THE STRIPED PEACH WORM. 3 
FOOD PLANTS. 
Previously published notes have recorded G. confusella as feed- 
ing only on peach foliage. During July, 1915, the writer observed 
a webbed condition on sand cherry (Prunus pumila) (Pl. IV) 
which resembled somewhat the injury already noted on peach (PI. 
T), though the webs were more tightly bound and less silk was ob- 
servable. The injury was so extensive and uniform over a sand- 
cherry thicket of about 15 acres in extent at this place near St. 
Joseph, Mich., that it seems probable that this is the native host plant 
of the insect. 
FEEDING HABITS OF THE LARVA. 
The larva feed either singly or gregariously on both host plants, 
and, though not voracious feeders, by their well-developed web- 
bing habit include in their webs much foliage that is not used as 
food. The larve begin webbing directly after hatching, even before 
they feed, and usually spin the first thin white web on the underside 
of the leaves next to the midrib. They begin feeding next to the 
midribs of the leaves, first eating small irregular holes through the 
parenchyma and later skeletonizing either or both leaf surfaces. 
CHARACTER OF INJURY ON PEACH. 
The injury to the peach is caused by the feeding of the larve on 
the foliage. The webs spun by the larve are loose, with considerable 
silk showing, and are often very conspicuous. The leaves soon be- 
come dry and cease to function, when included in the webs. 
CHARACTER OF INJURY ON SAND CHERRY. 
The webs on the sand cherry are small and compact, with only a 
little silk showing, but in the fall the infested terminals and branches 
become prematurely brown and conspicuous. Feeding is confined to 
the foliage, and, although in rare instances the webs are constructed 
about fruit, in no cases have larve been observed to feed on the 
fruit. Larve of varying sizes are found in the same webs, indicat- 
ing the probability of repeated oviposition in the same terminal. 
From 2 to 12 larve are usually found in the webs on the separate 
terminals, although the number is sometimes as high as 30. In most 
cases observed when there was only one web on a branch it was 
located at the terminal, but when more than one was present the 
webs started from the base as well as from the terminal. As the 
larvee enlarge the webs, they extend them along the branches, gradu- 
ally including more and more foliage. 
