. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. THE BAG-WORM. 27 Mississippi. Nortbward, it is occasionally found in New Yorii and even Massachusetts, but so rarely and locally restricted that neither Dr. Harris nor Dr. Fitch mention it in their publications on economic en- tomology. Wherever it occurs it prefers the gardens and parks within or near the cities, being much less abundant in the woods remote from cities, and tliis dependence upon the vicinity of human civilization is more marked in this species than in any of the others here treated of. FOOD-PLAN
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. THE BAG-WORM. 27 Mississippi. Nortbward, it is occasionally found in New Yorii and even Massachusetts, but so rarely and locally restricted that neither Dr. Harris nor Dr. Fitch mention it in their publications on economic en- tomology. Wherever it occurs it prefers the gardens and parks within or near the cities, being much less abundant in the woods remote from cities, and tliis dependence upon the vicinity of human civilization is more marked in this species than in any of the others here treated of. FOOD-PLANTS. The Bag-worm is known to feed on a large number of trees and shrubs, but has a predilection for certain kinds of coniferous trees, notably the lied Cedar and Arbor Vitai, and as these evergreens are much less able to stand the loss ot their foliage than the deciduous trees, the worms are much more dangerous to the former than to the latter. The Hard Maples are, as a rule, avoided by the worms, and it is also Quite notice- able that they are not particularly fond ot oak leaves and those of the Paulouias. The Ailanthus trees are also generally exempt from their attacks, either on account of the unpleasant taste of the leaves, or per- haps on account of the compound nature of the leaves, the worms fast- ening their bags to the leaf stems which fall to the ground in Fall. With these exceptions,* the worms, when sufficiently numerous, do great damage to most other kinds of trees used in our cities as shade and park trees. ENEMIES. The Bag-worm is so well protected in all its stages that no insectiv- orous bird nor predaceous insect is known to attack it. In spite of. Fig. 11.—Pimpla nonqiiinitor: n. larva: 6, head of do ftoni front; c, pupa: (i, aduli. f^niiile (liair )in<' inrtioatinu: natural size) : f, end of male abdomen froni above; /. same fioni the side—all enlaified. the absence of predaceous enemies, the Bag-worm suffers from the attacks of at least six true para
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