CHAPTER XV 

 INSECTS INJURIOUS TO POTATOES AND TOMATOES 



The Potato Stalk-borer* 



IN some sections this insect has rivaled the famous Colorado 

 potato-bug in the damage it has inflicted upon potato-vines. It 

 was recorded as badly damaging the crop in Iowa in 1890, 



FIG. 209. Work of potato stalk-borer in potato-vines. (After J. B. Smith.) 



and was found by Dr. Riley in Missouri as early as 1869. The 

 beetles were first noted in New Jersey in 1895, and have been 

 injurious in Maryland and most of the Middle States. 



Life History. The grubs, which bore into the stalks of the vines, 



* Trichobaris trinotata Say. Family Curculionidce. 



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