6 FARMERS’ BULLETIN 662. 
blue spots, one on the middle of each segment, and on the anterior 
side of each is a broader, deep velvety black spot. The body-is 
sparsely clothed with fine, soft, yellowish hairs of varying length, 
thickest perhaps toward the anterior end, where they project forward 
over the black-colored head. In about six weeks from hatching the 
larve become full grown and wander away from the nest, as stated, 
in search of suitable places for pupation. 
THE COCOON. 
The larvee select for pupation any convenient, more or less secluded 
place, as under loose bark, in grass or brush under trees, along fences, 
etc. If close to outbuildings the larve often make their cocoons in 
Fia@. 5.—Cocoon and pupa of apple-tree tent caterpillar. About twice natural size. (Original.) 
the angles along the sides, in window casings, etc. The cocoon, 
shown in figure 5, at the left, is oval in shape, about 1 inch long, 
and composed exteriorly of coarse, loose, whitish threads of silk 
surrounding the tougher parchmentlike lining. The silk of the 
cocoon is intermixed with a yellow powdery substance, which readily 
comes off when disturbed. Cocoons are made more or less singly, 
although in suitable shelter near the nest several may be found spun 
together, the larve taking advantage of the same protection. Co- 
coons are frequently found within the nest, although these will 
usually prove to be parasitized. 
THE PUPA. 
Within the cocoon the larva changes to a short, oval, brownish 
pupa, as shown in figure 5, at the right. This stage lasts about three 
weeks, the time varying somewhat; then the moth appears. 
