. A treatise on some of the insects injurious to vegetation . Insect pests. THE THISTLE BUTTERFLY. 291 folded leaf, and suspend themselves by the hind feet alone when about to transform. The chrysalids are angular on the sides, with two or three rows of sharp tubercles on the back, the anterior extremity is nearly square, or hardly notched, and there is a short and thick prominence on the top of the thorax. The tubercles, and oftentimes the greater part of the surface of the chrysalis, have the color and lustre of burnished gold; from which originated the name chrysa- lis, derived from the Gre
. A treatise on some of the insects injurious to vegetation . Insect pests. THE THISTLE BUTTERFLY. 291 folded leaf, and suspend themselves by the hind feet alone when about to transform. The chrysalids are angular on the sides, with two or three rows of sharp tubercles on the back, the anterior extremity is nearly square, or hardly notched, and there is a short and thick prominence on the top of the thorax. The tubercles, and oftentimes the greater part of the surface of the chrysalis, have the color and lustre of burnished gold; from which originated the name chrysa- lis, derived from the Greek name for gold, now, however, applied to other insects in their second stage of transforma- tion, which are not golden-colored. Cynthia Cardui. Thistle Butterfly. (Fig. 118.) Wings tawny above, with a tinge of rose-red, spotted with black and white; hind wings marbled beneath, with a Fig. triangular white spot in the middle, and a row of five eye- like spots near the hind margin. Expands 2£ to 2£ inches or more. The caterpillars of this butterfly are found on thistles, particularly the spear-thistle ( Cnicus laneeolatus) and cotton- thistle {Onopordon acantMum), on the leaves of the sun- flower, hollyhock, burdock, and other rough-leaved plants, in June and July. Though there may be several on the same plant, they keep at some distance from each other. Each one spins for itself a thin web on the surface of the leaf, usually near the edge, to which it is also fastened, so as to. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harris, Thaddeus William, 1795-1856; Flint, Charles Louis, 1824-1889. Boston : William White, printer to the state
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Keywords: ., bookcentury1800, bookdecade1860, bookpubl, booksubjectinsectpests
