﻿REPORT 
  OF 
  THE 
  DIRECTOR 
  ICH2 
  39 
  

  

  The 
  false 
  maple 
  scale 
  continues 
  abundant 
  in 
  the 
  vicinity 
  of 
  New 
  

   York 
  City 
  and 
  was 
  a 
  subject 
  of 
  considerable 
  correspondence 
  during 
  

   the 
  summer. 
  The 
  cottony 
  maple 
  scale 
  was 
  also 
  responsible 
  for 
  a 
  

   number 
  of 
  complaints. 
  

  

  Forest 
  pests. 
  The 
  hickory 
  bark 
  beetle 
  has 
  continued 
  its 
  de- 
  

   structive 
  operations 
  in 
  the 
  vicinity 
  of 
  New 
  York 
  City. 
  The 
  

   abundance 
  of 
  this 
  pest 
  and 
  the 
  hearty 
  cooperation 
  of 
  Mr 
  J. 
  James 
  

   de 
  Vyver, 
  of 
  Mount. 
  Vernon, 
  made 
  possible 
  a 
  series 
  of 
  tests 
  for 
  

   the 
  purpose 
  of 
  finding 
  some 
  method 
  which 
  could 
  be 
  relied 
  upon 
  

   to 
  destroy 
  the 
  insect 
  after 
  the 
  beetles 
  had 
  entered 
  the 
  trees. 
  

   Studies 
  in 
  the 
  field 
  showed 
  that 
  in 
  some 
  localities 
  many 
  of 
  the 
  

   grubs 
  died 
  within 
  a 
  few 
  weeks 
  after 
  hatching 
  and 
  before 
  they 
  

   were 
  able 
  to 
  cause 
  material 
  injury. 
  A 
  detailed 
  discussion 
  of 
  this 
  

   work, 
  together 
  with 
  the 
  Entomologist's 
  investigations 
  upon 
  the 
  

   biology 
  of 
  the 
  pest 
  and 
  its 
  natural 
  checks, 
  is 
  given 
  in 
  his 
  annual 
  

   report. 
  

  

  Many 
  of 
  the 
  white 
  pines 
  in 
  the 
  vicinity 
  of 
  Albany 
  have 
  been 
  

   killed 
  in 
  recent 
  years 
  by 
  bark 
  borers. 
  The 
  Entomologist's 
  study 
  

   of 
  the 
  conditions 
  showed 
  that 
  in 
  all 
  probability 
  this 
  attack 
  was 
  

   the 
  outcome 
  of 
  extreme 
  droughts 
  and 
  very 
  low 
  winter 
  tempera- 
  

   tures. 
  Parties 
  suffering 
  from 
  the 
  activities 
  of 
  these 
  pests 
  have 
  

   been 
  advised 
  to 
  cut 
  and 
  burn 
  all 
  infested 
  trees 
  prior 
  to 
  the 
  open- 
  

   ing 
  of 
  another 
  season. 
  

  

  Hosts 
  of 
  Ambrosia 
  beetles 
  belonging 
  to 
  the 
  genus 
  Platypus 
  at- 
  

   tacked 
  freshly 
  sawn, 
  sappy 
  mahogany 
  in 
  the 
  yard 
  of 
  a 
  veneer 
  cut- 
  

   ting 
  company 
  near 
  New 
  York 
  City 
  and 
  inflicted 
  severe 
  loss 
  be- 
  

   sides 
  causing 
  grave 
  apprehensions. 
  An 
  investigation 
  showed 
  

   that 
  the 
  insects 
  originated 
  from 
  a 
  shipload 
  of 
  mahogany 
  from 
  

   Panama. 
  Upon 
  the 
  advice 
  of 
  the 
  Entomologist, 
  the 
  infested 
  

   material 
  was 
  removed 
  and 
  the 
  few 
  insects 
  remaining 
  soon 
  disap- 
  

   peared. 
  

  

  The 
  destructive 
  work 
  of 
  the 
  locust 
  leaf 
  miner, 
  noticed 
  in 
  the 
  

   Entomologist's 
  report, 
  was 
  studied 
  the 
  past 
  season 
  and 
  additional 
  

   information 
  secured 
  in 
  relation 
  to 
  its 
  habits 
  and 
  methods 
  of 
  con- 
  

   trol. 
  The 
  most 
  severe 
  injury, 
  as 
  in 
  191 
  1, 
  resulted 
  from 
  the 
  feed- 
  

   ing 
  of 
  the 
  beetles. 
  

  

  The 
  woolly 
  bark 
  louse 
  of 
  the 
  white 
  pines 
  has 
  been 
  the 
  occasion 
  

   of 
  several 
  complaints 
  during 
  the 
  past 
  summer, 
  and 
  an 
  investiga- 
  

   tion 
  showed 
  that 
  in 
  some 
  instances 
  at 
  least, 
  large 
  trees 
  were 
  seri- 
  

   ously 
  weakened 
  if 
  not 
  destroyed 
  by 
  this 
  insect. 
  

  

  