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  THE 
  LARVA 
  AND 
  PUPA 
  OF 
  ORTHOPODOMYIA 
  ARB0R1C0LLIS, 
  

  

  D'EMMEREZ 
  DE 
  CHARMOY, 
  1908. 
  

  

  By 
  Malcolm 
  E. 
  MacGregor, 
  

  

  Entomologist, 
  Wellcome 
  Bureau 
  of 
  Scientific 
  Research, 
  

   Director, 
  Malaria 
  Research 
  Laboratory, 
  Reduit, 
  Mauritius, 
  

  

  and 
  S. 
  Gebert, 
  

   Assistant. 
  

  

  (Plate 
  XXIII.) 
  

  

  Orthopodomyia 
  arboricollis 
  was 
  described 
  under 
  the 
  name 
  of 
  Culex 
  arboricollis 
  

   by 
  d'Emmerez 
  de 
  Charmoy, 
  from 
  adults 
  reared 
  by 
  him 
  from 
  larvae 
  that 
  were 
  found 
  

   by 
  Sir 
  Ronald 
  Ross, 
  K.C.B., 
  F.R.S., 
  in 
  a 
  tree-hole 
  at 
  Vacoas. 
  Mr. 
  d'Emmerez 
  

   tells 
  us 
  that 
  these 
  adults 
  were 
  the 
  only 
  ones 
  he 
  has 
  seen 
  in 
  his 
  long 
  experience 
  in 
  

   Mauritius, 
  and 
  the 
  species 
  so 
  far 
  is 
  recorded 
  from 
  this 
  island 
  only. 
  Mr. 
  F. 
  W. 
  Edwards, 
  

   after 
  examination 
  of 
  the 
  types 
  in 
  the 
  collections 
  at 
  the 
  Liverpool 
  School 
  of 
  Tropical 
  

   Medicine, 
  has 
  recently 
  correctly 
  assigned 
  the 
  insect 
  to 
  the 
  genus 
  Orthopodomyia. 
  

  

  Soon 
  after 
  opening 
  the 
  laboratory 
  at 
  Reduit 
  a 
  tree-hole 
  was 
  discovered 
  near 
  by 
  

   containing 
  very 
  large 
  numbers 
  of 
  the 
  larvae 
  of 
  Aedes 
  albopictus. 
  About 
  100 
  larvae 
  

   from 
  this 
  tree-hole 
  were 
  brought 
  to 
  the 
  laboratory 
  in 
  order 
  to 
  get 
  good 
  specimens 
  

   for 
  our 
  collections. 
  Before 
  they 
  were 
  set 
  aside 
  to 
  develop, 
  the 
  larvae 
  were 
  looked 
  

   over 
  with 
  the 
  naked 
  eye 
  and 
  were 
  judged 
  to 
  be 
  all 
  of 
  one 
  species, 
  Aedes 
  albopictus, 
  

   but 
  some 
  days 
  later 
  when 
  adults 
  had 
  begun 
  to 
  emerge 
  we 
  were 
  surprised 
  to 
  discover 
  

   among 
  them 
  a 
  particularly 
  striking 
  and 
  beautiful 
  male 
  mosquito. 
  It 
  was 
  at 
  once 
  

   recognised 
  as 
  Orthopodomyia 
  arboricollis. 
  

  

  Description 
  of 
  the 
  Adult 
  Mosquito. 
  

  

  The 
  mosquito 
  is 
  quite 
  remarkable, 
  as 
  it 
  is 
  a 
  very 
  large 
  and 
  beautifully 
  ornamented 
  

   Culicine 
  with 
  the 
  wings 
  spotted 
  and 
  banded 
  so 
  that 
  they 
  resemble 
  the 
  wings 
  of 
  an 
  

   Anopheline, 
  even 
  to 
  the 
  dark 
  and 
  light 
  bands 
  on 
  the 
  costa. 
  

