Xo. 4.] THE GYPSY MOTH. 293 



Orasshoiipers. (Rocky Mountain Locust.) 

 (Caloptenus spretus, Uhler.) 

 1874. Damage done to com and staple crops in Kansas, 



Nebraska, Iowa and Missouri, .... $56,000,000 

 (First Rep., of U. S. Ent. Com., 1877, p. 121.) 



1874. Total loss to the four States, 100,000,000 



(First Rep. of U. S. Ent. Com., 1877, p. 121.) 



1874. Total loss in these and neighboring States by dam- 



ages, suspension of business, etc., . . . 200,000,000 

 (" Insect Life," vol. 3, p. 397.) 

 1874-1877. Damage in the United States, . . . . 200,000,000 



(" Insect Life," vol. 2, p. 216.) 



1875. Twenty-six counties in Missouri, * . . . '. 15,000,000 



(Prof. C. V. Riley ) 



Estimates, — Average A>rNTJAL Damage by Insects in the United 



States to Staple Crops. 

 1868. B. D. Walsh in the American Entomologist, .$200,000,000 to 



$300,000,000 

 1877. Dr. A. S. Packard estimates that it exceeds . . 200,000,000 

 1884. Variously estimated at from $300,000,000 to . . 400,000,000 



(Riley and others.) f 

 1891. James rietcher,t ....... 380,000,000 



(Entomologist Dominion of Canada.) 



Most of the foregoing figures represent the damage done by insects 

 which eat certain of our most important crops, or by those which 

 accumulate in vast numbers, and by sweeping over a region devour 

 nearly every green thing, and so are most conspicuous. Such insects 

 attract a greater share of the public attention than many other species 

 which are widely spread and possibly equally injurious, but which 

 appear regularly in comparatively small numbers over a wide area, 

 and whose depredations are local, annual and perennial. Among these 

 may be reckoned such insects as the June beetle, the rose beetle, the 

 codling moth, many cut worms, and forest insects, some of which are 

 continually injurious over large areas, but whose ravages are not 

 usually especially noticeable except in particiilar localities. 



In proof of this. Dr. Lintner says that the regular and periodical damage 

 done by cut worms in this country, each year, would probably exceed thai 

 of the Rocky Mountain locust. 



It is quite probable, were all the various losses and expenses directly 

 or indirectly connected with the problem of insect damages, and pro- 

 tection therefrom, included in these estimates, that the sum total would 



* 8tli Report on Missouri Insects, 1876, p. 90. 

 t Rep. of U. S. Dept, of Agr., 1884, p. 324. 

 I " Insect Life," vol. 4, p. 13, 



