Bulletin . Fig. 2. Web of Fall Webworms on Apple. 210 N. H. AGR. EXPERIMENT STATION. [Bulletin 139 markings, but the larger ones become quite varied in color, somebeing uniformly yellowish with black and yellow tubercles, whileothers have a dark stripe running down the back and appearalmost black. (Figure 3, a, b). Cocoon and Pupa.—The mature caterpillar finds a secludedcorner under the bark of the tree, or the rubbish at its base, in a. Fig. 3. Fall Webworm (Hyphantria cunea Den.) a. liRht form of full-Krowalarva ; 6. dark form of same ; c. pupa; d. spotted form of moth—all -slightly en-large
Bulletin . Fig. 2. Web of Fall Webworms on Apple. 210 N. H. AGR. EXPERIMENT STATION. [Bulletin 139 markings, but the larger ones become quite varied in color, somebeing uniformly yellowish with black and yellow tubercles, whileothers have a dark stripe running down the back and appearalmost black. (Figure 3, a, b). Cocoon and Pupa.—The mature caterpillar finds a secludedcorner under the bark of the tree, or the rubbish at its base, in a. Fig. 3. Fall Webworm (Hyphantria cunea Den.) a. liRht form of full-Krowalarva ; 6. dark form of same ; c. pupa; d. spotted form of moth—all -slightly en-larged. (After Howard, U. S. Dept. Agr.) fence corner, under the eaves or in the cracks of a building, orsometimes just under the surface of loose soil, and there spinsits cocoon. Very frequently the old cocoon of some other mothis utilized or practically no cocoon is made. The cocoon is aflimsy affair at best, merely a thin covering of silk with whichthe caterpillar mingles some of its hairs as it spins the it the caterpillar sheds its skin for the last time, having July, 1908.] CATERPILLARS INJURING FOLIAGE. 211 already molted four or five times during growth, and the castskin is tucked away at one end of the cocoon. With this moltthe caterpillar has transformed to the pupa, similar to thechrysalis of butterflies. In 1905 the caterpillars pupated aboutSeptember 7. In the pupa stage the insect remains dormantthroughou
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Keywords: ., bookauthornewhampshireagricultu, bookcentury1900, bookdecade1900
