﻿378 
  

  

  GUY 
  A. 
  K. 
  MARSHALL. 
  

  

  Corigetus 
  bidentulus, 
  Fst. 
  

  

  Mr. 
  H. 
  Stevens 
  records 
  this 
  species 
  as 
  a 
  serious 
  pest 
  of 
  tea 
  at 
  Silonobari, 
  Assam, 
  

   but 
  nothing 
  is 
  known 
  as 
  to 
  its 
  life-history. 
  

  

  The 
  general 
  appearance 
  of 
  the 
  insect 
  is 
  shown 
  in 
  the 
  accompanying 
  figure 
  

   (fig. 
  2). 
  The 
  upper 
  side 
  colouring 
  varies 
  from 
  greyish 
  brown 
  to 
  dark 
  brown, 
  with 
  a 
  

  

  Fig. 
  2. 
  Corigetus 
  bidentulus, 
  Fst. 
  

  

  very 
  irregular 
  and 
  variable 
  brownish 
  black 
  band 
  behind 
  the 
  middle, 
  the 
  lighter 
  

   markings 
  being 
  pale 
  metallic 
  green. 
  The 
  lower 
  surface 
  is 
  usually 
  grey 
  with 
  a 
  

   sprinkling 
  of 
  metallic 
  green 
  scales, 
  but 
  may 
  be 
  either 
  entirely 
  grey 
  or 
  entirely 
  green. 
  

   Assam 
  : 
  Silonibari, 
  N. 
  Lakhimpur 
  (H. 
  Stevens) 
  ; 
  Naga 
  Hills, 
  Patkai 
  Hills 
  and 
  

   Manipur 
  (W 
  . 
  Doherty). 
  Buema 
  : 
  Bhamo 
  and 
  Teinzo 
  (L. 
  Fea). 
  

  

  Rhynchaenus 
  (Orchestes) 
  mangiferae, 
  sp. 
  nov. 
  

  

  Light 
  reddish 
  yellow, 
  the 
  elytra 
  rather 
  darker 
  round 
  the 
  scutellum, 
  along 
  the 
  

   suture 
  and 
  along 
  the 
  lateral 
  margin 
  ; 
  thinly 
  clothed 
  with 
  recumbent 
  white 
  hairs, 
  

  

  Fig. 
  3. 
  Rhynchaenus 
  mangiferae, 
  sp. 
  n. 
  

  

  with 
  a 
  few 
  black 
  ones 
  interspersed, 
  the 
  white 
  hairs 
  rather 
  thinner 
  in 
  places, 
  giving 
  

   the 
  appearance 
  of 
  faint 
  banding. 
  

  

  Head 
  with 
  the 
  eyes 
  separated 
  by 
  a 
  very 
  narrow 
  line 
  covered 
  with 
  white 
  hairs 
  and 
  

   with 
  a 
  band 
  of 
  elongate 
  white 
  scales 
  below 
  the 
  eyes. 
  Rostrum 
  rather 
  short, 
  about 
  

  

  