. Eastern forest insects . COURTESY CONN. AGR. EXPT. STA. Figure 132.—Larvae of the saddleback caterpillar, Si- bine stimulea. Mass. in 1906 {1A9), is still confined to eastern Massachusetts. The adult has a wingspread of 30 to 42 mm. Full-grown larvae are about 22 mm. long and marked with yellow, blue, green, and purple. The larvae feed on a large number of tees, including Norway and sycamore maples, black birch, cherry, apple, pear, plum, oak, aspen, willow, honeylocust, hickory, and hackberry. Adults deposit their eggs either singly or in groups on the undersides of leaves. Young larvae fee
. Eastern forest insects . COURTESY CONN. AGR. EXPT. STA. Figure 132.—Larvae of the saddleback caterpillar, Si- bine stimulea. Mass. in 1906 {1A9), is still confined to eastern Massachusetts. The adult has a wingspread of 30 to 42 mm. Full-grown larvae are about 22 mm. long and marked with yellow, blue, green, and purple. The larvae feed on a large number of tees, including Norway and sycamore maples, black birch, cherry, apple, pear, plum, oak, aspen, willow, honeylocust, hickory, and hackberry. Adults deposit their eggs either singly or in groups on the undersides of leaves. Young larvae feed on the lower epidermis of the leaves; older ones consume all but the larger veins. A full- grown larva forms a cocoon by spinning a network of threads around itself and attaching them to the bark in the forks of limbs or twigs. Later it secretes a fluid which fills the spaces between the threads and hardens. Winter is spent as a prepupa in the cocoon. People are severely irritated when they come into contact with the larva's poisonous spines. The tachinid parasite, Chae- texorista javana B. & G., was imported from Japan against this species in 1929 and 1930 and has exerted a considerable degree of control. Prolimacodes badia Hbn. feeds on various hardwoods such as oak, beech, and black cherry in the Northeastern States and southern Canada. It has also been observed feeding on maple in North Carolina. P. scapha Harr. feeds on wild cherry and black gum in Massachuetts and New Jersey. Sisyrosea textida () feeds on Norway maple and oak; Packardia geminata (Pack.) on wild cherry; and Tortricidia flexuosa (Grt.) on oak, gray birch, and wild cherry in the New England States. FAMILY MEGALOPYGIDAE Flannel Moths The bodies of flannel moths are covered with dense coats of scales and long crinkly hairs. The larvae are also covered rather densely with long soft hairs, with an intermingling of poisonous 348
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Keywords: ., bookcentury1900, bookcollectionbiodive, booksubjectforestinsects
