﻿591 
  

  

  GowDEY 
  (C. 
  C). 
  Annual 
  Report 
  of 
  the 
  Entomologist. 
  — 
  Ann. 
  Rept. 
  

   Uganda 
  Dept. 
  Agric. 
  for 
  the 
  year 
  ended 
  31st 
  March 
  1914, 
  Kampala, 
  

   19U, 
  pp. 
  36-58. 
  [Received 
  12th 
  Sept. 
  1914.] 
  

  

  During 
  1913, 
  Stephanoderes 
  coffeae, 
  Haged., 
  was 
  extremely 
  numerous, 
  

   and 
  was 
  found 
  to 
  attack 
  stored 
  coffee 
  berries 
  as 
  well 
  as 
  those 
  on 
  the 
  

   trees 
  ; 
  the 
  author 
  reproduces 
  his 
  article 
  on 
  Dirphya 
  princeps, 
  Jord., 
  

   [see 
  this 
  Review, 
  Ser. 
  A, 
  ii, 
  pp. 
  275-276.] 
  The 
  Bostrychid 
  coffee 
  

   borers, 
  Apate 
  indistincta, 
  Murr., 
  and 
  A. 
  monacha, 
  F., 
  differ 
  from 
  D. 
  

   princeps 
  in 
  that 
  they 
  always 
  burrow 
  upwards, 
  and 
  more 
  than 
  one 
  

   insect 
  may 
  be 
  found 
  in 
  one 
  burrow 
  ; 
  the 
  frass 
  near 
  the 
  base 
  of 
  the 
  trees 
  

   indicates 
  the 
  presence 
  of 
  these 
  borers, 
  against 
  which 
  carbon 
  bisulphide 
  

   or 
  carbon 
  tetrachloride 
  are 
  of 
  Httle 
  use, 
  though 
  benzene 
  has 
  given 
  good 
  

   results. 
  Two 
  or 
  three 
  pieces 
  of 
  cotton 
  wool 
  soaked 
  in 
  benzene 
  should 
  

   be 
  introduced 
  loosely 
  into 
  the 
  tunnel, 
  after 
  the 
  frass 
  has 
  been 
  removed 
  

   from 
  the 
  orifice, 
  which 
  should 
  then 
  be 
  sealed 
  with 
  plaster 
  of 
  Paris. 
  

   The 
  larvae 
  of 
  Parasa 
  sp. 
  and 
  Metadrepana 
  glauca, 
  Hmp., 
  feed 
  on 
  

   coffee 
  leaves, 
  and 
  the 
  best 
  insecticide 
  against 
  these 
  caterpillars 
  is 
  

   chromate 
  of 
  lead 
  (3 
  lb. 
  in 
  100 
  gallons 
  of 
  water). 
  Crickets 
  {Gryllotalpa 
  

   africana, 
  P. 
  de 
  B., 
  and 
  Gryllusbimaculatus, 
  de 
  G.) 
  confine 
  their 
  attacks 
  

   to 
  the 
  nurseries 
  and 
  young 
  plants 
  [see 
  this 
  Review, 
  Ser. 
  A, 
  ii, 
  p. 
  59.] 
  

   Besides 
  three 
  undetermined 
  species, 
  the 
  Coccidae 
  at 
  present 
  known 
  

   to 
  attack 
  coffee 
  in 
  Uganda 
  are 
  : 
  — 
  Pseudococcus 
  (Dactylopius) 
  citri^ 
  

   Risso, 
  Pulvinaria 
  psidii, 
  Mask., 
  Ceroplastes 
  ceriferus, 
  And., 
  C. 
  galeatus, 
  

   Newst., 
  C. 
  vinsonioides, 
  Newst., 
  Lecanium 
  africanum, 
  Newst., 
  Coccus 
  

