﻿37C 
  

  

  Two 
  generations 
  of 
  Eriocampa 
  adumbrata, 
  Klug, 
  and 
  Nematus 
  

   ventricosiis, 
  L., 
  were 
  observed 
  on 
  gooseberries 
  and 
  currants. 
  Aphis 
  

   idaei, 
  Goot., 
  was 
  found 
  on 
  raspberries, 
  the 
  branches 
  attacked 
  by 
  the 
  

   lice 
  producing 
  no 
  fruits 
  ; 
  Myzus 
  ribis, 
  L., 
  on 
  leaves 
  of 
  black 
  currants 
  ; 
  

   Rhopcdosiphum 
  ribis, 
  Koch., 
  on 
  leaves 
  of 
  red 
  currants 
  ; 
  Scopelosoma 
  

   sateUitia, 
  L., 
  was 
  found 
  on 
  raspberries 
  and 
  apples, 
  the 
  caterpillars 
  being 
  

   very 
  voraciou 
  '. 
  The 
  eggs 
  of 
  Rhynchites 
  auratus, 
  Scop., 
  were 
  found 
  in 
  

   cherries 
  on 
  26th 
  June, 
  the 
  larvae 
  being 
  full-grown 
  by 
  5th 
  August. 
  

   Phyllobius 
  injured 
  mostly 
  leaves 
  and 
  blossoms 
  of 
  cherries, 
  but 
  were 
  

   also 
  found 
  on 
  apples, 
  pears, 
  plums 
  and 
  raspberries, 
  the 
  most 
  common 
  

   species 
  being 
  P. 
  piri, 
  L. 
  Anihonomus 
  rubi, 
  Hbst., 
  is 
  injuring 
  the 
  buds 
  

   of 
  raspberries 
  to 
  an 
  increasing 
  extent. 
  The 
  following 
  enemies 
  of 
  

   Psylla 
  were 
  noticed 
  : 
  Syrphid 
  larvae 
  destroyed 
  the 
  larvae 
  and 
  nymphs 
  ; 
  

   Anthocoris 
  nemorum, 
  L.,fed 
  on 
  the 
  eggs, 
  larvae 
  and 
  nymphs; 
  Dolerus 
  

   niger, 
  KL, 
  devoured 
  the 
  larvae. 
  

  

  Baranov 
  (A. 
  D.). 
  rioneBbie 
  BpeflMie/lM. 
  [Pests 
  of 
  fields 
  crops.]— 
  

   MaTepiajibi 
  no 
  MsyHeHiio 
  epeAHbixii 
  HactKOMbix'b 
  Mockobckom 
  

   ry6epHiH. 
  [Materials 
  for 
  the 
  study 
  of 
  the 
  injurious 
  insects 
  of 
  the 
  

   govt, 
  of 
  Moscow], 
  Moscow, 
  v, 
  1914, 
  pp. 
  112-130. 
  

  

  The 
  following 
  insect 
  pests 
  have 
  appeared 
  on 
  field 
  crops 
  in 
  the 
  govern- 
  

   ment 
  during 
  the 
  year 
  under 
  review 
  : 
  — 
  (1) 
  On 
  winter-sown 
  grain 
  crops 
  : 
  

   Osdnellafrit, 
  L., 
  Mayetiola 
  (Cecidomyia) 
  destructor, 
  Say, 
  Euxoa 
  segetum, 
  

   SchifE., 
  Agriotes 
  lineatus, 
  L., 
  Ochsenheimeria 
  taurella, 
  Schiff., 
  Hylemyia 
  

   coarctata, 
  Fall., 
  and 
  Anthothrips 
  aculeata. 
  (2) 
  On 
  summer-sown 
  grain 
  

   crops 
  : 
  Osdnellafrit, 
  Phyllotreta 
  vittula, 
  Redt., 
  and 
  Agriotes 
  lineatus, 
  L. 
  

