﻿516 
  

  

  ■spraying 
  with 
  tobacco 
  extract 
  (i 
  or 
  J 
  lb. 
  of 
  tobacco 
  extract 
  in 
  11 
  

   quarts 
  of 
  water) 
  is 
  recommended 
  immediately 
  after 
  the 
  larvae 
  have 
  

   hatched. 
  

  

  RoDziANKo 
  (V. 
  N.). 
  HtKOTopbix-b6a6oMKax"b, 
  ryceHMUbi 
  KOTopbixij 
  

   noBpewflaioTij 
  cocHOBbm 
  nocaflKM 
  6nM3"b 
  r. 
  Kieea. 
  [On 
  some 
  

   Microlepidoptera, 
  the 
  caterpillars 
  of 
  which 
  injure 
  pine-plantations 
  

   in 
  the 
  environs 
  of 
  Kiev.] 
  — 
  Kiev, 
  1913, 
  10 
  pp. 
  

  

  In 
  May 
  1912, 
  the 
  author 
  obtained 
  from 
  forests 
  in 
  the 
  government 
  

   of 
  Kiev 
  samples 
  of 
  the 
  leading 
  shoots 
  of 
  young 
  pines, 
  the 
  terminal 
  

   buds 
  of 
  which 
  were 
  damaged 
  by 
  Microlepidopterous 
  larvae 
  ; 
  later 
  he 
  

   obtained 
  some 
  young 
  green, 
  but 
  longer 
  shoots 
  of 
  the 
  same 
  pines, 
  also 
  

   damaged 
  by 
  these 
  caterpillars, 
  from 
  which 
  he 
  bred 
  three 
  species 
  of 
  

   moths, 
  one 
  belonging 
  to 
  the 
  Pyralidae 
  and 
  two 
  to 
  the 
  Tortricidae. 
  

   The 
  former 
  is 
  described 
  by 
  the 
  author 
  as 
  a 
  new 
  variety, 
  viz. 
  : 
  — 
  Dioryc- 
  

   tria 
  (Phycis) 
  abietella, 
  var. 
  jnnetella, 
  Rodz,, 
  and 
  he 
  also 
  refers 
  to 
  the 
  

   closely 
  allied 
  D. 
  (Phycis) 
  splendidella, 
  H. 
  S., 
  w^hich 
  has 
  been 
  reared 
  

   from 
  pine-cones 
  and 
  diseased 
  pine-branches. 
  The 
  larvae 
  of 
  D. 
  abietella 
  

   injure 
  the 
  cones 
  and 
  shoots 
  of 
  Picea 
  excelsa 
  and 
  Abies 
  pectinata, 
  Dec, 
  

   in 
  w^hich 
  they 
  make 
  mines 
  ; 
  they 
  live 
  also 
  in 
  the 
  galls 
  of 
  Chermes. 
  

   According 
  to 
  Ratzeburg, 
  and 
  Judeich 
  and 
  Nietsche, 
  these 
  caterpillars 
  

   breed 
  also 
  inside 
  the 
  cones, 
  but 
  not 
  in 
  the 
  shoots 
  and 
  branches, 
  of 
  Pinus 
  

   silvestris, 
  although 
  some 
  other 
  authors, 
  such 
  as 
  Rossler, 
  Sorhagen 
  and 
  

   Meyrick, 
  report 
  having 
  found 
  them 
  there. 
  The 
  author 
  points 
  out 
  

   that 
  the 
  form 
  of 
  Dioryctria 
  reared 
  by 
  him 
  is 
  more 
  distinct 
  from 
  

   D. 
  abietella 
  than 
  is 
  D. 
  schiltzeella, 
  Fuchs, 
  which 
  is 
  regarded 
  as 
  a 
  

   separate 
  species. 
  He 
  suggests 
  that 
  the 
  varied 
  food 
  of 
  the 
  different 
  

   forms 
  of 
  Dioryctria 
  is 
  responsible 
  for 
  the 
  difference 
  in 
  the 
  colour 
  and 
  

   markings. 
  The 
  larvae, 
  of 
  the 
  variety 
  he 
  describes 
  Hved 
  in 
  mines, 
  

   burrowing 
  in 
  the 
  interior 
  of 
  young 
  green 
  shoots 
  on 
  the 
  tips 
  of 
  small 
  

   pines. 
  From 
  larvae 
  collected 
  in 
  June 
  1912 
  he 
  reared 
  the 
  first 
  moth 
  

   on 
  17th 
  July, 
  and 
  the 
  last 
  ten 
  days 
  later. 
  The 
  caterpillars 
  pupated 
  

   in 
  cocoons 
  spun 
  between 
  the 
  needles. 
  He 
  describes 
  the 
  larvae, 
  pupa 
  

   and 
  imago, 
  and 
  recommends 
  as 
  a 
  remedy 
  collecting 
  and 
  destroying 
  

   the 
  damaged 
  shoots 
  while 
  the 
  caterpillars 
  are 
  still 
  inside. 
  

  

  Two 
  species 
  of 
  Tortricidae, 
  Rhyacionia 
  (Retinia) 
  buoliana, 
  S. 
  V., 
  

   and 
  R. 
  duplana, 
  Hiibn., 
  were, 
  reared 
  by 
  the 
  author. 
  The 
  larvae 
  of 
  

   the 
  former 
  were 
  found 
  in 
  w^ebs 
  on 
  the 
  summits 
  of 
  young 
  pines. 
  In 
  the 
  

   second 
  half 
  of 
  June 
  the 
  caterpillars 
  pupated 
  in 
  the 
  webs, 
  the 
  moths 
  

   emerging 
  about 
  a 
  fortnight 
  later. 
  Only 
  one 
  generation 
  occurs, 
  and 
  

   these 
  caterpillars 
  winter 
  and 
  proceed 
  to 
  feed 
  and 
  develop 
  further 
  next 
  

   spring. 
  The 
  author 
  describes 
  the 
  injury 
  done 
  by 
  the 
  caterpillars, 
  and 
  

   recommends 
  the 
  collection 
  and 
  destruction 
  of 
  the 
  infested 
  shoots 
  

   while 
  they 
  are 
  still 
  inside. 
  

  

  Rhyacionia 
  duplana 
  is 
  the 
  commonest 
  species 
  near 
  Kiev, 
  at 
  least 
  

   in 
  1912. 
  The 
  larvae 
  mine 
  inside 
  young 
  pine-shoots; 
  there 
  is 
  only 
  one 
  

   brood 
  during 
  the 
  summer, 
  the 
  winter 
  being 
  passed 
  in 
  the 
  pupal 
  stage. 
  

   The 
  caterpillars 
  reared 
  by 
  the 
  author 
  in 
  the 
  laboratory 
  spun 
  their 
  

   cocoons 
  inside 
  the 
  mines 
  in 
  the 
  shoots 
  ; 
  attacked 
  shoots 
  should 
  be 
  

   destroved. 
  

  

  