REPORT OF THE STATE ENTOMOLOGIST 1902 121 
Affecting shade trees 
The elm leaf beetle, Galerucella luteola Miill., 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 exceedingiy 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 Rond., is a recent 
introduction and has proved very injurious to wheat in Texas. 
Affecting cotton and other crops 
The cotton worm, Aletia argillacea Hiibn., is a well 
known and exceedingly injurious insect in the South. 
Its associate, the boll worm or corn worm, Heliothis 
armiger Hiibn., 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 Bouché, is very 
destructive to cabbages in various sections of the United States 
and has led to the abandonment by many growers of early cab- 
