﻿PROCEEDINGS 
  OF 
  THE 
  FOURTH 
  ENTOMOLOGICAL 
  MEETING 
  

  

  99 
  

  

  to 
  2| 
  inclies 
  long. 
  At 
  that 
  time 
  the 
  majority 
  of 
  fully 
  developed 
  worms 
  

   are 
  seen 
  to 
  go 
  towards 
  boundaries 
  of 
  fields 
  and 
  disappear 
  in 
  ground. 
  

   Principally 
  there 
  is 
  only 
  one 
  brood 
  in 
  a 
  year. 
  The 
  second 
  brood 
  is 
  rare 
  

   and 
  if 
  it 
  appears, 
  it 
  is 
  small 
  and 
  not 
  so 
  harmful 
  to 
  the 
  crop. 
  The 
  favourite 
  

   foodplants 
  of 
  the 
  pest 
  are 
  as 
  under 
  : 
  Amongst 
  cultivated 
  crops, 
  the 
  

   following 
  are 
  badly 
  infested 
  : 
  — 
  

  

  1. 
  Sann. 
  

  

  2. 
  Maize. 
  

  

  3. 
  Til. 
  

  

  4. 
  Castor. 
  

  

  5. 
  Mung, 
  Urid 
  and 
  Val. 
  

  

  6. 
  Bajri 
  and 
  Banta. 
  

  

  7. 
  Cotton, 
  if 
  sown 
  early. 
  

  

  Amongst 
  weeds 
  and 
  hedge 
  plants, 
  they 
  principally 
  attack 
  the 
  following 
  :^ 
  

  

  1. 
  Thoria 
  — 
  Euphorbia 
  nereifolia 
  (Cactus 
  plant 
  on 
  Nadiad 
  side). 
  

  

  2. 
  Arni 
  — 
  a 
  hedge 
  plant. 
  

  

  3. 
  Chida 
  grass 
  — 
  Cynodon 
  dactylon. 
  

  

  4. 
  Kathmibdi 
  (a 
  Cucurbit 
  weed 
  on 
  Dohad 
  side). 
  

  

  In 
  short, 
  the 
  above 
  are 
  the 
  principal 
  points 
  of 
  their 
  life 
  history 
  habits 
  

   and 
  foodplants. 
  Having 
  considered 
  these, 
  I 
  now 
  come 
  to 
  the 
  vital 
  

   subject 
  of 
  controlling 
  this 
  pest, 
  the 
  results 
  of 
  which 
  are 
  as 
  under 
  : 
  

  

  At 
  Nadiad 
  Government 
  Farm, 
  where 
  this 
  pest 
  had 
  firmly 
  established 
  

   I 
  started 
  a 
  regular 
  crusade 
  against 
  it 
  for 
  a 
  period 
  of 
  six 
  years 
  from 
  

   1911—1916. 
  

  

  1. 
  The 
  first 
  and 
  foremost 
  measure 
  that 
  was 
  adopted 
  against 
  this 
  

   pest 
  was 
  of 
  putting 
  light-traps 
  in 
  fields 
  during 
  the 
  emergence 
  of 
  these 
  

   moths 
  for 
  the 
  purpose 
  of 
  entrapping 
  them. 
  This 
  was 
  continued 
  for 
  a 
  

   period 
  of 
  six 
  years 
  under 
  my 
  personal 
  supervision. 
  The 
  results 
  of 
  each 
  

   year 
  are 
  tabulated 
  below 
  : 
  — 
  

  

  A 
  statement 
  shoiving 
  the 
  catches 
  of 
  Katra 
  moths 
  hy 
  light-traps 
  caught 
  on 
  

   Nadiad 
  Farm 
  in 
  a 
  period 
  of 
  six 
  years. 
  

  

  