77). A larval parasite, /chneumon navus Say, appears to be the major natural 
controlling agent for this looper (338). 
Iridopsis larvaria (Guenée) feeds on aspen, paper birch, alder, and other decid- 
uous plants in the Northeastern States and southern Canada. Full-grown larvae are 
yellowish green to light brown and 20 to 25 mm long. There is a reddish band on 
the second abdominal segment, several reddish diamond-shaped formations on the 
dorsum, and a pair of blunt tubercles on the eighth abdominal segment (783). 
F-532013 
Figure 76.—Adult female moth of Anacamptodes 
pergracilis. Note extended ovipositor, which is used to 
insert eggs in bark of baldcypress. 
tit tin 5 HE Al 
F-532014 
Figure 77.—Anacamptodes pergracilis pupae in cells in 
bark of baldcypress. 
Ectropis crepuscularia (Denis & Schiffermuller), the saddleback looper, feeds 
on the foliage of a wide variety of trees, especially conifers, from coast to coast in 
southern Canada. South of Canada, it is usually found on hardwoods such as birch, 
maple, oak, poplar, and walnut. Full-grown larvae are reddish to chocolate brown 
and 25 to 30 mm long. The head is somewhat mottled, and there is a pair of blunt 
tubercles on the eighth abdominal segment. Larvae are present from May to 
September in the Northeastern States and the winter is spent in the pupal stage in 
the ground. 
Epimecis hortaria (F.) occurs on sassafras and yellow-poplar in the Atlantic 
Coast States. The adult is either dark colored to almost black or light gray with a 
dusting of brown. The forewings are marked with lines and the wingspread is about 
192 