  

  d'Emmerez's 
  description 
  of 
  the 
  $ 
  and 
  $, 
  which 
  we 
  have 
  found 
  excellent, 
  is 
  as 
  

   follows 
  : 
  — 
  

  

  " 
  (J. 
  — 
  Head 
  : 
  eyes 
  greenish 
  ; 
  occiput 
  yellowish, 
  with 
  long, 
  white 
  and 
  yellow, 
  

   curved 
  scales 
  ; 
  the 
  yellow 
  scales 
  are 
  placed 
  closely 
  in 
  the 
  line 
  separating 
  the 
  eyes. 
  

   Antennae 
  bear 
  long 
  hairs 
  which 
  are 
  pale 
  j^ellowish 
  apically, 
  and 
  greyish-black 
  basally 
  ; 
  

   the 
  segments 
  of 
  the 
  basal 
  half 
  furnished 
  with 
  very 
  long, 
  narrow 
  curved 
  scales 
  ; 
  apical 
  

   segment 
  with 
  a 
  few 
  short 
  hairs 
  ; 
  the 
  basal 
  segment 
  with 
  short, 
  flat 
  white 
  scales. 
  

   Palpi 
  with 
  four 
  segments, 
  as 
  long 
  as 
  the 
  proboscis, 
  with 
  narrow 
  white 
  bands 
  at 
  the 
  

   base 
  and 
  apex 
  of 
  the 
  2nd, 
  3rd, 
  and 
  4th 
  segments 
  ; 
  white 
  scales 
  are 
  disseminated 
  all 
  

   over 
  the 
  segments. 
  Proboscis 
  black, 
  with 
  the 
  apex 
  paler 
  and 
  a 
  yellowish 
  band 
  in 
  the 
  

   middle. 
  Thorax 
  black, 
  covered 
  sparsely 
  with 
  long, 
  narrow 
  curved, 
  white 
  and 
  golden 
  

   scales, 
  and 
  long 
  black 
  hair-like 
  scales 
  ; 
  those 
  portions 
  of 
  the 
  thorax 
  which 
  are 
  not 
  

   covered 
  with 
  scales 
  form 
  velvet-black 
  spots. 
  Scutellum 
  bordered 
  with 
  flat 
  whitish 
  

   scales, 
  and 
  dark 
  hair-like 
  scales 
  ; 
  metanotum 
  nude, 
  black. 
  Abdomen 
  velvety-black, 
  

   with 
  whitish 
  basal 
  bands 
  ; 
  apical 
  segment 
  with 
  a 
  few 
  whitish 
  scales 
  at 
  apex 
  ; 
  all 
  

   segments 
  with 
  long 
  yellowish 
  marginal 
  hairs. 
  Legs 
  black, 
  with 
  more 
  or 
  less 
  loosely 
  

   scattered 
  yellowish 
  scales 
  ; 
  the 
  articulations 
  of 
  the 
  femora 
  and 
  tibiae 
  are 
  basally 
  

   and 
  apically 
  banded 
  ; 
  the 
  tarsi 
  are 
  black 
  without 
  any 
  coloured 
  scales 
  ; 
  metatarsi 
  

   of 
  the 
  front 
  legs 
  are 
  basally 
  banded 
  ; 
  the 
  other 
  tarsal 
  segments 
  are 
  black 
  ; 
  in 
  the 
  

   mid-leg 
  the 
  metatarsi 
  and 
  the 
  first 
  tarsal 
  segments 
  are 
  basally 
  banded 
  ; 
  in 
  the 
  hind 
  

   legs 
  the 
  metatarsi 
  are 
  basally 
  banded 
  with 
  yellowish 
  scales, 
  and 
  apically 
  banded 
  with 
  

   white 
  scales 
  ; 
  all 
  the 
  remaining 
  segments 
  are 
  basally 
  and 
  apically 
  banded 
  with 
  white 
  

   scales. 
  Wings 
  spotted 
  ; 
  the 
  black 
  spots 
  on 
  the 
  costa 
  extend 
  to 
  the 
  auxiliary 
  vein 
  ; 
  

  

  