﻿106 
  

  

  the 
  stunted 
  bushes 
  and 
  ferns, 
  at 
  an 
  elevation 
  of 
  about 
  2500 
  feet, 
  

   along 
  the 
  path 
  on 
  the 
  southern 
  ridge 
  leading 
  up 
  to 
  the 
  summit 
  of 
  

   Mt. 
  Konahuanui, 
  Oahu. 
  On 
  account 
  of 
  the 
  general 
  sweeping 
  by 
  

   the 
  insect 
  net, 
  when 
  these 
  were 
  caught, 
  it 
  was 
  impossible 
  to 
  de- 
  

   termine 
  their 
  food-plant. 
  It 
  is 
  hoped 
  that 
  at 
  some 
  future 
  time 
  

   further 
  observations 
  may 
  be 
  made 
  at 
  this 
  same 
  locality 
  and 
  more 
  

   learned 
  of 
  this 
  remarkable 
  insect. 
  

  

  Life 
  History 
  and 
  Notes 
  on 
  the 
  Pink-winged 
  Tryxalid 
  (Atracto- 
  

   morpha 
  crenaticeps 
  Blanchard). 
  

  

  By 
  Otto 
  H. 
  Swezey. 
  

  

  This 
  grasshopper 
  is 
  a 
  somewhat 
  recent 
  arrival 
  to 
  the 
  Hawaiian 
  

   Islands. 
  It 
  probably 
  came 
  from 
  Australia, 
  as 
  it 
  occurs 
  there 
  and 
  

   also 
  in 
  New 
  Guinea. 
  It 
  has 
  been 
  seen 
  in 
  and 
  around 
  Honolulu 
  

   for 
  several 
  years, 
  and 
  is 
  probably 
  generally 
  spread 
  thruout 
  

   Oahu 
  ; 
  but 
  has 
  not 
  as 
  yet 
  been 
  seen 
  on 
  the 
  other 
  islands 
  of 
  the 
  

   group. 
  It 
  has 
  not 
  as 
  yet 
  become 
  much 
  of 
  a 
  pest, 
  altho 
  it 
  is 
  

   strictly 
  a 
  vegetable 
  feeder. 
  It 
  is 
  not, 
  however, 
  a 
  grass 
  feeder 
  

   particularly, 
  but 
  feeds 
  upon 
  most 
  all 
  kinds 
  of 
  garden 
  plants 
  and 
  

   weeds, 
  without 
  much 
  particular 
  choice. 
  

  

  This 
  species 
  is 
  dimorphic 
  as 
  regards 
  color, 
  there 
  being 
  a 
  green 
  

   form 
  and 
  a 
  grey 
  form. 
  This 
  applies 
  to 
  both 
  sexes. 
  Probably 
  

   the 
  numbers 
  of 
  each 
  form 
  are 
  about 
  equal 
  ; 
  but 
  locally 
  sometimes 
  

   one 
  form 
  is 
  the 
  more 
  numerous 
  and 
  sometimes 
  the 
  other. 
  This 
  

   dim.orphism 
  appears 
  as 
  early 
  as 
  the 
  second 
  instar 
  of 
  the 
  nymph 
  ; 
  

   but 
  is 
  not 
  constant 
  thru 
  the 
  succeeding 
  instars; 
  as 
  there 
  may 
  

   be 
  several 
  changes 
  before 
  the 
  final 
  molt. 
  This 
  is 
  shown 
  in 
  the 
  

   following 
  table, 
  which 
  is 
  the 
  record 
  of 
  nymphs 
  that 
  were 
  captured 
  

   of 
  various 
  ages 
  and 
  reared 
  to 
  maturity: 
  

  

  DIMORPHISM 
  OF 
  NYMPHS. 
  

  

  