. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. go INSECTS INJURIOUS TO THE APPLE. lish alder, red currant, and hazel; also on the hickory, birch, elm, honey-locust, barberry, hawthorn, and elder. During the winter their cocoons should be looked for and destroyed; the larvae also may be subdued by hand-picking,—• their work, as well as their appearance, being so conspicuous that they are readily detected. No. 29.—The Unicorn Prominent. Coelodasys unicornis'(Sm. & Abb.). The larva of this moth is a very singular-looking creature. (See Fig. 78.
. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. go INSECTS INJURIOUS TO THE APPLE. lish alder, red currant, and hazel; also on the hickory, birch, elm, honey-locust, barberry, hawthorn, and elder. During the winter their cocoons should be looked for and destroyed; the larvae also may be subdued by hand-picking,—• their work, as well as their appearance, being so conspicuous that they are readily detected. No. 29.—The Unicorn Prominent. Coelodasys unicornis'(Sm. & Abb.). The larva of this moth is a very singular-looking creature. (See Fig. 78.) It is reddish brown, variegated with white, on the back, with a large brown head ; the Fig. 78. sides of the second and third segments are green, and from the top of the fourth a prominent horn is projected. There are on the body a few short hairs, scarcely visible to the naked eye ; the posterior segment, with the hindermost pair of feet, is always raised when the insect is at rest, but it generally uses these feet in walking. In August and September this larva may be found nearly full grown. At first eating a notch, about the size of its body, in the side of the leaf on which it is feeding, and placing itself in this notch, with the humps on its body somewhat resembling the irregularities in the margin of the partly-eaten leaf, it is not easily detected. Eventually it consumes the entire leaf, except a small portion of the base. When mature, it measures from an inch to an inch and a quarter in length, and, while generally solitary in its habits, sometimes three or four are found together eating the leaves of the same twig. Besides the apple, it feeds on the plum, dogwood, rose, alder, and winterberry. When full grown, which is towards the end of September, it descends from the tree, and under fallen leaves on the ground constructs a thin, almost transparent, papery cocoon, with bits of leaves attached to the outside. A considerable time elapses after the cocoon is for
Size: 2208px × 1132px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookpublisherphila, bookyear1883
