FRINGED-WING APPLE-BUD MOTH.
Fig. 23.
The following is condensed from bulletin No. 42, written by Prof. J. M. Stedman, entomologist of the state university, Columbia, Mo.: The fringed-wing apple-bud moth is a new and heretofore undescribed species of insect, increasing rapidly and infesting new areas. The best spray to destroy them is, one pound pure Paris green, three pounds of fresh lime, and 150 gallons of water, constantly agitated while spraying. First application as soon as the buds open sufficiently to give the tree a green tinge; second, five days later; third, at time flower-buds open; if it rains do it over at once. Kill the worms before they eat into the bud. The egg is very small, light yellow, and oval, and apt to escape notice. The young worm is also very small when hatched and of a light yellow color, which afterwards turns to pale green, a shining black head, and a brown spot (which soon turns black) back of the head. It has three pairs of dark-colored true legs under its fore parts, and five pairs of prolegs under the rear three-fifths of the body. As soon as hatched they begin to feed on the unfolding leaves, and at once crawl to the heart of the expanded flower or leaf-bud.
The destructive effects cause the tree to look as if swept by fire, owing to the brown and partly developed foliage. See [fig. 24]. These worms ([fig. 21]) complete their growth in about four weeks, enter the earth, and, passing one or two inches below the surface, spin a cocoon. They come out as adult moths in about six weeks, or about the middle of July. [Fig. 22] is the moth enlarged; [fig. 23], natural size. The females soon begin to lay eggs, singly, on the young apple leaves. From these eggs a second brood is hatched more quickly than the spring brood. This second brood often eats through the heart of the terminal bud into the twig. When grown, this second brood enters the ground as did the first, but do not come forth as adults until the following spring.