ENTOMOLOGY 217 



They are wingless and crawl upon the ground. They cannot 

 hop over an obstruction a foot high. It would seem very easy to 

 attack them in some effective way and destroy them on an enormous 

 scale ; but how ? It is clear that we cannot destroy the eggs for these 

 are laid in the ground all the way from the fields to a point half way 

 up the mountains. The young crickets, in bands far up in the hills, 

 are miles away from the ranches, in brush and timber so thick that 

 a horse can scarcely make his way through. It is not probable that 

 any effective warfare can be directed against the young crickets. 

 When the full grown ones come down from the hills, the ranchers 

 are haying. Every one is busy and it is very hard to hire labor of 

 any kind at this time. 



Enough has been said to show some of the difficulties in the 

 way of any successful fight against this black pest. Whatever means 

 is used must be fairly cheap, very effective, and must not require 

 any large number of men or any great amount of time to put it into 

 operation. 



At present we can take but little practical use of either irrigation 

 ditches, deep trenches or kerosene in fighting the crickets. We have 

 not succeeded in poisoning them in any practical and effective way. 

 Our main reliance at present must be cricket-proof fences of tin or 

 oilcloth. Of these the Nevada tin wall is the most effective. Its use- 

 fulness is limited, however, by the small supply of available empty 

 coal oil tins. The oilcloth and burlap fence has not been tested as 

 fully as the other two have been. Our experiments all indicate, how- 

 ever, that it will prove to be a practical method of checking the crick- 

 ets when it is properly used. (Nev. E. S. B. 56:) 



INSECTS AFFECTING STORED PRODUCTS. 



The Angumois Grain Moth. This insect is one of the most se- 

 rious pests to stored grain that we have. The moth is thought to be 

 indigenous to the region of the Mediterranean sea. It derives its 

 name from the French Province Angumois, where it was at one time 

 particularly injurious. The food of the Angumois moth in Amer- 

 ica is quite varied, but corn and wheat suffer most from its ravages. 



The adult is a small moth, having a wing expanse of about one- 

 half of an inch. Its body and fore-wings have a soft, shiny, light 

 gray color, while the hind-wings are darker and bordered with a long, 

 delicate fringe. The ventral surface of the body and the wings are 

 darker than the dorsal surface, while the legs are somewhat darker 

 than the body, the caudal pair being hairy, and provided with spurs. 

 The larva is, when full grown, nearly one-fourth of an inch in 

 length, of a light color, provided with numerous hairs, which on the 

 first and last segments are somewhat longer than elsewhere. In 

 general form the body is cylindrical, gradually tapering caudad 

 from the second segment; the head is brown. The egg is somewhat 

 oval in form, and of a pale red color. The pupa is about one-fourth 

 of an inch long, brownish in color, with the abdominal region of a 

 somewhat lighter shade. 



The eggs are deposited on the grain, either in the field or in the 

 granary. They are placed in the ears of corn, between the rows of 



