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Title: Pine Tortoise Scale
Author: MacAloney, Harvey J.;
Source: Forest Pest Leaflet 57. [Broomall, PA]: U.S. Dept. of Agriculture, Forest Service, Northern Area State & Private Forestry
Publication Series: Miscellaneous Publication
Description: The pine tortoise scale (Toumeyella numismaticum (P. & M.)) is a soft scale that periodically causes a noticeable amount of mortality of hard pines. Although it was not described until 1920, when it was found on Scotch pine, in northern Wisconsin, there is evidence that it had caused injury much earlier in a number of localities in this and other States. Scale damage, noted on Scotch pine and jack pine at St. Paul, Minn., for several years prior to 1904, has since then been attributed to the pine tortoise scale. The insect itself was first reported in eastern Nebraska in 1911. It was probably brought into Nebraska on infested wildling jack pine seedlings from Wisconsin used to establish an experimental planting in 1891.
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MacAloney, Harvey J. 1961. Pine Tortoise Scale. Forest Pest Leaflet 57. [Broomall, PA]: U.S. Dept. of Agriculture, Forest Service, Northern Area State & Private Forestry
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