﻿170 
  

  

  ning 
  of 
  June 
  ; 
  in 
  the 
  last 
  weeks 
  of 
  June 
  the 
  eggs 
  are 
  laid 
  and 
  the 
  adults 
  

   disappear. 
  

  

  The 
  damage 
  consists 
  in 
  the 
  mites 
  sucking 
  the 
  sap 
  of 
  the 
  leaves, 
  

   which 
  results 
  in 
  the 
  appearance 
  of 
  white 
  patches, 
  which 
  become 
  so 
  

   numerous 
  that 
  often 
  the 
  whole 
  leaf 
  turns 
  white 
  and 
  finally 
  falls 
  off, 
  

   as 
  do 
  also 
  the 
  berries. 
  

  

  As 
  a 
  remedy, 
  the 
  author 
  suggests 
  the 
  use 
  of 
  lime-sulphur 
  spray 
  

   against 
  the 
  eggs 
  in 
  early 
  spring. 
  

  

  KuRDJUMov 
  (N. 
  v.). 
  r/iaBHtiiiuifl 
  HactKOMbifl, 
  Bpeflflmifl 
  aepHO- 
  

  

  BblM-b 
  SJiaKaMl) 
  81) 
  cpeAHeil 
  M 
  IOWHOM 
  PoCCIm. 
  [The 
  more 
  

   important 
  insects 
  injurious 
  to 
  grain-crops 
  in 
  Middle 
  and 
  South 
  

   Russia.]— 
  Tpyflbi 
  flonTaBCKOM 
  C.-X. 
  OnbiTHOM 
  CiaHuiii. 
  OTfltni) 
  

  

  cenbCK0-X03flMCTBeHH0il 
  3HT0M0J10riM. 
  [Studies 
  from 
  the 
  Poltava 
  

   Agricultural 
  Experiment 
  Station, 
  No. 
  17. 
  Department 
  of 
  

   Agricultural 
  Entomology, 
  No. 
  VI.] 
  Poltava, 
  1913, 
  119 
  pp., 
  

   49 
  figs., 
  7 
  col. 
  plates. 
  

  

  In 
  a 
  short 
  preface 
  to 
  his 
  book 
  the 
  author 
  points 
  out 
  that 
  the 
  absence 
  

   in 
  the 
  Russian 
  hterature 
  of 
  a 
  work 
  devoted 
  to 
  insect 
  pests 
  of 
  grain 
  

   crops 
  led 
  him 
  to 
  undertake 
  this 
  task. 
  The 
  book 
  deals 
  only 
  with 
  

   insects 
  injurious 
  to 
  standing 
  crops, 
  the 
  pests 
  of 
  grain 
  in 
  warehouses 
  

   and 
  stores 
  not 
  being 
  included. 
  

  

  The 
  first 
  chapter 
  of 
  the 
  book 
  consists 
  of 
  synoptical 
  tables 
  of 
  identi- 
  

   fication 
  of 
  various 
  insects 
  according 
  to 
  the 
  stage 
  of 
  the 
  pests 
  and 
  the 
  

   parts 
  of 
  plants 
  injured 
  by 
  them 
  ; 
  the 
  tables 
  contain 
  (1) 
  insects 
  and 
  

   their 
  stages 
  injurious 
  to 
  sown 
  grains 
  and 
  roots 
  of 
  grain 
  ; 
  (2) 
  those 
  

   injurious 
  to 
  sprouts 
  of 
  young 
  plants 
  ; 
  (3) 
  those 
  injurious 
  to 
  leaves 
  

   and 
  stems 
  of 
  plants 
  in 
  a 
  more 
  advanced 
  stage 
  of 
  growth 
  ; 
  and 
  (4) 
  

   insects 
  and 
  their 
  stages 
  injurious 
  to 
  grain 
  in 
  the 
  ear. 
  The 
  author 
  goes 
  

   on 
  to 
  deal 
  separately 
  with 
  various 
  orders 
  of 
  insects, 
  starting 
  with 
  

   Orthoptera, 
  and 
  describes 
  the 
  habits 
  of 
  the 
  following 
  Acridiidae 
  : 
  — 
  

   Locusta 
  {Pachytylus) 
  migratorius, 
  L., 
  L. 
  danica, 
  L., 
  Caliptamus 
  italicus^ 
  

   L., 
  Oedaleus 
  mgrofasciatus, 
  de 
  G., 
  and 
  Stauronotus 
  moroccanus, 
  Thunb. 
  

   He 
  then 
  passes 
  to 
  the 
  remedies 
  against 
  them 
  ; 
  ploughing 
  in 
  autumn 
  

   to 
  destroy 
  the 
  egg-masses, 
  insecticides 
  (which 
  he 
  considers 
  to 
  be 
  the 
  

   most 
  important 
  remedy 
  against 
  the 
  larvae), 
  poisoned 
  food, 
  hopper- 
  

   dozers, 
  crushing, 
  burning, 
  and 
  driving 
  into 
  trenches. 
  He 
  further 
  

   deals 
  in 
  the 
  same 
  way 
  with 
  Gryllotalpa 
  gryllotalpa, 
  L., 
  and 
  devotes 
  

   the 
  third 
  chapter 
  of 
  his 
  book 
  to 
  various 
  species 
  of 
  Thrips. 
  Limothrips 
  

   denticornis, 
  Hal. 
  {Thrips 
  secalina, 
  Lind.), 
  a 
  description 
  of 
  which 
  is 
  

   given, 
  occurs 
  on 
  rye 
  ; 
  it 
  winters 
  in 
  the 
  imago 
  stage 
  on 
  wild 
  grasses, 
  

   but 
  only 
  the 
  female 
  survives, 
  the 
  male 
  perishing 
  during 
  the 
  summer. 
  

   The 
  injury 
  done 
  by 
  the 
  larva 
  and 
  imago 
  is 
  described, 
  but 
  the 
  author 
  

   is 
  unable 
  to 
  suggest 
  any 
  remedies, 
  as 
  the 
  reploughing 
  or 
  burning 
  of 
  

   the 
  stubble 
  would 
  prove 
  of 
  no 
  use, 
  owing 
  to 
  the 
  absence 
  of 
  the 
  insects 
  

   from 
  the 
  latter 
  in 
  autumn 
  and 
  winter. 
  Stenothrips 
  graminum, 
  Uzel, 
  

   is 
  usually 
  found 
  in 
  oat 
  fields 
  ; 
  the 
  author 
  suggests 
  as 
  a 
  preventive 
  

   not 
  to 
  sow 
  early 
  oats, 
  these 
  being 
  also 
  less 
  productive. 
  This 
  species 
  

   winters 
  as 
  a 
  larva 
  deep 
  in 
  the 
  earth 
  ; 
  therefore 
  ploughing 
  in 
  the 
  

   stubble 
  would 
  not 
  be 
  effective. 
  Haplothrips 
  aculeata, 
  F. 
  {Thrips 
  

   frumentarius, 
  Beling), 
  is 
  often 
  mistaken 
  for 
  H. 
  tritici, 
  Kurdjumov 
  ; 
  

   the 
  insect 
  winters 
  in 
  the 
  imago 
  stage 
  and 
  attacks 
  rye-crops 
  early 
  in 
  

  

  