﻿MAKASMARCHA 
  LUNiEDACTYLA. 
  

  

  891 
  

  

  Length 
  about 
  -55mm., 
  breadth 
  nearly 
  -4mm. 
  Colour 
  entirely 
  yellow, 
  

   surface 
  exceedingly 
  shiny 
  ; 
  when 
  near 
  hatching, 
  the 
  yellow 
  colour 
  

   still 
  remains, 
  but 
  the 
  micropylar 
  area 
  is 
  occupied 
  with 
  a 
  com- 
  

   paratively 
  large 
  black-brown 
  spot, 
  which 
  is 
  exceedingly 
  conspicuous 
  

   (the 
  head 
  of 
  embryo). 
  When 
  hatched, 
  the 
  eggshell 
  is 
  colourless 
  and 
  

   perfectly 
  transparent, 
  so 
  that 
  colour 
  is 
  derived 
  from 
  embryo. 
  [Eggs 
  

   laid 
  in 
  a 
  chip 
  box, 
  commenced 
  to 
  hatch 
  July 
  11th, 
  1899, 
  directly 
  after 
  

   description 
  was 
  made] 
  (Tutt). 
  A 
  large 
  oval 
  egg, 
  with 
  a 
  faint 
  suspicion 
  

   of 
  flattening 
  at 
  one 
  end. 
  Length 
  0'60mm., 
  width 
  0-85mm., 
  height 
  

   0-24mm. 
  The 
  sculpturing 
  is 
  of 
  cells 
  of 
  about 
  0-024mm. 
  diameter, 
  

   roughly 
  hexagonal, 
  without 
  well-marked 
  demarcations, 
  rather 
  as 
  if 
  

   each 
  cell 
  were 
  a 
  flattening, 
  as 
  by 
  a 
  hammer, 
  than 
  that 
  any 
  raised 
  ribs 
  

   separated 
  them 
  (in 
  this 
  respect 
  very 
  like 
  the 
  egg 
  of 
  Merrifieldia 
  tridac- 
  

   tyla 
  (tetradactyla) 
  (Chapman). 
  The 
  egg 
  is 
  light 
  greenish-yellow 
  when 
  

   laid, 
  but, 
  before 
  it 
  is 
  hatched, 
  a 
  dark 
  spot 
  appears 
  towards 
  the 
  apex 
  

   (Nolcken). 
  

  

  Habits 
  of 
  larva. 
  — 
  The 
  newly-hatched 
  yellow 
  larva 
  is 
  exceedingly 
  

   active, 
  crawling 
  quickly 
  and 
  restlessly. 
  What 
  happens 
  to 
  it 
  between 
  

   the 
  time 
  that 
  it 
  hatches 
  and 
  the 
  following 
  spring 
  is 
  unknown. 
  

   (One 
  suspects 
  that 
  it 
  mines, 
  like 
  the 
  Stenoptiliids, 
  into 
  its 
  foodplant, 
  

   hybernates 
  therein 
  in 
  its 
  second 
  instar, 
  and 
  comes 
  out 
  to 
  feed 
  openly 
  

   the 
  following 
  May.) 
  Chapman 
  says 
  (in 
  lift.) 
  : 
  "Where 
  the 
  larva 
  goes, 
  

   as 
  soon 
  as 
  hatched, 
  has 
  not 
  been 
  discovered. 
  Analogy 
  would 
  suggest 
  

   that 
  it 
  fed 
  somewhere, 
  fed 
  up 
  till 
  it 
  w 
  T 
  as 
  well-grown 
  in 
  its 
  second 
  

   instar, 
  and 
  then 
  hybernated. 
  No 
  trace 
  of 
  it, 
  or 
  its 
  hybernaculum, 
  has, 
  

   however, 
  yet 
  been 
  found, 
  after 
  several 
  searches, 
  both 
  on 
  pot 
  plants 
  and 
  

   in 
  the 
  field. 
  In 
  the 
  spring, 
  larvae 
  were 
  found; 
  the 
  smallest 
  of 
  these 
  was 
  

   presumably 
  in 
  the 
  third 
  instar, 
  i.e., 
  one 
  moult 
  beyond 
  the 
  second 
  instar 
  

   (hybernating 
  stage), 
  and, 
  as 
  there 
  were 
  two 
  further 
  moults, 
  this 
  would 
  

   give 
  the 
  larva 
  five 
  instars. 
  A 
  careful 
  measurement 
  of 
  the 
  head, 
  how- 
  

   ever, 
  upsets 
  any 
  such 
  inference, 
  and 
  shows 
  the 
  smallest 
  spring 
  larvae 
  to 
  

   be 
  in 
  the 
  second 
  instar, 
  and, 
  if 
  they 
  have 
  moulted 
  once 
  since 
  hyber- 
  

   nating, 
  the 
  larva 
  must 
  hybernate 
  in 
  first 
  instar. 
  The 
  question 
  then, 
  

   not 
  only 
  as 
  to 
  how 
  they 
  hybernate, 
  but 
  at 
  what 
  stage 
  they 
  hybernate, 
  

   remains 
  unsolved. 
  The 
  sizes 
  of 
  the 
  heads 
  of 
  the 
  larva 
  at 
  the 
  four 
  

   stages 
  is 
  as 
  follows 
  : 
  — 
  

  

  Maeasmarcha 
  lunze- 
  

  

  DACTYLA. 
  

  

  Measured. 
  

  

  Calculated 
  at 
  ratio 
  |rds. 
  

  

  LENGTH 
  OF 
  

   HEAD. 
  

  

  WIDTH. 
  

  

  LENGTH. 
  

  

  0- 
  108mm. 
  

  

  0-180 
  .. 
  

  

  0*300 
  ., 
  

   0-500 
  .. 
  

  

  WIDTH. 
  

  

  0-lSOnnn. 
  

  

  0-300 
  .. 
  

   0-500 
  .. 
  

   0-820 
  .. 
  

  

  First 
  stadium 
  

  

  Second 
  stadium 
  (first 
  

  

  spring 
  instar) 
  

   Third 
  stadium 
  

   Fourth 
  stadium 
  

  

  0-105mm. 
  

  

  0-180 
  ,, 
  

   0-300 
  ,, 
  

   0-540 
  „ 
  

  

  0-165111111. 
  

  

  0-300 
  ,, 
  

   0-480 
  ,. 
  

  

  '0-8-20 
  ,. 
  

  

  Comparing 
  this 
  with 
  similar 
  measurements 
  of 
  Amblyptxlia 
  cosmodactyla, 
  

   lib., 
  in 
  which 
  we 
  know 
  there 
  are 
  only 
  four 
  instars. 
  ami 
  using 
  |rds 
  

  

  the 
  same 
  multiplier), 
  we 
  get 
  : 
  — 
  

  

  