Economic entomology for the farmer Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; economicentomol00smit Year: 1906 244 ''^^^- ECONOMIC ENTOMOLOGY. We have many species of considerable size belonging to the genus Argynnis, which resemble each other more or less by their tawny upper sides 254. marked with black spots, and by having the under sides more or less marked with silvery blotches, es- pecially on the hind wings. None of them are injurious, the larvae feeding upon vio- lets. In the genus Grapta there are s
Economic entomology for the farmer Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; economicentomol00smit Year: 1906 244 ''^^^- ECONOMIC ENTOMOLOGY. We have many species of considerable size belonging to the genus Argynnis, which resemble each other more or less by their tawny upper sides 254. marked with black spots, and by having the under sides more or less marked with silvery blotches, es- pecially on the hind wings. None of them are injurious, the larvae feeding upon vio- lets. In the genus Grapta there are species with C;a/./<j/.r<'.cr''-.'^\viiiKsofTightsirie detached strougly and irregularly to show under side; this is almost like G. angulatcd and tOOthed comma. â â 111 wmgs, quite dark brown in color, with irregular black or blackish blotches, spots, and lines, and a little silvery mark resembling a comma or semicolon on the hind wings beneath. Of these the caterpillar of G. comma feeds upon the hop-vine, although it rarely does any serious injury. It is reddish or yellowish in color, with a black head and black branched spines, and forms an angular chrysalis which is suspended by the tail. The chrysalis is yellowish green in color, with prominently marked segments, and has the thorax produced into a somewhat acute process. Another very common, almost cosmopolitan butterfly, is the Vanessa antiopa, popularly known as the 'mourning-cloak.' It is of a very dark, rich-brown color, with a broad yellowish border on both wings. It winters in the butterfly stage, and may often be seen on warm days in midwinter, fluttering about in the woods, while it is the earliest of the butterflies to make its appearance in spring. The caterpillars feed upon quite a variety of plants, notably willow and poplar, and often in great colonies. When full grown they are two inches or more in length and black, with red-marked, branched spines. The chrysalis is suspended by the tail, and of a somew
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