. A manual for the study of insects. Insects. 3H THE STUDY OF INSECTS. northern portions of the United States. The larva feeds on cabbage. The Checkered White, Pontia protodice (Pon^ti-a pro- tod'i-ce).—The two sexes of this species differ greatly in appearance, the female being much more darkly marked than the male. The wings are white, marked above with grayish brown. There is a bar of this color at the end of the discal cell; beyond this there is in the male a row of three more or less distinct spots, and in the female an almost continuous band of spots. Besides these tliere is in the femal
. A manual for the study of insects. Insects. 3H THE STUDY OF INSECTS. northern portions of the United States. The larva feeds on cabbage. The Checkered White, Pontia protodice (Pon^ti-a pro- tod'i-ce).—The two sexes of this species differ greatly in appearance, the female being much more darkly marked than the male. The wings are white, marked above with grayish brown. There is a bar of this color at the end of the discal cell; beyond this there is in the male a row of three more or less distinct spots, and in the female an almost continuous band of spots. Besides these tliere is in the female a row of triangular spots on the outer margin of both fore and hind wmgs, and on the hind wings a submar- ginal zigzag bar. The larva of this species is colored with alternating stripes of bright golden yellow and dark greenish purple, upon which are numerous black spots. It feeds upon cab- bage and other cruciferous plants, and occurs in nearly the whole of the United States. Both this and the preceding species seem to become greatly lessened in numbers by the increase of the imported Pieris rapce. II. The Orange-tips.—These, like the butterflies compris- ing the preceding group, are udiite, marked with black. Their most characteristic feature is the presence on the lower surface of the hind wings of a greenish network, or a marbled green mottling. This usually shows through the wing so as to appear as a dark shade when the wings are seen from above (Fig. 463). Many species have a con- spicuous orange spot on the api- cal portion of the front wings. This has suggested the common name Orange-tips for the group. But it should be remembered that some species lack this mark, and that in some others it is confined to the males. Nearly Fig. 463.—Synchloe oly7npia. ^^ r • r all of our species are confined to the far West. The two following occur in the Please note that these images are extracted from scanned page images that may have been digitally enhanced for reada
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsects, bookyear1895
