﻿271 
  

  

  Theobald 
  (F. 
  V.). 
  Additions 
  to 
  the 
  list 
  of 
  Kent 
  Aphididac. 
  — 
  Entomolo- 
  

   f/isf, 
  London, 
  xlvii, 
  Mar. 
  1914, 
  pp. 
  100-104. 
  

  

  A 
  list 
  is 
  given 
  of 
  Apliides 
  not 
  previously 
  recorded 
  for 
  Kent, 
  including? 
  

   a 
  few 
  new 
  to 
  British 
  fauna 
  ; 
  the 
  list 
  includes 
  12 
  genera 
  and 
  about 
  

   40 
  species. 
  The 
  most 
  abundant 
  and 
  liarniful 
  species 
  in 
  1913 
  was 
  

   Aphis 
  sorbi, 
  which 
  did 
  great 
  damage 
  to 
  the 
  apple 
  crop 
  ; 
  next 
  in 
  import- 
  

   ance 
  was 
  A. 
  abietina, 
  on 
  spruces, 
  causing 
  in 
  many 
  cases 
  complete 
  

   defoliation. 
  

  

  Felt 
  (E. 
  P.). 
  Diadiplosis 
  coccidirora 
  , 
  sp. 
  n.. 
  — 
  Entomologist, 
  London, 
  

   xlvii, 
  Mar. 
  1914, 
  pp. 
  86. 
  

  

  A 
  description 
  is 
  given 
  of 
  a 
  new 
  species 
  of 
  midge, 
  Diadiphsis 
  coccid- 
  

   ii'ora, 
  reared 
  in 
  some 
  numbers 
  from 
  a 
  species 
  of 
  Pseudococcus 
  by 
  

   A. 
  Rutherford 
  in 
  Ceylon. 
  It 
  appears 
  to 
  be 
  related 
  to 
  D. 
  cocci 
  which 
  

   preys 
  upon 
  the 
  eggs 
  of 
  the 
  black 
  scale, 
  Saissetia 
  nigra, 
  though 
  differ- 
  

   ences 
  may 
  be 
  great 
  enough 
  to 
  warrant 
  placing 
  it 
  in 
  a 
  separate 
  genus. 
  

  

  HowLETT 
  (F. 
  M.). 
  A 
  trap 
  for 
  Thrips.-— 
  J?. 
  Econ. 
  Biol, 
  London, 
  ix, 
  

   no. 
  1, 
  Mar. 
  1914, 
  pp. 
  21-23. 
  

  

  The 
  author 
  gives 
  the 
  results 
  of 
  experiments 
  made 
  to 
  test 
  the 
  degree 
  

   of 
  attraction 
  of 
  certain 
  chemical 
  substances 
  for 
  flower-haunting 
  insects. 
  

   Three 
  of 
  the 
  substances 
  tried 
  were 
  found 
  to 
  have 
  a 
  marked 
  attraction 
  

   for 
  Thrips, 
  namely 
  benzaldehyde, 
  cinnamylaldehyde, 
  and 
  anisaldehyde. 
  

   The 
  two 
  latter 
  can 
  be 
  bought 
  for 
  8s. 
  -10s. 
  per 
  lb., 
  but 
  benzaldehyde 
  

   costs 
  under 
  2s. 
  per 
  lb. 
  ; 
  taking 
  the 
  same 
  quantities 
  as 
  were 
  used 
  in 
  

   the 
  experiments, 
  1 
  lb. 
  is 
  enough 
  for 
  about 
  200 
  traps, 
  Avhich 
  retain 
  their 
  

   efficiency 
  for 
  at 
  least 
  a 
  week. 
  To 
  prevent 
  possible 
  oxidation 
  of 
  the 
  

   aldehyde, 
  a 
  trace 
  of 
  formaldehyde 
  may 
  be 
  added. 
  In 
  the 
  experiment 
  

   traps 
  two 
  species 
  of 
  Thrips 
  were 
  caught, 
  but 
  neither 
  was 
  identified. 
  

   The 
  method 
  adopted 
  was 
  to 
  expose 
  small 
  bowls, 
  each 
  containing 
  

   about 
  half 
  a 
  pint 
  of 
  water 
  with 
  2 
  c.c. 
  of 
  the 
  aldehyde 
  stirred 
  up 
  in 
  it. 
  

   The 
  insects 
  attracted 
  are 
  drowned 
  in 
  the 
  water. 
  The 
  experiments 
  

   were 
  made 
  in 
  November 
  and 
  December, 
  a 
  season 
  when 
  Thrips 
  is 
  far 
  

   from 
  abundant, 
  and 
  consequently 
  the 
  figures 
  showing 
  the 
  numbers 
  

   caught 
  are 
  small. 
  The 
  author 
  believes 
  tliat 
  in 
  warmer 
  weather 
  the 
  

   catches 
  would 
  be 
  larger. 
  He 
  proposes 
  to 
  continue 
  the 
  experiments 
  

   in 
  warm 
  weather 
  and 
  to 
  use 
  nitrobenzene, 
  a 
  substance 
  which 
  does 
  

   not 
  contain 
  the 
  aldehyde 
  group, 
  but 
  which 
  has 
  a 
  smell 
  closely 
  resem- 
  

   bling 
  that 
  of 
  benzaldehyde. 
  It 
  should 
  then 
  be 
  possible 
  not 
  only 
  to 
  

   obtain 
  more 
  evidence 
  as 
  to 
  the 
  practical 
  economic 
  value 
  of 
  the 
  method, 
  

   but 
  to 
  ascertain 
  also 
  whether 
  the 
  attractiveness 
  is 
  due 
  to 
  the 
  presence 
  

   of 
  the 
  aldehyde 
  group, 
  or 
  whether 
  the 
  insect's 
  olfactory 
  sense 
  is, 
  like 
  

   our 
  own, 
  similarly 
  affected 
  by 
  nitrobenzene 
  and 
  benzaldehyde. 
  

  

  Hood 
  (J. 
  D.). 
  On 
  the 
  proper 
  Generic 
  Names 
  for 
  certain 
  Thysanoptera 
  

  

  of 
  Economic 
  Importance. 
  — 
  Proc. 
  Entoni. 
  Soc, 
  Washington, 
  xvi, 
  

  

  no. 
  1, 
  March 
  1914, 
  pp. 
  34-44. 
  

  

  The 
  author 
  contends 
  that 
  the 
  tobacco 
  thrips, 
  the 
  pear 
  thrips 
  and 
  

  

  the 
  orange 
  thrips 
  — 
  species 
  responsible 
  in 
  the 
  United 
  States 
  for 
  damage 
  

  

  amounting 
  to 
  many 
  thousands 
  of 
  dollars 
  every 
  year, 
  are 
  at 
  present 
  

  

  wrongly 
  placed 
  in 
  the 
  genus 
  Euthrips, 
  Targ., 
  and 
  should 
  be 
  known 
  as 
  

  

  Frankliniella 
  fusca. 
  Hinds, 
  Taeniothrips 
  jyyri, 
  Dan., 
  and 
  Scirtothrijys 
  

  

  