University of the State of New York 



New York State Museum 



Frederick J. H. Merrill Director 

 Ephraim Porter Pelt State Entomologist 



Bulletin 72 



ENTOMOLOGY 19 



GRAPEVINE ROOT WORM 



PKEFACE 



The grapevine root worm has proved itself such a destruc- 

 tive enemy of vineyards in tte Chautauqua grape belt, and so 

 little success has attended efforts to control it, that it was deemed 

 advisable in 1902 to undertake an investigation of this insect. 

 The work of last year was embodied in Museum bulletin 59, 

 and the material additions to our knowledge of this pest, gained 

 in 1903, have rendered it advisable to issue an extended and re- 

 vised edition of our previous publication, because the subject is of 

 such vital importance that our growers should have all avail- 

 able information at their disposal. Many valuable facts have 

 been ascertained during the last two seasons; and the additional 

 data gained in 1903 demonstrate the value of timely cultivation 

 and prove that collecting the beetles is practical, the most re- 

 liable and probably the most economical method of controlling 

 this very serious enemy of the vine. 



Through the courtesy of the Hon. C. A. Wieting, commissioner 

 of agriculture, the entomologist has been able to avail himself 

 of the services of nursery inspector J. Jay Barden who has co- 

 operated with the writer very efficiently, and most of the field 

 investigations were carried on with the assistance of this gentle- 

 man. Acknowledgment is due Mr D.- K. Falvay of Westfield, who 

 kindly placed a portion of his excellent vineyard at our disposal 

 and cooperated with us most efficiently, thereby not only bene-" 

 fi^' ^ix himself but aiding materially in demonstrating a practical 



