VOL. XVIII, PP. 197-200 SEPTEMBER 2, 1905 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



A NEW TOBACCO THRIPS. 

 BY W. E. HINDS. 



During 19CH frequent complaints were received by the Bureau 

 of Entomology of a thrips doing damage to shade-grown tobacco 

 in Florida, producing an injury termed " white vein." As the 

 tobacco is being grown in order to obtain the highest grade of 

 wrapper leaf, the injury produces a considerable decrease in the 

 value of the product. 



About eighteen years ago Lindeman described a species of 

 thrips which was doing great damage to tobacco grown in Bes 

 sarabia, giving it the name Thrips tabaci. This species has since 

 been found scattered over Europe, England, and the United 

 States, but, peculiar as it may seem, there is no recoord of its 

 having attacked tobacco in this country, though the list of its 

 food plants is large. Thus, the " tobacco thrips " of Lindeman 

 has come to be generally known as the ' ' onion thrips ' ' in the 

 United States. No confusion will arise in this country, there 

 fore, if we apply the common name "tobacco thrips" to the 

 new species here described. 



The specimens from which this description has been made 

 were collected and forwarded by Mr. W. A. Hooker, who has 

 been studying the problem of controlling this pest. 



35 PROC. BIOL. Soc. WASH., VOL. XVIII, 1905. (197) 



