. Bulletin. Agriculture -- New Hampshire. AGRICULTURAL EXPERIMENT STATION 141 the most common of these belong to the willow family, the leaves of all species of willow and poplar (Fig. 2) being eagerly de- voured. Original colonies are also frequently found upon spe- cies of the oak family, the birch being, in fact, one of the more common food-plants, while the oak (Fig. 3), hazel, and alder form no slight item in the bill of fare. The only other orders on which original colonies were found were the barberry and dogwood families. Col- onies with egg-masses oc- curred commonly on bar- berry bus
. Bulletin. Agriculture -- New Hampshire. AGRICULTURAL EXPERIMENT STATION 141 the most common of these belong to the willow family, the leaves of all species of willow and poplar (Fig. 2) being eagerly de- voured. Original colonies are also frequently found upon spe- cies of the oak family, the birch being, in fact, one of the more common food-plants, while the oak (Fig. 3), hazel, and alder form no slight item in the bill of fare. The only other orders on which original colonies were found were the barberry and dogwood families. Col- onies with egg-masses oc- curred commonly on bar- berry bushes, and a single tent with the egg-mass was once found on a species of Cornell. The secondary food-plants were much more varied ; it did not seem to make so much difference what they were so long as they were of a woody nature. Maple, locust, currant, witch hazel, viburnum, and blueberry are all attacked, and each be- longs to a different family. The only case of an herba- ceous diet found was that of a caterpillar in tiie midst of a field, feeding on the com- mon ox-eye daisy. The parasites of the tent caterpillar, as already indi- cated, include many species. The four-winged flies of the genus Pinipla—one of the many groups of ichneumon flies— are among the most important of these. The several stages of life of a Pirnpla parasite are shown in Fig. 4, which was drawn under the writer's direction, when he was connected with the Ohio Experiment Station, and is here used by courtesy of the. Fig. 3- Oak leaf eaten by Tent Caterpillars. (Original.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original New Hampshire Agricultural Experiment Station. [Hanover, N. H. ] : New Hampshire Agricultural Experiment Station
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