. Circular. Insects. 7 ington, D. C. In 1886 it was reported from Lafayette, Ind. In 1889 it was observed to be injurious at St. Charles, Mo. Soon after- wards it was recognized as a pest at St. Louis, where it attracted considerable attention. DESCRIPTION AND DISTRIBUTION. The adult of this species (fig. 3, a) differs considerably from that of the American rose slug, as will be readily seen by a comparison of the illustrations of the two forms. It is a larger insect and a mem- ber of a different genus. The wing expanse is about one-half of an inch for the female; a little shorter for the male
. Circular. Insects. 7 ington, D. C. In 1886 it was reported from Lafayette, Ind. In 1889 it was observed to be injurious at St. Charles, Mo. Soon after- wards it was recognized as a pest at St. Louis, where it attracted considerable attention. DESCRIPTION AND DISTRIBUTION. The adult of this species (fig. 3, a) differs considerably from that of the American rose slug, as will be readily seen by a comparison of the illustrations of the two forms. It is a larger insect and a mem- ber of a different genus. The wing expanse is about one-half of an inch for the female; a little shorter for the male. The ground color is black. The antennae are rather stout and acutely pointed, and in. Fig. 3.—Bristly rose slug (Cladius pectinicornis) : a, Adult female; b,, antenna of male; c, larva ; d, head of same ; e, female pupa ; /, cocoon. All enlarged. (Reengraved after Riley, except d, original. the male the proximal joints, or those nearest the head, are pectinate or comb-toothed (fig. 3, 6), which has given rise to the specific name pectinicornis. The egg (fig. 4, a) is white, flattened, rounded, stoutest at the anterior end, and more pointed at the opposite end. It measures about mm. in length. The larva or slug, shown in figure 3, <?, and figure 4, c, d, varies from yellowish to glaucous green, and the whole surface is quite bristly, especially at the sides, a character from which this larva de- rives its common name and which will distinguish it from the other two that feed upon the rose. The length when full grown is a little [Cir. 105]. 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 United States. Bureau of Entomology. Washington, Govt. print. off.
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectinsects
