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by the use of arsenical dusts or sprays, but reinfec- 
tion soon takes &lace, if alternative food plants are 
not destroyed. 
Dysdercus cingula'tus, Fb., (Pyrrhocoridae) . 
(“ Cotton Stainer”). 
The boll is punctured by this insect in feeding, and 
bacteria are thus introduced, which discolour the 
lint. 
The nymphs or young forms congregate together 
on the bolls and on the ends of branches, and can 
be shaken into a bucket containing water, covered 
with a film of kerosene. The nymphs are particu- 
larly susceptible to derris (“ tuba ”) in spray form. 
Pests of Kapok or Silk Cotton. 
(. Eriodendron anfractuosum ) . 
Kapok is liable to be damaged by several “ boring ” 
insects. The grubs of a species of weevil, Alcides 
leeuweni , Hllr., (Curculionidae) , tunnel the young 
twigs and hinder the growth of the plant. All the 
damaged twigs containing the grubs should be cut 
off and destroyed. 
Zeuzera coffeae, Nietn., ( Cossidae ). 
The caterpillars of this moth, in addition to boring 
the branches and stems of coffee, tea and other 
plants, tunnel those of kapok and occasionally do 
considerable damage. The caterpillars should be 
cut out of the stem and destroyed. 
Dysdercus cingulatus , which has been mentioned 
as a pest of cotton and roselle, is also an enemy of 
this plant. 
Pests of Bananas. 
Bananas are grown by Asiatics throughout Malaya, 
but no pest has become in any way serious. 
