﻿INSECTS 
  IN 
  SUGAR-CANE 
  PLANTATIONS 
  IN 
  FIJI. 
  

  

  33 
  

  

  The 
  pearly 
  white 
  egg 
  is 
  more 
  nearly 
  spherical 
  than 
  that 
  of 
  S. 
  cinnamomeus, 
  and 
  

   measures 
  *6 
  mm. 
  in 
  length 
  and 
  *4 
  mm. 
  in 
  breadth 
  ; 
  the 
  incubation 
  period 
  is 
  12 
  

   or 
  13 
  days. 
  The 
  larva 
  or 
  wireworm 
  is 
  pale 
  clay-yellow, 
  except 
  for 
  the 
  head, 
  the 
  

   first 
  thoracic 
  segment 
  and 
  the 
  last 
  abdominal 
  segment, 
  which 
  are 
  brown 
  ; 
  the 
  

   full-grown 
  wireworm 
  measures 
  18 
  mm. 
  in 
  length 
  and 
  2*5 
  mm. 
  in 
  breadth, 
  and 
  

   the 
  duration 
  of 
  the 
  larval 
  stage 
  is 
  probably 
  three 
  years 
  or 
  longer. 
  The 
  pupa 
  is 
  

  

  Fig. 
  7 
  

  

  . 
  Lacon 
  stricticollis,, 
  

   Fairm., 
  X 
  4. 
  

  

  typical 
  of 
  the 
  Elateridae, 
  and 
  the 
  blunt 
  posterior 
  angles 
  of 
  the 
  thorax 
  serve 
  to 
  

   identify 
  the 
  pupal 
  stage 
  of 
  this 
  species, 
  as 
  in 
  the 
  other 
  two 
  the 
  posterior 
  angles 
  

   are 
  backwardly 
  produced 
  as 
  sharp 
  teeth. 
  The 
  pupal 
  stage 
  lasts 
  for 
  13 
  or 
  14 
  days. 
  

   The 
  feeding 
  habits 
  of 
  this 
  species 
  seem 
  to 
  be 
  similar 
  to 
  those 
  of 
  S. 
  cinnamomeus, 
  

   and 
  the 
  control 
  measures 
  recommended 
  for 
  that 
  species 
  would 
  be 
  just 
  as 
  effective 
  

   for 
  this 
  one. 
  

  

  The 
  Predaceous 
  Wireworm 
  (Monocrepidius 
  pallipes, 
  Esch.) 
  (fig. 
  8). 
  

  

  This 
  species 
  has 
  been 
  found 
  only 
  in 
  sandy 
  soils 
  in 
  association 
  with 
  the 
  white 
  

   grubs 
  of 
  Rkopaea 
  vestita, 
  and 
  has 
  never 
  been 
  observed 
  attacking 
  cane. 
  The 
  larva 
  

  

  Fig. 
  8, 
  Monocrepidius 
  pallipes, 
  

   Esch., 
  X 
  4. 
  

  

  is 
  very 
  similar 
  in 
  appearance 
  and 
  size 
  to 
  that 
  of 
  Lacon 
  stricticollis, 
  from 
  which 
  it 
  

  

  can 
  be 
  distinguished 
  by 
  the 
  shape 
  of 
  the 
  caudal 
  notch, 
  which 
  in 
  Monocrepidius 
  

  

  (C572) 
  o 
  

  

  