﻿348 
  REPORT 
  OF 
  NEW 
  JERSEY 
  STATE 
  MUSEUM. 
  

  

  G. 
  luteola 
  Miill. 
  The 
  elm-leaf 
  beetle; 
  common 
  throughout 
  the 
  State, 
  and 
  

   usually 
  more 
  or 
  less 
  injurious 
  to 
  city 
  shade 
  trees. 
  There 
  is 
  only 
  a 
  

   single 
  brood 
  in 
  most 
  of 
  the 
  State, 
  and 
  thorough 
  spraying 
  with 
  

   arsenate 
  of 
  lead, 
  1 
  lb. 
  in 
  20 
  gallons 
  of 
  water, 
  will 
  prevent 
  injury. 
  One 
  

   spraying 
  should 
  be 
  made 
  when 
  the 
  beetles 
  first 
  begin 
  to 
  feed, 
  the 
  

   second 
  when 
  the 
  eggs 
  begin 
  to 
  hatch, 
  and 
  the 
  effort 
  should 
  then 
  be 
  

   to 
  hit 
  the 
  underside 
  of 
  the 
  leaves. 
  

  

  MONOXIA 
  Lee. 
  

  

  M. 
  puncticollis 
  Say. 
  On 
  salt 
  meadows, 
  from 
  the 
  Passaic 
  to 
  Cape 
  May 
  

   VI, 
  VII; 
  usually 
  not 
  rare; 
  strictly 
  maritime. 
  

  

  DIABROTICA 
  Chev. 
  

  

  Fig. 
  

  

  -Spotted 
  cucumber 
  beetle, 
  Diabrotica 
  i2-punctata: 
  a, 
  egg; 
  h, 
  larva; 
  

   holes 
  drilled 
  in 
  corn 
  stalks; 
  d, 
  pupa; 
  e, 
  adult: 
  all 
  enlarged. 
  

  

  D. 
  12-punctata 
  Oliv. 
  Common 
  throughout 
  the 
  State 
  IV-X 
  on 
  a 
  great 
  

   variety 
  of 
  plants 
  and 
  sometimes 
  injuring 
  cucurbs; 
  larva 
  in 
  roots 
  of 
  

   corn 
  and 
  grasses. 
  

  

  D. 
  vittata 
  Fab. 
  The 
  "striped 
  cucumber 
  beetle"; 
  throughout 
  the 
  State; 
  

   common 
  and 
  often 
  seriously 
  injurious 
  to 
  cucurbs. 
  The 
  beetle 
  eats 
  

   into 
  the 
  stem 
  at 
  the 
  surface, 
  the 
  larva 
  mines 
  in 
  it 
  a 
  little 
  under- 
  

   ground. 
  Most 
  of 
  the 
  injury 
  is 
  done 
  by 
  the 
  beetles, 
  which 
  attack 
  the 
  

   plants 
  soon 
  after 
  they 
  are 
  up, 
  and 
  a 
  great 
  variety 
  of 
  methods 
  are 
  

   employed 
  to 
  prevent 
  it. 
  Sometimes 
  carbolized 
  lime 
  or 
  lime 
  and 
  tur- 
  

   pentine 
  are 
  applied 
  in 
  the 
  hill, 
  or 
  a 
  dead 
  fish, 
  or 
  freshly 
  ground 
  bone. 
  

  

  