﻿NOXIOUS INSECTS, 



THE COLORADO POTATO BEETLE— Dory phor a 10-lineata Say 

 (Ord. COLEOPTERA ; Fam. Chrysomelid^.) 



In accordance with previous custom, I herewith record such notes 

 on this insect as are suggested by the past year's experience with it 

 and as are deemed of sufficient interest. 



DAMAGE DURING THE YEAR. 



The summer in Missouri was so excessively wet that although the 

 beetle was abundant enough in the spring it subsequently became 

 comparatively scarce and harmless, and did not again become multi- 

 plied till after the rains had ceased and the third brood had developed ; 

 by which time the crop was sufficiently matured to be out of danger. 

 Very much the same conditions occurred all over the upper Missis- 

 sippi Valley country, and as there was an increased acreage planted, 

 the crop throughout this whole section was larger and prices lower 

 than they have been for many years. Indeed in some parts of Michi- 

 gan, Ohio and Indiana, it has been difficult to dispose of potatoes at 

 even 25c. per bushel. 



IN THE ATLANTIC STATES 



the insect attracted much more attention. From almost all parts of 

 New York, New Jersey, Pennsylvania and Virginia, accounts came 

 of the excessive numbers in which the pest made its appearance in 

 the months of May and June. Local papers throughout the States 

 mentioned, published records of the insect's injury and laid the ex- 

 perience that had been gained in the States to the West before their 

 readers ; while even large city dailies, like the World and Herald of 

 New York, devoted column after column to Doryphora's consideration. 

 E K— 20 



