. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 56 The larva is of the usual noctuid type, resembling in general aspect some of the cutworms, with no peculiar characters which will readily identify it. (See PI. VI, tigs. 1 and 2.) It varies so much in color that considerable study was necessary before a good detailed descrip- tion could be drawn up. It was found convenient to choose one of the predominating forms as a type and refer other varieties to it. The following is a description of this especially common form: Body dark, the ground color pale ocher-yell
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 56 The larva is of the usual noctuid type, resembling in general aspect some of the cutworms, with no peculiar characters which will readily identify it. (See PI. VI, tigs. 1 and 2.) It varies so much in color that considerable study was necessary before a good detailed descrip- tion could be drawn up. It was found convenient to choose one of the predominating forms as a type and refer other varieties to it. The following is a description of this especially common form: Body dark, the ground color pale ocher-yellow; the upper side brownish, marked with nine (or seven) fine interrupted longitudinal lines of yellowish white, includ- ing the median line. The latter bordered with broader lines, which are slightly darker than the ground color. The upper side stripes dull orange or brown, as wide as the lower or stigmatal stripes, which are pale yellow and con- spicuous. Thoracic segments paler. Head reddish-yellow or brownish, spotted; the cervical shield varying from red- dish-yellow to shining black, more or less marked with whitish or with a pale dash along each side. Anal shield obsolete. Body beneath pale, with glaucous median and Fig. 5.—Head of boll- lateral stripes (absent in the first three stages). Tubercles Avorin ar\a—ven ra shining black, i and ii« on first and second abdominal seg- view (original). ^ i • ^u • x.^x. vj • i ments and i on the eighth abdominal segment more con- spicuous, those behind the ninth segment concolorous with the body. Thoracic legs black, prolegs pale. This color type is very constant in all larvae through the first two instars, fairly so in stages three and four and in many larvas until maturity. During the first three instars a midventral row of orange spots is invariably present, becoming faint in IV^ and disappearing in V. In the first three instars the anal shield is dusky and complete. In the first instar (and sometimes in the second, i
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