REPORT OF THE STATE ENTOMOLOGIST 1902 121 



Affecting shade trees 



The elm leaf beetle, Galerucella luteola Mull., is a 

 species which is at present confined largely to the Atlantic coast 

 and during the last four or five years has been extending its range 

 northward, particularly in New York and Massachusetts, where it 

 has been exceedingly destructive, and easily ranks as one of the 

 most serious enemies of elms. 



The leopard moth, Zeuzera pyrina Linn., is limited largely 

 to the vicinity of New York city, where it has proved very in- 

 jurious to soft maples in particular, though it has been recorded 

 as depredating on a great many other trees. 



Affecting grains 



The Hessian fly, Cecidomyia destructor Say, is a well 

 known destructive species, which occasionally causes exceedingly 

 severe losses and is more or less injurious every year in some sec- 

 tion of the country. 



The grain aphis, Nectarophora granaria Kirby, is ex- 

 ceedingly destructive in some years to grains in certain sections, 

 and there is no practical method of controlling it. 



A grain louse, Toxoptera graminum Kond., is a recent 

 introduction and has proved very injurious to wheat in Texas. 



Affecting cotton and other crops 



The cotton worm, Aletia argillacea Hubn., is a well 

 known and exceedingly injurious insect in the South. 



Its associate, the boll worm or corn worm, Heliothis 

 armiger Hubn., is exceedingly injurious and may have had 

 a foreign origin. 



The cotton boll weevil, Anthonomus grandis Boh., is a 

 species which has recently become established in Texas, where it 

 has already inflicted enormous damages and is proving exceed- 

 ingly difficult to control. 



The hop plant louse, Phorodon humuli Schrank, is a 

 serious enemy of this crop, which occasionally causes very great 

 losses and is more or less destructive each year. 



The cabbage maggot, Phorbia brassicae Bouche', is very 

 destructive to cabbages in various sections of the United States 

 and has led to the abandonment by many growers of early cab- 



