﻿153 
  

  

  TWO 
  NEW 
  SPECIES 
  OF 
  FRUIT 
  FLIES 
  FROM 
  SOUTHERN 
  INDIA. 
  

  

  By 
  Prof. 
  M. 
  Bezzi, 
  

   Turin, 
  Italy. 
  

  

  Bactrocera 
  (Chaetodacus) 
  bipustulata, 
  sp. 
  n. 
  

  

  Very 
  nearly 
  allied 
  to 
  B. 
  scutellaris, 
  Bezzi 
  (Memoirs 
  of 
  the 
  Indian 
  Museum, 
  iii, 
  1913, 
  

   p. 
  98, 
  pi. 
  viii, 
  fig. 
  10), 
  but 
  differing 
  in 
  its 
  smaller 
  size, 
  black 
  face, 
  differently 
  coloured 
  

   scutellum 
  and 
  unicolorous 
  wings. 
  This 
  last 
  character 
  distinguishes 
  it 
  at 
  once 
  from 
  

   any 
  other 
  Oriental 
  species 
  of 
  this 
  genus 
  at 
  present 
  known. 
  .. 
  

  

  <J. 
  Length 
  of 
  body, 
  5 
  mm. 
  

  

  Head 
  exactly 
  as 
  in 
  my 
  description 
  of 
  B. 
  scutellaris, 
  with 
  the 
  following 
  differences 
  :— 
  

   the 
  lunula 
  is 
  black 
  ; 
  the 
  face 
  is 
  entirely 
  of 
  a 
  shining 
  black 
  colour, 
  instead 
  of 
  yellow 
  

   with 
  two 
  black 
  spots. 
  Thorax 
  with 
  no 
  dorsal 
  yellow 
  stripes 
  behind 
  the 
  suture, 
  and 
  

   only 
  a 
  very 
  short 
  stripe 
  on 
  each 
  side 
  laterally 
  ; 
  the 
  other 
  yellow 
  markings 
  are 
  as 
  in 
  

   scutellaris. 
  Scutellum 
  black, 
  adorned 
  with 
  two 
  very 
  broad, 
  bright 
  orange 
  spots, 
  

   one 
  on 
  each 
  side; 
  or 
  it 
  might 
  be 
  described 
  as 
  bright 
  orange, 
  with 
  a 
  broad 
  median 
  

   longitudinal 
  black 
  band 
  ; 
  the 
  basal 
  pair 
  of 
  bristles 
  is 
  placed 
  near 
  the 
  base 
  of 
  the 
  yellow 
  

   spot, 
  the 
  apical 
  pair 
  is 
  placed 
  on 
  the 
  sides 
  of 
  the 
  black 
  stripe. 
  Abdomen 
  entirely 
  

   black, 
  even 
  on 
  the 
  venter 
  ; 
  there 
  is 
  a 
  dark 
  yellow 
  transverse 
  band 
  on 
  the 
  hind 
  border 
  

   of 
  the 
  second 
  segment, 
  and 
  sometimes 
  there 
  are 
  two 
  less 
  distinct 
  brownish-yellow 
  

   spots 
  on 
  the 
  middle 
  of 
  the 
  hind 
  border 
  of 
  the 
  third 
  and 
  fourth 
  segments. 
  Legs 
  as 
  in 
  

   scutellaris, 
  but 
  the 
  front 
  femora 
  are 
  almost 
  entirely 
  black 
  ; 
  middle 
  tibiae 
  and 
  tarsi 
  

   wholly 
  yellow. 
  Wings 
  hyaline 
  and 
  without 
  any 
  dark 
  pattern 
  ; 
  only 
  the 
  stigma 
  is 
  

   of 
  a 
  dark 
  yellowish 
  colour 
  ; 
  anal 
  cell 
  a 
  little 
  infuscated 
  towards 
  the 
  end 
  of 
  its 
  prolonged 
  

   point. 
  Type 
  $ 
  and 
  another 
  specimen 
  from 
  Mysore, 
  4,100 
  feet, 
  Arabidaeool, 
  

   Estate, 
  25th 
  March— 
  29th 
  April 
  1913. 
  

  

  2. 
  Monacrostichus 
  crabroniformis, 
  sp. 
  n. 
  

  

  -A 
  very 
  distinct 
  species, 
  which 
  shows 
  the 
  characters 
  of 
  my 
  genus 
  Monacrostichus 
  

   (see 
  Philippine 
  Journal 
  of 
  Science, 
  viii, 
  1913, 
  p. 
  322), 
  having 
  long 
  and 
  porrect 
  

   antennae 
  and 
  the 
  abdomen 
  club-shaped 
  ; 
  but 
  the 
  front 
  femora 
  are 
  not 
  spinose 
  beneath. 
  

  

  (J. 
  Length 
  of 
  body, 
  5'5 
  mm 
  ; 
  of 
  antenna, 
  1 
  -5 
  mm. 
  

  

  Head 
  partly 
  yellow; 
  occiput 
  black, 
  with 
  a 
  narrow 
  complete 
  yellow 
  circle 
  around 
  

   the 
  eyes 
  ; 
  frons 
  brown, 
  with 
  a 
  yellow 
  spot 
  near 
  the 
  vertex 
  on 
  each 
  side 
  of 
  the 
  ocelli, 
  

   and 
  a 
  small 
  arcuate 
  yellow 
  band 
  above 
  the 
  lunula, 
  which 
  is 
  black 
  ; 
  cheeks 
  small 
  and 
  

   yellow, 
  face 
  wholly 
  shining 
  black 
  ; 
  jowls 
  yellow, 
  with 
  a 
  dull 
  black 
  spot. 
  Antennae 
  

   porrect, 
  much 
  longer 
  than 
  the 
  face; 
  the 
  first 
  two 
  joints 
  are 
  yellow, 
  rather 
  long 
  

   and 
  of 
  equal 
  length 
  ; 
  the 
  last 
  joint 
  is 
  a 
  little 
  shorter 
  than 
  the 
  first 
  two 
  joints 
  

   together, 
  dark 
  brown, 
  a 
  little 
  yellowish 
  towards 
  the 
  base 
  "pthe 
  arista 
  is 
  thin, 
  nearly 
  

   as 
  long 
  as 
  the 
  third 
  joint 
  ; 
  palpi 
  yellow. 
  Thorax 
  black, 
  densely 
  punctate, 
  with 
  the 
  

   following 
  markings 
  yellow 
  : 
  — 
  humeral 
  callosities 
  ; 
  a 
  narrow 
  stripe 
  along 
  the 
  transverse 
  

   suture, 
  broadly 
  interrupted 
  towards 
  the 
  middle; 
  a 
  fascia 
  on 
  the 
  mesopleura, 
  

   extending 
  from 
  the 
  transverse 
  suture, 
  where 
  it 
  is 
  in 
  contact 
  with 
  the 
  dorsal 
  stripe, 
  

   to 
  the 
  upper 
  part 
  of 
  the 
  sternopleura, 
  and 
  there 
  forming 
  a 
  very 
  small 
  dot 
  ; 
  and 
  a 
  broad 
  

   spot 
  on 
  the 
  hypopleura. 
  Scutellum 
  entirely 
  yellow, 
  with 
  a 
  narrow 
  black 
  band 
  at 
  the 
  

   base. 
  Chaetotaxy 
  : 
  there 
  are 
  no 
  praescutellar 
  bristles, 
  and 
  the 
  anterior 
  supra-alar 
  

  

  