occurs from coast to coast in Canada. It has also been recorded 
from Maine, Pennsylvania, Georgia, Illinois, and Arkansas. Its 
hosts include paper birch, willow, oak, basswood, elm, boxelder, 
~ alder, and wild cherry. 
Archips rosanus (L.), an introduced species, occurs in south- 
eastern Canada, British Columbia and from New England to the 
Lake States. The larvae are general feeders on a number of de- 
ciduous growths. Privet appears to be especially attractive. Adults 
are dull light-brown to olive-brown and have wingspreads of 17 
to 22 mm. Full-grown larvae are dull green and about 18 mm. 
long. The larvae tie together two or more leaves at the tips of 
twigs or branches and feed on them during May and June. 
The ugly-nest caterpillar, Archips cerasivoranus (Fitch), occurs 
from coast to coast in the Northern States and southern Canada. 
Its preferred hosts are choke and black cherry, but it may also be 
found on a wide variety of other hardwoods. The adult is dull 
orange and has a wingspread of 18 to 25 mm. The forewing is 
irregularly speckled with dark reddish-brown and has three 
patches of the same color. The hindwing is solid, bright orange. 
Full-grown larvae are yellowish or greenish yellow except for 
black heads and cervical shields and are about 20 to 23 mm. long. 
Winter is spent in the egg stage. Hatching begins in May, and 
larvae are present until September, depending on location. They 
live together in dense nests they construct by webbing twigs and 
leaves together (fig. 148). In heavily infested areas, these nests 
F-519520 
FIGURE 148.—Nest of the ugly-nest caterpillar, 
Archips cerasivoranus, on wild cherry. 
