Title: Eastern forest insects
Identifier: easternforestins1175bake (find matches)
Year: 1972 (1970s)
Authors: Baker, Whiteford L. (Whiteford Lee), 1903-
Subjects: Forest insects
Publisher: Washington : U. S. Dept. of Agriculture, Forest Service ; for sale by the Supt. of Docs. , U. S. G. P. O
Contributing Library: U.S. Department of Agriculture, National Agricultural Library
Digitizing Sponsor: U.S. Department of Agriculture, National Agricultural Library

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small spots are on abdominal segments two to seven and four on the eighth. P. cresphontes Cramer feeds on prickly ash in the Northern States. Graphinm mar cellos Cramer, the zebra swallowtail, feeds on pawpaw. FAMILY NYMPHALIDAE Brush-footed Butterflies This family contains some of our most common butterflies. The adults are medium to large and are distinguished by having the forelegs much reduced and without claws. Only the middle and hind pairs are used for walking. The head of the caterpillar is usually bilobed, the tips of the lobes often supporting branched spines, and the body is spiny or bears fleshy, hair-covered warts. The chrysalids are naked and are usually suspended by the cremaster. Polygonia interrogationis (F.), the question-sign feeds on elm, oak, and hackberry in eastern America, especially on sprout growth along roadsides. Full-grown caterpillars (fig. 104) are brownish with yellow mottlings and are about 37 mm. long. Each body segment bears a transverse row of light-colored branched spines. There are two generations per year. P. comma (Harr.), the comma butterfly, occurs on elm, nettle, and hop from Canada to the Carolinas and Texas. Full-grown caterpillars are yellowish white, and each body segment bears a transverse row of branched spines. Nymphalis j-album Bdv. and LeC. feeds principally on gray and paper birches, but also on poplar and willow in Canada and south to Pennsylvania in the Eastern States. Caterpillars have black heads, the body is reddish to blackish on the dorsum with fe£
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F-519524 Figure 104.—Larvae and chrysalis of the butterfly, Polygonia interrogationis, the question-sign. 292

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