. A manual for the study of insects. Insects. 268 THE STUDY OF INSECTS. spines along the back, and other shorter ones upon the sides. When not eating, the larvae remain close together, some- times completely covering the branch upon which they rest. This species passes the winter in the pupa state. The adults appear in June and July. The Mocha-stone Moths, Iclithyura (Ich-thy-u'ra).—To the genus Ichthynra belong several species of brownish-gray moths, whose fore wings are crossed by irregular whitish lines. It was these peculiar markings, resembling somewhat those of a moss-agate, that suggest
. A manual for the study of insects. Insects. 268 THE STUDY OF INSECTS. spines along the back, and other shorter ones upon the sides. When not eating, the larvae remain close together, some- times completely covering the branch upon which they rest. This species passes the winter in the pupa state. The adults appear in June and July. The Mocha-stone Moths, Iclithyura (Ich-thy-u'ra).—To the genus Ichthynra belong several species of brownish-gray moths, whose fore wings are crossed by irregular whitish lines. It was these peculiar markings, resembling somewhat those of a moss-agate, that suggested the popular name given above. The larvae feed on poplar and willovv', and conceal themselves within nests made by fastening leaves together. Our most common species is the following:— The Poplar Mocha-stone Moth, Ichthynra inclusa (I. in- clu'sa).—The adult (Fig. 318) is a brownish-gray moth, with the fore wings crossed by three irregu- lar whitish lines. The basal line is broken near the middle of the wing ; and the intermediate one forms an in- verted Y, the main stem of which joins "^x^. z-^ inclusa. the third liuc near the inner margin of the wing, making with it a prominent V. These lines are bordered without by rust-red ; there is a chocolate-colored spot near the apex of the fore wings, and an irregular row of blackish dots near the outer margin. The hairs of the thorax form a prominent crest, the fore side of which is a rich dark brown. The hind wings are crossed by a wavy band, which is Hght without and dark within. The eggs are nearly spherical and smooth; they are deposited in a cluster a single layer deep on a leaf (Fig. 319). When the larvae hatch they make a nest either by fastening several leaves together or, as is the case when they infest poplar, by folding the two halves of a single leaf together; frequently in the latter case the tip of the leaf is folded in as shown in the figure. Within this nest the entire colony lives, feeding on
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsects, bookyear1895
