. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 56o Bulletin 170. shroud or cocoon, composed of silken threads, in which are mixed the hairs from its own body and the whole is given a powdery- appearance by the caterpillar ejecting a liquid which becomes a yellowish powder upon drying. A cocoon is shown in figure 103. Within this cocoon the caterpillar soon changes to the curious brown object—a pupa—shown at p in figure 102. In about ten days or two weeks after the cocoon is spun, or during the latter
. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 56o Bulletin 170. shroud or cocoon, composed of silken threads, in which are mixed the hairs from its own body and the whole is given a powdery- appearance by the caterpillar ejecting a liquid which becomes a yellowish powder upon drying. A cocoon is shown in figure 103. Within this cocoon the caterpillar soon changes to the curious brown object—a pupa—shown at p in figure 102. In about ten days or two weeks after the cocoon is spun, or during the latter part of June, there emerges from it the adult insect—a buff- brown colored moth marked viith a slightly darker band across each front wing ; ;;^ and/in figure 102 represent the male and female moth respectively. The moths fly mostly at night and are often attracted to lights. Soon after emerging, the female moths deposit their eggs in masses of about two hundred each around the smaller twigs, as shown at e in figure 102. The eggs are covered with a varnish- like substance ; at^ in figure 102 is shown an old, hatched egg- mass with the varnish-like coating worn off. The eggs thus deposited early in July will remain unhatched until the following April. Thus there is but one brood of the caterpillars in a year. A very important difference in habit between the forest and the apple tent caterpillar should here be emphasized. It is this: A colony or family of forest tent caterpillars hatching from the same egg-cluster, like their near relatives, work and live together during most of their life dtit they never make any tent or nest. The only approach to a web made by the forest tent caterpillars is a thin carpet spun on the bark or sometimes over several terminal leaves on which the whole family spun 'by a Forest usually rest in a cluster (as shown Tent Caterpillar in a maple in figure 104) during the day or when they are shedding their J^M > 1 } leaf, s
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