. Circular. Insects. 2 Although this species was not described until 1898,a the describe)*, Mr. Theodore Pergande, of this Office, had known it since 1872, when it was found upon peach trees at Hillsboro, Mo. FOOD PLANTS. For many years the terrapin scale has been considered a specific: enemy of the peach and has been confounded by many entomologists and others with Eulecanium persicde (Fab.), the preeminent peach soft scale of Europe. At present we know it as infesting a large number of host plants, including man}7 varieties of peach and cultivated plum; various species of wild plums and cher
. Circular. Insects. 2 Although this species was not described until 1898,a the describe)*, Mr. Theodore Pergande, of this Office, had known it since 1872, when it was found upon peach trees at Hillsboro, Mo. FOOD PLANTS. For many years the terrapin scale has been considered a specific: enemy of the peach and has been confounded by many entomologists and others with Eulecanium persicde (Fab.), the preeminent peach soft scale of Europe. At present we know it as infesting a large number of host plants, including man}7 varieties of peach and cultivated plum; various species of wild plums and cherries; Primus simonii; apple; pear; quince; several species of Crataegus; three species of maple, par- ticularly Acer saccharinum}' oriental and western sycamores; Carolina poplar; olive; blueberry ( Vaccinium sp.); Bumelia, and spice bush {Benzoin benzoin). DESCRIPTION. The following technical description is inserted to facilitate the deter- mination of this species by entomologists, or anyone who may have access to a compound microscope. Adult female (fig. 2).—Nearly hemispherical, small, length 3 to mm., exhibiting many of the superficial characters of the hibernating form described above, though showing a tendency to fade rapidly after oviposition until by the autumn she is plain dull yellow or terra-cotta color. Fresh unrubbed specimens are covered by a thin glassy secretion of wax which scales off readily. When cleared by boiling in a solution of potassium hydroxid, the derm is left quite colorless, excepting the brown chitinized anal lobes and a narrow chitinized area surrounding the lobes. Antennae (fig. 3, b) composed of six segments; segment 3, which occasionally shows a pseudo-joint, is FlG" 2-~TerrilT>in equal in length to 4, 5, and 6 together; next in order of length scale {Eulecamu-m 1 ° ' ' ° ' °- nigrofasclatum >: come segments 2 and 1 in order. The antenna? exhibit the ordi- Adult female, nary chsetotaxy. Legs well developed; tibia slightly l
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectinsects
