. The butterfly book : a popular guide to a knowledge of the butterflies of North America. Butterflies. I Genus Epargyreus The palpi are profusely covered with thick scales, in which the third joint is almost entirely concealed. The fore wing of the male is furnished with a costal fold; the hind wing is prominently toothed at the extremity of the submedian vein. Egg.—The egg is elevated, hemispherical; that is to say, it is flattened at the base, rounded above, its height being almost equal to the width. It is marked by about ten narrow, greatly ele- vated longitudinal ridges, which sometimes
. The butterfly book : a popular guide to a knowledge of the butterflies of North America. Butterflies. I Genus Epargyreus The palpi are profusely covered with thick scales, in which the third joint is almost entirely concealed. The fore wing of the male is furnished with a costal fold; the hind wing is prominently toothed at the extremity of the submedian vein. Egg.—The egg is elevated, hemispherical; that is to say, it is flattened at the base, rounded above, its height being almost equal to the width. It is marked by about ten narrow, greatly ele- vated longitudinal ridges, which sometimes fork below the summit, and between which are a multitude of fine cross-lines. The micropyle is greatly depressed. Caterpillar.—The caterpillar closely resembles fig. i!;4.—Neu- the caterpillar of the genus Etidamus, but the ration of the genus , . Epargyreus. head is not as strongly bilobed. Chrysalis.—The chrysalis likewise resembles the chrysalis of the genus Eiidainiis ; the cremaster, however, is not as strongly hooked as in that genus. (i) Epargyreus tityrus, Fabricius, Plate XLIII, Fig. 5, i ; Plate II, Figs. 30, 31, 33, larva ; Plate VI, Figs. 22, 25, 26, chrysa- lis (The Silver-spotted Skipper). Butterfly.—This very common and beautiful insect may easily be recognized from the figure in the plate. The broad, irregular silvery spot on the under side of the hind wings distinguishes it at a glance from all other related species in our fauna. Expanse, inches. Early Stages.—These have been accurately described by sev- eral authors, and a very full account of them is contained in "The Butterflies of New ; The caterpillar feeds upon leguminous plants, and is especially common upon the Wistaria, which is grown about verandas, and on the common locust (Robinia pseiidacacia). The caterpillar makes a nest for itself in the same manner as Eudamus proteus. Pupation generally takes place among fallen leaves or rubbish at the foot of the trees u
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