First report of the Board of State Horticultural Commissioners .. . Greedy rapax. 66 This scale seems to be native to the willow and alder, and otherindigenous trees. It, however, is found in great numbers uponacacia trees, upon the black locust and poplar, and upon some ofour orchard trees, as the pear and apple. This scale somewhatresembles the Aspidiotus perniciosus, and by many is confoundedwith it, but it is not to be compared to the latter for destructiveness. Aspidiotus conchiformis.—The one longest known, and whichwas discovered and described in Maine in 1794, has ever
First report of the Board of State Horticultural Commissioners .. . Greedy rapax. 66 This scale seems to be native to the willow and alder, and otherindigenous trees. It, however, is found in great numbers uponacacia trees, upon the black locust and poplar, and upon some ofour orchard trees, as the pear and apple. This scale somewhatresembles the Aspidiotus perniciosus, and by many is confoundedwith it, but it is not to be compared to the latter for destructiveness. Aspidiotus conchiformis.—The one longest known, and whichwas discovered and described in Maine in 1794, has ever since thattime infested the apple tree particularly, although found upon otherfruit trees and upon the currant. This is now found in great num-. Oyster Shell-bark conchiformus. bers upon almost all old apple trees on this coast, and is commonlyknown as the bark louse or the oyster shell scale. It may be founddescribed in works on entomology. This species has not caused somuch injury as to alarm fruit growers to any great extent, althoughit is described by Dr. Packard as doing more injury to the apple treethan any other insect known. COTTONY CUSHION SCALE. Next will be described a comparatively new scale heretofore, butone which has within the last two or three years been ravaging manylocalities in widely different parts of the State. This is the so-called
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