. Eastern forest insects . F-504092 Figure 63.—Larva of the twig pruner, E7aphidionoides villosus, in an oak twig. Note ends of severed twigs. neath bark scales, and the larvae feed beneath the bark during the first year of their lives. During the second year, they bore in the sapwood. Wood used in making rustic furniture is often damaged. E. incertimi Newm., the mulberry bark borer, a species that closely resembles the spined bark borer, breeds in the outer bark of living mulberry trees in Eastern United States. Infesta- tions have also been recorded in oak and hickory. It does not cause seri
. Eastern forest insects . F-504092 Figure 63.—Larva of the twig pruner, E7aphidionoides villosus, in an oak twig. Note ends of severed twigs. neath bark scales, and the larvae feed beneath the bark during the first year of their lives. During the second year, they bore in the sapwood. Wood used in making rustic furniture is often damaged. E. incertimi Newm., the mulberry bark borer, a species that closely resembles the spined bark borer, breeds in the outer bark of living mulberry trees in Eastern United States. Infesta- tions have also been recorded in oak and hickory. It does not cause serious damage. Desmoceras palliatus (Forst.), the elder borer, breeds in elder wherever it grows in eastern United States. Adults are bright, metallic blue with nearly all of the basal half of the elytra yellow, and are about 27 mm. long. The pronotum is much wider than long and is constricted at the apex; the wing surfaces are densely and coarsely punctured. Eggs are deposited in crevices of the bark at the base of the stem. The larvae feed in the roots and base of their host, eating out the pith and filling their mines with coarse, rather fibrous frass. The larval period lasts 2 to 3 years. Heavily infested plants may be seriously injured or killed. Doraschema wildii Uhler, the mulberry borer, breeds in the liv- ing branches of mulberry and osage orange in the Southern and Central States. The adult is dark brown and from 16 to 22 mm. long (fig. 64). The body is covered with fine gray hairs except for small bare punctures scattered over the surface. Each wing cover has a light brown stripe along its outer margin. In the Deep South, adults appear as early as mid-May. Eggs are deposited in niches chewed in the bark. Young larvae feed between the bark and wood, destroying irregular patches of cam- bium up to 2 square inches in area. After about 1 to 3 months they bore into the wood, constructing galleries that angle upward and inward for a couple of inches and then bend back towar
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Keywords: ., bookcentury1900, bookcollectionbiodive, booksubjectforestinsects
