﻿78 
  

  

  injure 
  the 
  foliage. 
  One 
  pint 
  of 
  the 
  liquid 
  is 
  sufficient 
  for 
  one 
  tree, 
  and 
  

   it 
  may 
  be 
  sprayed 
  on 
  the 
  lower 
  and 
  middle 
  branches 
  and 
  fruit. 
  If 
  

   there 
  is 
  no 
  rain, 
  the 
  bait 
  will 
  last 
  effectively 
  on 
  the 
  trees 
  for 
  about 
  ten 
  

   days. 
  Success 
  largely 
  depends 
  on 
  applying 
  the 
  spray 
  for 
  the 
  first 
  flies, 
  

   as 
  well 
  as 
  for 
  the 
  last 
  ones. 
  

  

  AsHBY 
  (S. 
  F.). 
  Annual 
  Report 
  on 
  the 
  Department 
  of 
  Agriculture 
  

   for 
  the 
  year 
  ended 
  31st 
  March 
  1913. 
  — 
  Jamaica, 
  Kingston, 
  

   1913, 
  p. 
  30. 
  

  

  S. 
  F. 
  Ashby 
  reports 
  that 
  scales 
  have 
  been 
  severe 
  during 
  the 
  drought, 
  

   on 
  orange 
  and 
  grape-fruit. 
  The 
  two 
  most 
  destructive 
  scales 
  were 
  the 
  

   purple 
  mussel 
  scale 
  {Lepidosaphes 
  beckii) 
  and 
  the 
  citrus 
  snow 
  scale 
  

   {Chionaspis 
  citri) 
  on 
  trunks, 
  branches 
  and 
  twigs 
  mainly. 
  Of 
  less 
  

   importance 
  on 
  leaf 
  and 
  fruit, 
  w^ere 
  the 
  red 
  scale 
  (Aspidiotus 
  articulatus) 
  

   and 
  the 
  red 
  spot 
  scale 
  {Chrysomphalus 
  aonidiim). 
  The 
  purple 
  scale 
  

   is 
  widely 
  parasitised 
  by 
  a 
  Chalcid 
  (Aspidiotiphagus 
  citrinus, 
  Crwf)., 
  and 
  

   in 
  w^etter 
  districts 
  by 
  the 
  " 
  red-headed 
  fungus 
  " 
  {Sphaerostilbe 
  cocco- 
  

   phila). 
  

  

  Pierce 
  (W. 
  D.) 
  The 
  Occurrence 
  of 
  a 
  Cotton 
  Boll 
  Weevil 
  in 
  Arizona. 
  — 
  

  

  Jl. 
  Agric. 
  Research, 
  Washington, 
  i, 
  no. 
  2, 
  10th 
  Nov. 
  1913, 
  

   pp. 
  89-96, 
  9 
  figs. 
  1 
  pi. 
  

  

  In 
  February 
  1913, 
  an 
  insect 
  resembling 
  the 
  cotton 
  boll 
  weevil 
  was 
  

   found 
  breeding 
  in 
  the 
  bolls 
  of 
  a 
  wild 
  shrub 
  known 
  as 
  Thurheria 
  

   thespesioides 
  in 
  Ventana 
  Canyon, 
  Arizona. 
  In 
  May, 
  the 
  author 
  obtained 
  

   a 
  large 
  quantity 
  of 
  heavily 
  infested 
  bolls 
  of 
  Thurheria 
  from 
  the 
  lower 
  

   part 
  of 
  Stone 
  Cabin 
  Canyon, 
  Arizona. 
  A 
  close 
  examination 
  of 
  the 
  

   material 
  disclosed 
  many 
  minor 
  points 
  of 
  difference 
  from 
  the 
  usual 
  

   form 
  of 
  the 
  cotton 
  boll 
  weevil, 
  Anthonomus 
  grandis, 
  Boh. 
  In 
  

   addition 
  to 
  these 
  differences 
  of 
  structure, 
  certain 
  differences 
  of 
  habit 
  

   were 
  noted 
  ; 
  it 
  was 
  found, 
  however, 
  that 
  A. 
  grandis 
  would 
  feed 
  upon 
  

   Thurheria, 
  while 
  the 
  Arizona 
  species 
  w^ould 
  equally 
  feed 
  on 
  cotton 
  ; 
  

   and 
  it 
  was 
  possible 
  to 
  obtain 
  crosses 
  of 
  the 
  tw^o 
  forms. 
  It 
  is, 
  therefore, 
  

   decided 
  to 
  regard 
  the 
  two 
  as 
  being 
  merely 
  different 
  varieties 
  of 
  the 
  

   same 
  species. 
  For 
  the 
  Arizona 
  variety 
  the 
  name, 
  Anthonomus 
  grandis 
  

   thurheriae, 
  var. 
  n., 
  is 
  proposed. 
  A 
  systematic 
  description 
  and 
  an 
  

   account 
  of 
  the 
  hfe-history 
  are 
  given. 
  

  

  The 
  Arizona 
  weevil 
  may 
  be 
  able 
  to 
  cover 
  considerable 
  distances 
  by 
  

   flight, 
  especially 
  if 
  compelled 
  to 
  seek 
  sustenance 
  elsewhere. 
  It 
  will, 
  

   however, 
  probably 
  cleave 
  to 
  its 
  native 
  food-plant 
  so 
  long 
  as 
  this 
  

   gives 
  sufficiently 
  abundant 
  food, 
  but 
  should 
  the 
  supply 
  for 
  any 
  reason 
  

   become 
  scarce, 
  it 
  is 
  to 
  be 
  feared 
  that 
  the 
  w^eevil 
  will 
  take 
  to 
  cotton, 
  to 
  

   which 
  it 
  would 
  do 
  considerable 
  damage. 
  It 
  is 
  thought 
  that 
  a 
  whole- 
  

   sale 
  destruction 
  of 
  the 
  native 
  food-plant 
  might 
  merely 
  cause 
  the 
  insect 
  

   to 
  turn 
  its 
  attention 
  to 
  cotton. 
  The 
  matter 
  is 
  now 
  under 
  investiga- 
  

   tion, 
  but 
  at 
  present 
  it 
  is 
  the 
  author's 
  opinion 
  that 
  the 
  safest 
  plan 
  is 
  to 
  

   preserve 
  the 
  status 
  quo 
  of 
  the 
  weevil 
  in 
  the 
  mountains. 
  An 
  intro- 
  

   duction 
  of 
  parasites 
  from 
  the 
  cotton 
  boll 
  weevil 
  would 
  be 
  of 
  consider- 
  

   able 
  assistance 
  in 
  reducing 
  the 
  Arizona 
  weevil, 
  and 
  w^ould 
  not 
  cause 
  

   its 
  dispersal. 
  

  

  The 
  cotton 
  boll 
  weevil 
  has 
  never 
  been 
  able 
  to 
  invade 
  successfully 
  

  

  