. The butterflies of the eastern United States. For the use of classes in zoology and private students. Butterflies. J 8 THE BUTTERFLIES OF THE IAmenitis Disippus presents on the ridges of the cells numerous little filaments, giving; the Fig. 1. & & egg a bristly appearance (see Fig. 60). In all these there is a cluster of irregular cells at the summit or apex that differ from the others, often being situated at the bottom of a cavity or depression. This portion Microp^i^fegg of Co- of the egg is known as the micropyle. Ha* Phiiodice. x 6o. Butterflies vary in their manner of depositin
. The butterflies of the eastern United States. For the use of classes in zoology and private students. Butterflies. J 8 THE BUTTERFLIES OF THE IAmenitis Disippus presents on the ridges of the cells numerous little filaments, giving; the Fig. 1. & & egg a bristly appearance (see Fig. 60). In all these there is a cluster of irregular cells at the summit or apex that differ from the others, often being situated at the bottom of a cavity or depression. This portion Microp^i^fegg of Co- of the egg is known as the micropyle. Ha* Phiiodice. x 6o. Butterflies vary in their manner of depositing their eggs. Some place them singly on the leaves of their food-plant, while others lay them in clusters, from a dozen to a hundred in a cluster. In the case of Vanessa Antiopa, Fig. 54, they are placed around a small twig of willow. The Papilios, with the ex- ception of P. Philenor, deposit their eggs singly. The Graptas lay their eggs in strings or singly. Usually the manner of depositing the eggs may be taken as an index of the, larva's being gregarious or feeding singly. The time of the egg period, or the time from deposi- tion to hatching, varies in different species, depending somewhat upon the temperature. In some species they hatch in from three to four days, as in Grapta, Colias, and Pieris. The Papilios and Danais Archippus hatch in from four to six days; Phytiodes Tharos, in from four to seven days; P. Nydeis, in twelve; IAmenitis Disippus, in from five to eight; Argynnis Diana, in fifteen; A. Oybele, Aphrodite, Alcestis, and Atlantis, in from fifteen to twenty, etc.; while, according to Mr. S. H. Scudder, there are some species that pass the winter in the egg 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 French, G. H. (George Hazen), 1841-1935. Philadelphia, J. B. Lippincott Company
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherphila, bookyear1896