   (L.) 
  viridis, 
  Green, 
  Stictococcus 
  gowdeyi, 
  Newst., 
  and 
  Selanaspidus 
  

   articulatus, 
  Morg. 
  L. 
  africanum 
  probably 
  is 
  the 
  only 
  one 
  of 
  which 
  coffee 
  

   is 
  the 
  sole 
  food-plant. 
  Experiments 
  in 
  the 
  use 
  of 
  kerosene 
  oil 
  as 
  a 
  bait 
  

   for 
  the 
  Mediterranean 
  fruit-fly 
  (Ceratitis 
  capitata, 
  Wied.) 
  and 
  also 
  the 
  

   cacao 
  fruit-fly 
  (C. 
  punctata) 
  were 
  not 
  successful, 
  the 
  oil 
  evaporating 
  

   too 
  soon 
  and 
  the 
  proportion 
  of 
  females 
  to 
  males 
  attracted 
  being 
  very 
  

   small 
  ; 
  the 
  fly 
  was 
  as 
  prevalent 
  as 
  during 
  the 
  previous 
  year. 
  Cut- 
  

   worms 
  were 
  also 
  troublesome, 
  but 
  they 
  are 
  usually 
  to 
  be 
  found 
  about 
  

   four 
  inches 
  from 
  the 
  stem 
  and 
  not 
  deeper 
  than 
  three, 
  and 
  a 
  systematic 
  

   search 
  for 
  them 
  is 
  preferable 
  to 
  the 
  use 
  of 
  poisoned 
  baits. 
  

  

  Cotton 
  was 
  attacked 
  by 
  the 
  spiny 
  boll 
  worm, 
  Earias 
  insulana, 
  Boisd., 
  

   which 
  lays 
  its 
  eggs 
  preferably 
  on 
  the 
  bolls 
  and 
  particularly 
  in 
  the 
  grooves 
  

   near 
  the 
  apex. 
  These 
  are 
  laid 
  singly 
  after 
  dusk, 
  and 
  a 
  moth 
  kept 
  

   under 
  observation 
  in 
  the 
  field 
  laid 
  210 
  eggs 
  in 
  five 
  consecutive 
  nights, 
  

   decreasing 
  from 
  87 
  on 
  the 
  first 
  to 
  7 
  on 
  the 
  fifth 
  night, 
  but 
  it 
  is 
  probable 
  

   that 
  the 
  egg-laying 
  period 
  may 
  extend 
  over 
  a 
  much 
  longer 
  time. 
  The 
  

   young 
  larvae 
  bore 
  into 
  the 
  bolls 
  near 
  the 
  base, 
  and 
  their 
  presence 
  may 
  

   be 
  detected 
  by 
  the 
  excrement 
  exuding 
  from 
  the 
  hole 
  they 
  make 
  ; 
  

   they 
  sometimes 
  also 
  bore 
  into 
  terminal 
  buds. 
  The 
  moths 
  are 
  

   nocturnal 
  in 
  habit, 
  hiding 
  during 
  the 
  day 
  between 
  the 
  involucre 
  and 
  

   the 
  boll. 
  Four 
  experiments 
  show 
  the 
  length 
  of 
  the 
  incubation 
  period 
  

   to 
  be 
  from 
  4 
  to 
  6 
  days, 
  of 
  the 
  larval 
  from 
  14 
  to 
  15 
  days, 
  and 
  of 
  the 
  

   pupal 
  stage 
  from 
  10 
  to 
  14 
  days 
  ; 
  there 
  are 
  several 
  generations 
  during 
  

   a 
  season. 
  The 
  loss 
  caused 
  by 
  this 
  bollworm 
  is 
  accentuated 
  by 
  bacterial 
  

   action, 
  induced 
  by 
  the 
  presence 
  of 
  excrement, 
  which 
  sets 
  up 
  in 
  the 
  

   boU, 
  and 
  by 
  the 
  larval-borings 
  which 
  allow 
  of 
  the 
  entrance 
  of 
  the 
  

   spores 
  of 
  saprophytic 
  fungi. 
  The 
  Malvaceae 
  are 
  the 
  only 
  known 
  food- 
  

   plants 
  of 
  E. 
  insulana, 
  and 
  as 
  traps, 
  rows 
  of 
  Hibiscus 
  escidentus 
  should 
  

  

  