 
  — 
  The 
  9th 
  dorsal 
  plate 
  belonging 
  to 
  the 
  $ 
  genitalia 
  is 
  

   tolerably 
  large, 
  arched, 
  with 
  a 
  notch 
  on 
  the 
  hind 
  margin 
  ; 
  the 
  uncus 
  

   (10th 
  dorsal 
  plate) 
  strongly 
  curved 
  on 
  its 
  underside 
  with 
  a 
  continua- 
  

   tion 
  projecting 
  vertically, 
  lunular-shaped 
  in 
  front, 
  the 
  terminal 
  portion 
  

   of 
  the 
  intestine 
  passing 
  through 
  the 
  inner 
  half 
  of 
  it. 
  The 
  genital 
  

   valves 
  (appendages 
  or 
  flaps) 
  large, 
  obliquely 
  cut 
  off 
  behind, 
  with 
  a 
  

   blunt 
  point 
  (apex) 
  ; 
  from 
  the 
  lower 
  edge 
  of 
  each 
  appendage 
  a 
  long, 
  

   thin, 
  continuation 
  extends 
  straight 
  towards 
  the 
  front. 
  The 
  9th 
  

   ventral 
  appendage 
  very 
  small, 
  extending 
  backwards, 
  pointed, 
  beset 
  

   with 
  long 
  scale-hairs 
  (Hofmann, 
  Deutsch. 
  Pteroph., 
  p. 
  35, 
  pi. 
  iii., 
  

   fig- 
  4). 
  

  

  Egglaying. 
  — 
  Eggs 
  deposited 
  by 
  a 
  $ 
  sleeved 
  on 
  a 
  rose-tree 
  were 
  

   laid 
  on 
  the 
  underside 
  of 
  a 
  rose-leaf. 
  Dieroff 
  notes 
  that, 
  in 
  confine- 
  

   ment, 
  at 
  Zwotzen-on-the-Elster, 
  a 
  £ 
  laid 
  a 
  single 
  egg 
  on 
  May 
  28th, 
  on 
  

   the 
  following 
  day 
  two-thirds 
  of 
  the 
  batch, 
  whilst 
  on 
  the 
  morning 
  of 
  

   the 
  30th 
  the 
  egglaying 
  was 
  finished 
  ; 
  the 
  eggs 
  were 
  scattered 
  loosely, 
  

   and 
  not 
  attached. 
  

  

  Ovum. 
  — 
  About 
  *7mm. 
  long, 
  and 
  -42mm. 
  wide. 
  Full 
  yellow 
  in 
  

   colour. 
  In 
  outline 
  a 
  perfect 
  oval, 
  narrowing 
  at 
  both 
  ends, 
  and 
  

   scarcely 
  any 
  wider 
  at 
  the 
  micropylar 
  end 
  than 
  at 
  its 
  nadir 
  ; 
  the 
  upper 
  

   and 
  lower 
  surfaces 
  somewhat 
  flattened, 
  the 
  upper 
  somewhat 
  depressed 
  

   centrally 
  ; 
  the 
  surface 
  very 
  shiny, 
  with 
  an 
  exceedingly 
  faint, 
  large- 
  

   meshed 
  reticulation 
  [Described 
  July 
  18th, 
  1899, 
  from 
  eggs 
  received 
  

   from 
  Mr. 
  Whittle] 
  . 
  Green-yellow 
  in 
  colour 
  at 
  first, 
  later 
  turning 
  

   black 
  (Dieroff). 
  

  

  Habits 
  of 
  larva. 
  — 
  As 
  the 
  egg 
  hatches 
  in 
  a 
  few 
  days, 
  and 
  the 
  

   larva 
  is 
  comparatively 
  small 
  in 
  the 
  spring, 
  one 
  suspects 
  that 
  it 
  hvber- 
  

   nates 
  through 
  the 
  winter, 
  possibly 
  in 
  the 
  second 
  instar, 
  as 
  do 
  other 
  

   Platyptiliids 
  ; 
  exact 
  knowledge 
  on 
  the 
  point, 
  however, 
  is 
  still 
  wanting. 
  

  

  * 
  SchiHernuiller 
  and 
  Denis 
  simply 
  write 
  (Sys, 
  !'<•;•;., 
  p. 
  L46) 
  : 
  *' 
  Heckrosen 
  

   Geistchen, 
  Larv. 
  Rosae 
  caninae"; 
  whilst 
  Ooze 
  (Ent. 
  Beit., 
  iv., 
  3, 
  pp. 
  171 
  c: 
  acq.) 
  

   simply 
  gives 
  the 
  name 
  with 
  SchilTenmillor 
  and 
  Denis' 
  reference. 
  

  

  