FOOD PLANTS. 
13 
In literature the insect is reported from the following States: 
Arkansas (Riley, Howard, and Stimson); Illinois (Walsh and Kiley); 
Iowa (Kridelbaugh) ; Kansas (Webster); Kentucky (Walsh); Mis- 
souri (Riley); New Jersey (Smith); New York (Lintner, Slingerland, 
and Felt); Ohio (Webster); Pennsylvania (Slingerland and Felt). 
According to records of the Bureau of Entomology the insect 
occurs in Illinois, Kentucky, Michigan, Mississippi, Missouri, New 
York, North Carolina, Ohio, Pennsylvania, Texas, Virginia, and 
West Virginia. 
In the collections of the National Museum are specimens from the 
following States: District of Columbia, Illinois, Kansas, Maryland, 
Missouri, Nebraska, New York, North Carolina, Ohio, Pennsyl- 
vania, Texas, and Virginia. 
From the following localities it has not yet been recorded, but 
probably does occur as these are neighboring sections of infested 
places: Southern parts of Indian Territory, Tennessee, and Wiscon- 
sin; northern parts of Alabama, Georgia, Louisiana, and South 
Carolina. 
FOOD PLANTS. 
From early records of this insect it is evident that the beetle of 
the grape root- worm was observed feeding upon wild grapes long 
before it was known to infest cultivated varieties. Riley reported 
the beetle feeding upon the leaves of wild grapes and upon the red- 
bud (Cercis canadensis). Several writers have found it feeding 
upon the foliage of the Virginia creeper (Ampelopsis quinquefolia). 
With the extensive cultivation of improved varieties of native 
species of grapes, the insect has found in these a more available food 
plant. The larval form and its underground habits became first 
known through its abundance and destructiveness in vineyards. 
On the wild grapevine the grape root-worm does not breed in 
extensive numbers, because the conditions in woodlands are Less 
favorable than those existing in vineyards. The chances for the 
newly hatched larvae to reach the roots of the wild grapevine are 
greatly limited, since the plants spread their aerial growth exten- 
sively and in such a manner that the parts of the vine above ground 
are not directly above the root system. Tinier such conditions 
numbers of the larva? on dropping to the ground do not reach the 
needed food plant and probably perish. A single female beetle, 
however, lays a considerable number of eggs, and out of the many 
hatching larva? the chances are that always several will survive to 
perpetuate the species. 
In the course of this investigation at North Fast, Pa., several 
attempts were made to locate the larva* on roots of wild grapevines, 
but in no instance were larva 4 found or any signs of feeding observed on 
