INSECTS INJURIOUS TO CEREALS 269 



References to Economic Literature on the Fruit-flies 



1882. Lintner, J. A. — The pickled fruit-fly. First Report, pp. 



216-221. 

 1882. Bowles, G. J. — The pickled fruit-fly, Drosophila ampeloph- 



ila. Can. Ent., Vol. XIV, p. 101. 

 1882. Comstock, J. H. — The pomace-flies. Report of the U. S. 



Entomologist for 1881, p. 198. 

 1896. Howard, L. O. — The fruit-flies or vinegar flies. Bull. 4, 



U. S. Dept. Agri., Bu. Ent., p. 109. 

 1899. Cockerell, T. D. A.— The Drosophila fly. Bull. 32, 



Arizona Expt. Stat., p. 290. 



OCCASIONAL PESTS OF THE PANTRY 



There are two weevils that occur in peas and beans that 

 are liable to be found in the household among these edibles. 

 One of them is often found in numbers in stored beans, for 

 it breeds among the beans and badly injures them. 



The pea weevil, Bruchus pisorum, is about one-fifth 

 of an inch in length and the wing covers are marked with 

 white and black spots. It is an old enemy to peas and 

 does considerable injury farther South. The adult beetle 

 deposits its eggs singly on the surface of the young pods 

 in the field. The egg hatches and the young larva bores 

 through the pod and enters one of the green peas. Many 

 times every pea in a pod is infested. In these cases we 

 certainly often eat one or more of the larvae in the green 

 peas, for each one remains practically invisible within the 

 pea. 



The bean weevil, Bruchus obtectus (Fig. 86), is somewhat 

 smaller than the pea weevil and is not so conspicuously 

 marked, although the wing covers are mottled with light 

 and dark spots. 



