. Eastern forest insects. Forest insects. COURTESY CONN. AGR. EXPT. STA. Figure 29.—The tuliptree scale, Tourneyella liriodendri, on yellow- poplar. COURTESY CONN. AGR. EXPT. STA. Figure 28.—The magnolia scale, Neolecanium cornuparvum, on magnolia. Jersey to Nebraska and the Dakotas. Its favored hosts appear to be Scotch and jack pines, but it also feeds on several other pines. Austrian pine is fairly commonly attacked. Infestations have also been found on red pines growing among or adjacent to heavily infested jack pines. Mature females are reddish-brown, oval, very convex, and about 6 mm. lo
. Eastern forest insects. Forest insects. COURTESY CONN. AGR. EXPT. STA. Figure 29.—The tuliptree scale, Tourneyella liriodendri, on yellow- poplar. COURTESY CONN. AGR. EXPT. STA. Figure 28.—The magnolia scale, Neolecanium cornuparvum, on magnolia. Jersey to Nebraska and the Dakotas. Its favored hosts appear to be Scotch and jack pines, but it also feeds on several other pines. Austrian pine is fairly commonly attacked. Infestations have also been found on red pines growing among or adjacent to heavily infested jack pines. Mature females are reddish-brown, oval, very convex, and about 6 mm. long. Males are tiny, fragile, and winged U69). Partly-grown females spend their first winter on twigs. Growth is completed by June or earlier of the following year, and each female deposits about 500 eggs under her body. Hatching occurs in June or July, and the young larvae begin feeding on the twigs immediately. A white, powdery substance develops on the margins of the larvae. Male adults emerge in about 3 weeks and fly in search of immature females with which they mate. A few days later, the males die. The female continues to develop slowly until late fall, then goes into hibernation. There is one generation per year. Pole sized stands of pine are occasionally severely infested, but seedlings and young saplings usually suffer the greatest damage. Heavy feeding may result in considerable branch mortality or the death of entire trees. Damage in Christmas tree plantations in the Midwest is often severe. In heavy infestations, a large per- 104. 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 Baker, Whiteford L. (Whiteford Lee), 1903-. Washington : U. S. Dept. of Agriculture, Forest Service ; for sale by the Supt. of Docs. , U. S. G. P. O
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Keywords: ., bookcentury1900, bookcollectionbiodive, booksubjectforestinsects
