﻿639 
  

  

  fungus 
  diseases, 
  while 
  58 
  were 
  infested 
  by 
  Eriophyes 
  (Phytoptus) 
  

   vitis 
  and 
  three 
  by 
  other 
  pests. 
  

  

  P. 
  S. 
  noneneHie 
  nenapHaro 
  luenKonpflfla. 
  [The 
  appearance 
  of 
  

   Lymantria 
  dispar 
  in 
  Turkestan.] 
  — 
  « 
  TypKeciaHCKOe 
  CenbCKOe 
  Xo- 
  

   8flilCTB0.» 
  [Agriculture 
  of 
  Turkestan], 
  Tashkent, 
  no. 
  6, 
  June 
  

   1914, 
  pp. 
  605-606. 
  

  

  Caterpillars 
  of 
  Lymantria 
  dispar 
  have 
  appeared 
  in 
  great 
  numbers 
  

   in 
  the 
  Yamskaja 
  rural 
  district 
  of 
  Dzhisak. 
  Previous 
  outbreaks 
  of 
  

   these 
  pests 
  have 
  always 
  occurred 
  for 
  one 
  summer 
  only, 
  after 
  which 
  

   they 
  disappeared 
  for 
  a 
  few 
  years 
  ; 
  usually 
  great 
  quantities 
  of 
  pupae, 
  

   infested 
  with 
  parasites, 
  were 
  found 
  everywhere 
  on 
  the 
  hedges 
  near 
  

   the 
  orchards. 
  

  

  Hewitt 
  (T. 
  R.). 
  The 
  Larva 
  and 
  Puparium 
  of 
  the 
  Frit-fly. 
  — 
  Scient. 
  

   Proc. 
  R. 
  Dublin 
  Soc, 
  Dublin, 
  xiv, 
  no. 
  23, 
  June 
  1914, 
  pp. 
  313-316. 
  

   1 
  pi. 
  [Received 
  9th 
  November 
  1914.] 
  

  

  A 
  detailed 
  description 
  of 
  the 
  early 
  stages 
  of 
  the 
  frit-fly, 
  Oscinisfrit, 
  

   L., 
  one 
  of 
  the 
  worst 
  cereal 
  pests 
  in 
  Europe, 
  is 
  given 
  ; 
  it 
  is 
  common 
  in 
  

   Great 
  Britain, 
  and 
  in 
  recent 
  years 
  has 
  been 
  reported 
  as 
  doing 
  con- 
  

   siderable 
  damage 
  to 
  cereals 
  in 
  several 
  coimties 
  in 
  Ireland. 
  

  

  NoBTHBUP 
  (Z.). 
  Abacterial 
  Disease 
  of 
  the 
  Larvae 
  of 
  the 
  June 
  Beetles, 
  

  

  Lachnosterna 
  spp. 
  — 
  Centbl. 
  f. 
  Bakt. 
  Parasit. 
  u. 
  Infekt.y 
  Jena, 
  xh, 
  

   nos. 
  11-17, 
  30th 
  June 
  1914, 
  pp. 
  321-339, 
  4 
  pis., 
  5 
  figs. 
  

  

  The 
  ravages 
  of 
  " 
  white 
  grubs," 
  the 
  larvae 
  of 
  the 
  May 
  or 
  June 
  beetles, 
  

   Lachnosterna 
  spp., 
  were 
  serious 
  in 
  the 
  U.S.A. 
  during 
  the 
  summer 
  of 
  

   1912. 
  It 
  would 
  appear 
  that 
  these 
  were 
  among 
  the 
  earhest 
  

   recorded 
  insect 
  pests 
  in 
  the 
  United 
  States, 
  having 
  been 
  known 
  for 
  

   upwards 
  of 
  250 
  years, 
  and 
  there 
  is 
  a 
  more 
  or 
  less 
  regular 
  recurrence 
  

   of 
  their 
  activity 
  every 
  few 
  years. 
  The 
  larvae 
  feed 
  upon 
  the 
  roots 
  

   of 
  many 
  plants, 
  cutting 
  them 
  off 
  2 
  inches 
  or 
  more 
  below 
  the 
  

   surface 
  and 
  destroying 
  a 
  great 
  variety 
  of 
  crops. 
  One 
  of 
  these 
  

   insects 
  is 
  a 
  serious 
  pest 
  of 
  sugar-cane 
  in 
  Porto 
  Rico, 
  being 
  chiefly 
  

   destructive 
  in 
  the 
  2nd 
  and 
  3rd 
  years 
  of 
  larval 
  life. 
  No 
  satisfactory 
  

   artificial 
  methods 
  of 
  control 
  have 
  yet 
  been 
  devised 
  in 
  the 
  United 
  States, 
  

   but 
  this 
  paper 
  is 
  intended 
  to 
  draw 
  attention 
  to 
  the 
  possibihty 
  of 
  using 
  

   fungus 
  and 
  bacterial 
  parasites 
  for 
  this 
  purpose. 
  The 
  appearance 
  

   of 
  Lachnosterna 
  larvae 
  attacked 
  by 
  the 
  fungus 
  disease 
  is 
  described. 
  

   Microscopic 
  observation 
  showed 
  that 
  a 
  Micrococcus 
  was 
  present 
  in 
  

   large 
  numbers 
  in 
  infected 
  individuals, 
  and 
  from 
  observations 
  upon 
  

   the 
  isolated 
  Micrococcus 
  it 
  is 
  concluded 
  that 
  this 
  organism 
  must 
  exist 
  

   in 
  the 
  soil, 
  and 
  that 
  the 
  diseased 
  larvae 
  must 
  have 
  become 
  infected 
  

   through 
  some 
  surface 
  injury. 
  Experiments 
  on 
  the 
  infection 
  of 
  soils 
  

   showed 
  that 
  excessive 
  moisture 
  in 
  the 
  soil 
  greatly 
  favours 
  the 
  spread 
  

   of 
  the 
  Micrococcus. 
  Larvae 
  of 
  the 
  genus 
  Allorrhina 
  were 
  found 
  

   experimentally 
  to 
  be 
  more 
  resistant 
  than 
  those 
  of 
  Lachnosterna, 
  though 
  

   the 
  younger 
  the 
  larvae, 
  the 
  less 
  the 
  power 
  of 
  resistance. 
  

  

  The 
  common 
  cockroach, 
  Periplaneta 
  americana, 
  was 
  also 
  found 
  to 
  

   be 
  attacked 
  by 
  the 
  Micrococcus, 
  but 
  the 
  infection 
  apparently 
  limited 
  

   itself 
  to 
  the 
  legs. 
  Attempts 
  to 
  isolate 
  the 
  parasite 
  from 
  naturally 
  

  

  