540 



NEW JERSEY AGRICULTURAL COLLEGE 



CORNSTALK BORER. 



The cornstalk horer was iiiiusiially abundant during early summer, 

 and was even more troublesome in tomatoes than in corn. On looking 

 up the literature of the species it was found that the life cycle had 

 not yet been completely made out, and that no practical methods of 

 control were known. The missing facts were worked out, and it now 

 appears that by simply keeping down the natural food plants — rag- 

 \7eed, burdock, pigweed and the like — in September, injury can be 

 completely prevented. 



THE ROSE CHAFER. 



After a series of years, during which little was heard of it, the rose- 

 chafer (Macrodactylus suhspinosus) has again appeared in what may 



Fig. 10. 



The Rose-chafer ; Macrodactylus subspinostis Fabr. : a, adult female beetle ; b,c, details of mouth 



structure ; d, the larva ; e, pupa— all enlarged ; /, beetles at work on a 



grape leaf. From Div. Ent., U. 8. Dept. Agric. 



be considered injurious numbers. The species was by no means as 

 numerous as it was in 1890, when T first became acquainted with it, 



