Deuteronomous magnarius (Gn.), the notched-wing geometer, 
is widely distributed in southern Canada and the Northern States. 
It feeds on many species of hardwoods such as white ash, bass- 
wood, maple, aspen, white birch, beech, willow, and elm. The adult 
is yellowish and has a wingspread of about 60 mm. The forewing 
has a reddish tinge, is thickly flecked with brown dots, has a con- 
spicuous lobe near the middle, and is shaded with brown on the 
outer margin. Mature larvae are yellowish-green and about 50 
mm. long. Reddish areas occur on the tops of segments two and 
five and on the venter of segment three. Adults deposit eggs dur- 
ing August and September. Winter is spent in the egg stage. 
Hatching begins in May, and larvae are present from May to 
July or August. This species is sometimes fairly abundant but is 
seldom of economic importance. 
Tetracis lorata Grote occurs on wild cherry in the Northeastern 
States. Full-grown larvae are about 37 mm. long. The head is 
grayish, flattened, and square in front; the body, reddish-brown 
with white markings and a black line running down the middle 
of the back after the fifth segment. Tubercles are also prominent. 
Larvae are present from July to September, and winter is spent 
in the pupal stage. 
Abbottana clemataria (J. E. Smith) occurs on basswood, 
maple, trembling aspen, paper birch, wild cherry, and hemlock 
in southeastern Canada and the Middle Atlantic States westward 
to the Mississippi River Valley. Full-grown larvae are purplish 
brown and up to 60 mm. long. The head is rounded and bilobed; 
the second and fourth abdminal segments are swollen on top; and 
there are prominent tubercles on the fifth and ninth abdominal 
segments. Larvae feed from June to August, and winter is spent 
as pupae in cocoons in leaves on the ground. 
Prochoerodes transversata (Drury) occurs on various hard- 
woods such as maple, oak, willow, trembling aspen, paper birch, 
and mulberry in southern Canada and eastern United States. 
Full-grown larvae are light to purplish-brown and about 50 mm. 
long. The head is rounded and flattened in front; the second thor- 
acic segment is swollen and streaked with red; and the eighth 
abdominal segment bears a pair of prominent tubercles. Larvae 
feed from June to October; winter is spent in the pupal stage; 
and there are two generations per year. 
The pepper and salt moth, Biston (=Amphidasis) cognataria 
(Guen.), occurs in the Northeastern States where it feeds on elm, 
willow, poplar, black locust, wild cherry, and apple. The adult is 
dark brown to black and has a wingspread of about 55 mm. Full- 
grown larvae are about 50 mm. long. The head is deeply cleft, 
granulated, and flat in front; there are tubercles on each side of 
the prothorax and on the fifth and eighth abdominal segments. 
Larvae feed from July to October, and winter is spent in the 
pupal stage in the ground. 
Campaea perlata Gn. is a common species in the Northeastern 
United States and Canada, and the larvae feed on balsam fir, 
hemlock, and many species of deciduous trees. Protobarmia por- 
celaria Wlk. is also a common species in Northeastern forests, 
where the larvae feed on a wide variety of trees including balsam 
fir, white spruce, larch, jack pine, birch, aspen, and willow. 
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