Mr. P. C. Sen. 
132 PROCEEDINGS OF THE SECOND ENTOMOLOGICAL MEETING 
The seeds of Bombax are extremely attractive to Dysdercus cingulatus 
and masses of these bugs occur on and around simul trees when these 
are in seed. They can then be killed in numbers before they disperse: 
and attack cotton, Hibiscus, ete. 
We will next take the 
NON-MALVACEOUS FIBRE-PLANTS. 
under which heading we include Jute, Aloe and Calotropis. 
Jute (Corchorus capsularis). 
Jute seedlings are attacked by :— 
Laphygma exigua. 
Brachytrypes portentosus (achatinus). 
Lauphygma exigua is sometimes a serious pest, occuring regularly 
in most years and sometimes doing great damage by checking the growth 
of the plants. 
Brachytrypes portentosus also attacks the seedlings but is usually 
a minor pest, sometimes doing considerable damage, chiefly in Bengal 
in May and June. We have already dealt with both these insects before 
and there seems to be nothing particular to add about them here. 
Jute leaves and topshoots are attacked by :— 
Diacrisia obliqua. 
Cosmophila sabulifera. 
Prodenia litura. 
Creatonotus gangis. 
Tarache crocata. 
Perigea capensis. 
Nisotra madurensis. 
Trachys sp. 
Tanymecus indicus. 
Myllocerus viridanus. 
5 discolor. 
Diacrisia obliqua is a serious pest on the leaves of jute in Bengal 
and Bihar, attacking the plant when it is about three or four feet high. 
In later stages of growth, the attack is less serious. If care is taken to 
take the attack in time and to handpick the eggmasses and bunches 
of young larve, whilst these are still gregarious, this method of control 
is quite effective. 
Handpicking has been found useful in Bengal but the cultivators 
do it only under official pressure. 
