ol. 
swelling usually on each side of 2nd abdominal seg- 
TMETG ees wae Fy ese ta Anacamptodes ephyraria. 
(5) Hemlock, fir, larch, spruce—Head pale whitish, some- 
times reddish brown, with 5 or 6 large and some 
small dots; body whitish with yellow or reddish 
tinge; dotted with black and with 4 dark, wavy, 
hair lines below a yellowish, lateral stripe 
Neptyia canosaria. 
(6) Sugar maple, poplar, beech, etc.—Body light green 
with 3 narrow yellowish-white stripes on each side 
of the body; 2 pairs of prolegs 
Operophtera bruceata. 
(7) Red maple, ete.—Head pale green, slightly bilobed; 
body green, skin much wrinkled, a double, whitish, 
dorsal line bordered by yellowish white lines; 
Spaces between segments yellowish 
lobed; body greenish tinged with reddish brown; 
swelling usually on each side of 2nd abdominal seg- 
Physostegania pustularia. 
(8) White pine—Head slightly brownish; body deep green 
with greenish-white line on the dorsum and a nar- 
row subdorsal and stigmatal white stripe 
Eufidonia notataria. 
(9) White pine, spruce, fir, larch—Head brownish; body 
light green, sometimes brownish above; 2 longi- 
tudinal, light stripes on dorsum between which 
are 2 lighter stripes. ................. Semiothisa granitata. 
(10) Black locust—Body green with many obscure, wavy 
lines giving a reddish tinge 
Semiothisa ocellinata. 
(11) Black and choke cherry—Head and thoracic shield 
dark amber; body blackish above, with 4 longi- 
tudinal lines, and straw yellow beneath; about 20 
MOM Goi yt ee Calocalpe undulata. 
Measuring worms—25 to 50 mm. long 
(1) Alder, beech, yellow birch—Head rather small and 
rather flattened in front; body green to brownish 
with whitish spots on dorsum; spiracles black 
Hyperetis amicaria. 
(2) Birch, maple, oak, walnut, etc—Head brownish, some- 
what mottled; body reddish to chocolate brown, 
with pair of blunt tubercles on top of 8th abdomi- 
Male seoment 5 a ee Ectropis crepuscularia. 
(3) Yellow birch, maple—Head bilobed; body dull brown, 
with lighter and darker blotches; prominent swol- 
len area on top of 6th abdominal segment 
Plagodis serinaria. 
Naked, without prominent tubercles, and with 5 pairs 
abdominal legs. 
(1) Beech, sugar maple, etc.—Head large with broad red- 
ish, lateral band; body yellow green, or light green 
with bluish cast; usually a reddish-brown or pur- 
plish saddle-shaped patch on the back 
Heterocampa guttivitta. 
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