94 Farmers’ Bulletin 1220. 
ing larvee feeding voraciously on the foliage, which may be stripped 
from the plants when the caterpillars are abundant (fig. 23). By 
August the larve are mostly full grown and have disappeared to the 
ground, where they pupate, remaining in the pupa stage (fig. 24) 
until the following May or 
June. Both caterpillars 
and moths (fig. 24) are 
rather striking in appear- 
ance, and there should be 
no difficulty in their recog- 
nition. 
CONTROL. 
The eight-spotted fores- 
ter can be readily con- 
trolled by the use of arseni- 
cal sprays, such as arsenate 
Pig. 23.—Larva of 8-spotted forester. Somewhat of lead apphed to the 
ese plants as soon as injury is 
first in evidence. The arsenical should be used, preferably in 
Bordeaux mixture, as described in the spraying schedule (p. 74), 
or may be applied in water at the rate of 1 pound of the 
powder or 2 pounds of the paste to 50 gallons of water. For small 
amounts use the 
powdered form at 
the rate of about 
1.5 ounces to 5 gal- 
lons of water. 
THE GRAPE PLUME 
MOTH.” 
During late May 
and June in the 
Northeastern States 
the caterpillars of the grape plume moth frequently attract attention 
by webbing together the terminal leaves and shoots of grapevines, as 
well as the blossom clusters (fig. 25). Although distributed over 
the Atlantic States, it has been the subject of complaint during recent 
years from New Jersey, southeastern New York, Connecticut, Massa- 
chusetts, and Rhode Island. 
Within the webbed-up terminal growth, the greenish hairy cater- 
pillars feed upon the leaves and blossoms, causing some loss in yield 
of fruit. The caterpillars are likely to be prevalent only in vines 
around the home and will not as.a rule do serious damage. The life 
Fic. 24.—Pupa and moth of 8-spotted forester. 
10 Oryptilus periscelidactylus FViteh. 
