46 The Bulletin. 



an ounce of Paris green. This mixture is scattered through the 

 fields in rows just as the green clover bait. By some it is said that 

 Cutworms prefer the bran mash to the green clover bait. 



INSECTS OCCASIONALLY INJURIOUS TO TOBACCO. 



When the insects mentioned on the following pages do become 

 serious they are usually very troublesome, but they are, on the whole, 

 insects whose presence in destructive numbers is usually due to some 

 especially favorable condition. Among these special conditions the 

 following might be mentioned : Unfavorable location of seedbed or 

 tobacco field, thus bringing insects that feed normally upon other 

 plants in close proximity to the tobacco plants; weeds that breed 

 and harbor insects, unfavorable weather conditions for the tobacco 

 plant, thus making it especially susceptible to the attacks of certain 

 insects, and the absence of natural enemies of an insect that allows 

 it to increase in enormous numbers. 



The Grouse Locust. 1 

 (Order Orthoptera.) 



A peculiar small grasshopper (Fig. 34) found in the seedbeds eat- 

 ing the leaves, especially the young leaves before they have unfolded 

 from the bud. 



Fig. 34.— Adult of Grouse Locust, enlarged. 

 (Photograph by the author.) 



At Stem, this past season, the Grouse Locust was decidedly more 

 destructive to the tobacco seedlings than the Flea Beetle. Many of the 

 plants were suffering from the attacks of both insects, but whereas the 

 Flea Bugs were riddling the fully expanded leaves, they were in no 

 way injuring the buds, and the plants were able to continue in spite 

 of their attack. On the other hand, the Grouse Locust was eating the 

 buds of the plant, almost completely destroying the leaves before they 

 could expand. (Fig. 35.) Thus the plants were so severely checked 

 that they did not recover. Many plants (at least 20 per cent of the 

 entire number) were killed outright, and many more (30 to 40 per 

 cent of the entire number) were so badly injured that they were 



^ettigidea lateralis. 



