REPORT OF STATE ENTOMOLOGIST 1899 



587 



INSECTS AFFECTING STORED GRAINS AND LEGUMINOUS SEEDS. 



70 Grain moth (Sitotroga cerealella). A small caterpillar 

 about T 7 ff in. long working in various grains and producing a whitish 

 moth with a wing spread of a little over )/ 2 in. 



Treatment: fumigate infested grain with carbon bisulfid and treat 

 suspected granaries in the same manner. 



7 1 Saw toothed grain beetle (Silvanus Surinam ensis). 

 A small, brown, slender beetle about in. long found infesting cereals 

 and dried food products. 



Treatment : fumigate infested cereals with carbon bisulfid and allow 

 none of its food to lie long undisturbed. 



72 Indian meal moth (Plodia interpunctella). Whitish 

 caterpillar living in indian meal and other cereals and fastening the par- 

 ticles of grain together with a web. Moth with the outer two thirds of 

 fore wings reddish brown, the inner portion and hind wings light gray. 



Treatment : fumigate infested food with carbon bisulfid. 



73 Confused flour beetle (Tribolium confusum). A 

 Tather stout, shining, reddish brown beetle about T \ in long. Very pro- 

 lific and frequently causes considerable injury. 



Treatment: fumigate with carbon bisulfid and clean infested localities. 



74 Bean weevil (Bruchus obtectus). Small grayish brown 

 beetles about }i in. long breeding in dry beans and eating out numerous 

 holes. 



Treatment: fumigate beans in all infested localities with carbon 

 bisulfid as soon as threshed. 



75 Pea weevil (Bruchus pisorum). Brownish or black 

 beetles with indistinct white markings, about T \ in. long, infesting peas. 



Treatment : same as for bean weevil. 



BENEFICIAL INSECTS 



76 Silk worm (Bombyx mori). Showing eggs, larva, single 

 and double cocoons, those from which moths have emerged, one from 

 which the silk has been reeled, male and female moths, raw silk ; also 

 •several other species of silk-producing moths. 



77 Pollen carriers. A great many insects convey pollen from 

 flower to flower and in certain cases there are some very interesting 

 adaptations. Some of the more common pollen carriers are honey bees, 



