﻿46 
  THE 
  DISPEKSION 
  OF 
  THE 
  GIPSY 
  MOTH. 
  

  

  that 
  year 
  single 
  egg 
  clusters 
  were 
  discovered 
  in 
  each 
  of 
  three 
  locali- 
  

   ties. 
  In 
  the 
  fall 
  of 
  1911, 
  1,789 
  were 
  found 
  in 
  326 
  localities. 
  

  

  The 
  gipsy 
  moth 
  was 
  first 
  found 
  in 
  Hopkinton, 
  Mass., 
  in 
  1905, 
  and 
  

   the 
  writer 
  is 
  indebted 
  to 
  Mr. 
  G. 
  A. 
  Sands, 
  of 
  the 
  Massachusetts 
  State 
  

   forester's 
  office, 
  for 
  data 
  concerning 
  this 
  town. 
  During 
  the 
  winter 
  of 
  

   1906-7, 
  267 
  egg 
  clusters 
  Avere 
  secured 
  from 
  39 
  different 
  localities. 
  

   In 
  1907-8, 
  1,417 
  egg 
  clusters 
  Avere 
  secured 
  in 
  30 
  localities. 
  In 
  1908-9, 
  

   4,283 
  egg 
  clusters 
  were 
  found 
  in 
  90 
  colonies. 
  In 
  1909-10, 
  2,124 
  egg 
  

   clusters 
  were 
  treated 
  in 
  70 
  localities. 
  In 
  1910-11, 
  3,448 
  egg 
  clusters 
  

   were 
  found 
  in 
  80 
  localities. 
  In 
  some 
  of 
  these 
  colonies 
  no 
  egg 
  

   clusters 
  were 
  located 
  during 
  the 
  year 
  following 
  the 
  first 
  examina- 
  

   tion, 
  as 
  the 
  trees 
  were 
  burlaped, 
  examined 
  during 
  the 
  summer, 
  

   and 
  the 
  colonies 
  exterminated. 
  In 
  other 
  places 
  small 
  numbers 
  of 
  

   egg 
  clusters 
  were 
  found 
  from 
  year 
  to 
  year, 
  but 
  each 
  year 
  it 
  was 
  

   possible 
  to 
  obtain 
  them 
  in 
  regions 
  where 
  they 
  had 
  not 
  been 
  known 
  

   previously. 
  

  

  The 
  original 
  colony 
  in 
  Hopkinton 
  was 
  southeast 
  of 
  the 
  village, 
  

   near 
  the 
  roadside. 
  The 
  following 
  year 
  infested 
  places 
  were 
  found 
  

   near 
  the 
  center 
  of 
  the 
  town, 
  and 
  a 
  few 
  were 
  located 
  near 
  the 
  borders 
  

   of 
  the 
  adjoining 
  towns. 
  The 
  next 
  year 
  egg 
  clusters 
  were 
  found 
  well 
  

   scattered 
  throughout 
  the 
  town, 
  especially 
  in 
  the 
  residential 
  section, 
  

   and 
  this 
  condition 
  prevails 
  at 
  the 
  present 
  time. 
  Owing 
  to 
  the 
  loca- 
  

   tion 
  of 
  the 
  various 
  infestations, 
  it 
  is 
  highly 
  improbable 
  that 
  the 
  

   insects 
  could 
  have 
  spread 
  by 
  artificial 
  means. 
  For 
  the 
  past 
  two 
  

   j^ears 
  very 
  little 
  work 
  has 
  been 
  done 
  in 
  this 
  town 
  to 
  suppress 
  the 
  

   moth. 
  

  

  The 
  data 
  for 
  several 
  towns 
  following 
  were 
  supplied 
  by 
  Mr. 
  H. 
  B. 
  

   Ramsey, 
  an 
  agent 
  of 
  the 
  Masachusetts 
  State 
  forester, 
  and 
  the 
  writer 
  

   is 
  indebted 
  to 
  him 
  for 
  this 
  and 
  other 
  valuable 
  information 
  fur- 
  

   nished. 
  

  

  The 
  condition 
  in 
  Westboro, 
  a 
  town 
  northwest 
  of 
  Hopkinton, 
  was 
  

   not 
  so 
  bad 
  in 
  1906-7, 
  there 
  having 
  been 
  found 
  at 
  that 
  time 
  only 
  seven 
  

   colonies. 
  The 
  number 
  of 
  colonies, 
  however, 
  steadily 
  increased. 
  In 
  

   1910-11, 
  116 
  were 
  located, 
  containing 
  846 
  egg 
  clusters, 
  while 
  in 
  

   1911-12, 
  1,897 
  egg 
  clusters 
  were 
  found 
  in 
  214 
  localities. 
  

  

  Directly 
  nortliwest 
  of 
  Westboro 
  is 
  the 
  town 
  of 
  Northboro, 
  in 
  which 
  

   no 
  egg 
  clusters 
  were 
  found 
  until 
  the 
  winter 
  of 
  1909-10, 
  although 
  

   three 
  pupal 
  cases 
  were 
  secured 
  during 
  the 
  previous 
  year. 
  Northboro 
  

   is 
  west 
  of 
  Marlboro, 
  Avhich 
  was 
  found 
  infested 
  in 
  1905, 
  and 
  if 
  dis- 
  

   persion 
  of 
  the 
  species 
  was 
  equal 
  in 
  all 
  directions, 
  should 
  have 
  become 
  

   infested 
  rapidly. 
  During 
  the 
  winter 
  of 
  1909-10 
  five 
  colonies 
  were 
  

   found, 
  14 
  egg 
  clusters 
  being 
  treated 
  in 
  them. 
  They 
  were 
  located 
  

   in 
  the 
  southeastern 
  and 
  north-central 
  parts 
  of 
  the 
  town. 
  The 
  fol- 
  

   lowing 
  year 
  95 
  colonies 
  were 
  secured, 
  and 
  in 
  these 
  341 
  egg 
  clusters 
  

   were 
  treated. 
  In 
  1911-12, 
  1,421 
  egg 
  clusters 
  were 
  found 
  on 
  180 
  

  

  