( 34 ) 
As a preventive, rigorous cleanliness in factory and 
store-room will do much to prevent the increase of 
insects attacking stored products. 
Calandra oryzae, Linn., {Curculionidae) , is the most 
serious pest of stored grain, and attacks rice in 
Malaya. It requires 10 per cent, of moisture for 
development, so that, if grain can be kept bone-dry, 
there is no danger of attack. 
Sitotroga cerealella, 01., (Gelechiadae) , is a moth 
which lays its eggs in grain, the caterpillars doing 
considerable damage at times. 
Lasioderma serricorne> Fb., ( Ptinidae ), is a small 
beetle which does extensive damage to manufactured 
tobacco. It also attacks groceries, drugs, tapestry, 
silk and other articles. 
Tribolium castaneum, Herbst., (T enebrionidae) , at- 
tacks pulses, grain, flour and such .articles as rubber- 
seed cake. 
Necrobia rufipes , Fb., ( Cleridae ), is a minor pest of 
dried animal products, but also feeds on stored copra. 
It is attracted to artificial light, and first came to 
the notice of the Department on account of com- 
plaints from residents living near copra stores. 
Ephestia spp., ( Pyralidae ), are pests on flour and 
dried vegetable matter, the caterpillars making a 
large amount of webbing and matting the material 
together. 
HOUSEHOLD AND OTHER INSECTS. 
In addition to those attacking crops, there are cer- 
tain insects against which the planter must be on 
his guard. House-flies, fleas, and mosquitoes are 