   (3) 
  On 
  forage 
  grasses 
  : 
  Sitones 
  lineatus, 
  L., 
  Agriotes 
  lineatus, 
  L., 
  Apion 
  

   apricans, 
  Hbst., 
  Phytonomus 
  sp., 
  and 
  Siphonophora 
  pisi, 
  Kalt. 
  (4) 
  

   On 
  root 
  crops 
  (turnips) 
  : 
  Phyllotreta 
  sp. 
  The 
  author 
  has 
  conducted 
  

   special 
  studies 
  on 
  the 
  biology 
  of 
  some 
  of 
  these 
  pests, 
  which 
  he 
  proceeds 
  

   to 
  describe. 
  

  

  Sitones 
  lineatus 
  has 
  done 
  great 
  damage 
  to 
  leguminous 
  plants, 
  

  

  especially 
  clover, 
  vetches 
  and 
  peas, 
  in 
  the 
  government 
  of 
  Moscow 
  

  

  during 
  the 
  last 
  few 
  years, 
  the 
  spring 
  seedUngs 
  being 
  especially 
  affected. 
  

  

  The 
  weevils 
  feed 
  on 
  the 
  leaves, 
  etc., 
  while 
  the 
  larvae 
  feed 
  on 
  the 
  roots 
  

  

  and 
  chiefly 
  on 
  the 
  small 
  bulbs 
  formed 
  by 
  nitrogen-collecting 
  bacteria. 
  

  

  Some 
  other 
  species 
  of 
  Sitones 
  are 
  also 
  found 
  in 
  small 
  numbers, 
  but 
  the 
  

  

  following 
  notes 
  refer 
  only 
  to 
  S. 
  lineatus. 
  The 
  insect 
  winters 
  in 
  the 
  

  

  imago 
  stage 
  just 
  beneath 
  the 
  surface 
  of 
  the 
  soil, 
  emerging 
  in 
  the 
  latter 
  

  

  half 
  of 
  April. 
  The 
  author 
  reports 
  that 
  the 
  weevils 
  appeared 
  in 
  the 
  

  

  spring 
  of 
  1912 
  on 
  some 
  clover 
  sown 
  in 
  the 
  fields 
  of 
  the 
  Moscow 
  

  

  Agricultural 
  Institute 
  and 
  after 
  a 
  few 
  days 
  only 
  single 
  plants 
  remained 
  ; 
  

  

  in 
  1913, 
  various 
  sorts 
  of 
  peas 
  attracted 
  the 
  beetles, 
  3 
  to 
  5 
  individuals 
  

  

  feeding 
  on 
  each 
  plant 
  ; 
  as 
  a 
  result 
  60 
  to 
  75 
  per 
  cent, 
  of 
  the 
  plants 
  were 
  

  

  destroyed. 
  The 
  greatest 
  injury 
  was 
  done 
  during 
  morning 
  hours 
  ; 
  

  

  during 
  the 
  days, 
  the 
  beetles 
  remain 
  on 
  the 
  earth 
  near 
  the 
  plants, 
  hiding 
  

  

  themselves 
  in 
  cold 
  and 
  rainy 
  weather. 
  In 
  1913, 
  pairing 
  started 
  in 
  the 
  

  

  middle 
  of 
  May, 
  and 
  oviposition 
  on 
  peas 
  started 
  on 
  23rd 
  May 
  ; 
  at 
  the 
  

  

  beginning 
  the 
  female 
  lays 
  a 
  small 
  number 
  of 
  eggs, 
  but 
  after 
  a 
  second 
  

  

  copulation 
  up 
  to 
  20 
  eggs 
  daily 
  are 
  laid. 
  A 
  female 
  in 
  captivity 
  laid 
  

  

  from 
  29th 
  May 
  to 
  21st 
  June, 
  276 
  eggs 
  ; 
  another 
  laid 
  from 
  29th 
  May 
  

  

  to 
  4th 
  July, 
  382 
  eggs. 
  Oviposition 
  proceeds 
  from 
  the 
  second 
  half 
  of 
  

  

  