Transactions of the American Entomological Society, 34. köideSociety at the Academy of Natural Sciences, 1908 |
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Common terms and phrases
abdomen abdominal segment antennæ apex apical basal impressions basal joints blackish bristles broad broadly brown brownish carinate cheeks cilia closely punctured clypeus coarsely punctured color compound eyes convex costal streak coxæ dark margined densely dilated distinct distinctly dorsal streak dorsum elytra Evania eyes face female femora flagellum forewings front furcula fuscous genus gray grooves hairs hind angles Hyptia impunctate inner margin Kieffer legs Length Lithocolletis longitudinal malar space male mandibles mark median mesonotum mesopleuræ mesothorax metanotum metatarsus middle tibiæ narrowed narrowly nearly nervures oblique occiput ocellate puncture ocelli outer ovipositor pale palpi petiole piceous pleuræ posterior tibiæ postscutellum pronotum propodeum prosternum Prothorax pubescent punctate reticulate rounded rufous rugosely scape Schletterer scutellar stria scutellum setigerous punctures shining sides silvery slightly smooth species specimens spot stigma striæ striate strongly punctured tarsi tegulæ third joint thorax tibiæ transverse veins vertex whitish Wings hyaline wrinkled yellow yellowish
Popular passages
Page 267 - In most cases, however, an especially prepared silkenslined chamber is formed. After the floor of the mine is loosely covered with silk, the upper epidermis is fastened down in a circular or oval outline, and the whole cavity is then lined with silk. Ample space is provided by a characteristic oval or hemispherical projection upon the underside of the leaf. The change to pupa occurs in the spring. The moths of this group may easily be recognized by the fact that the white markings of the...
Page 267 - ... backward ; all of these marks are posteriorly dark margined, the dark margin of the last costal and dorsal streaks almost meeting in the apical part of the wing ; apex dusted with dark brown on a white ground. Thorax pale golden, with a white streak from its anterior margin to the apex. Head, tuft, palpi and antennse silvery white, each joint of the antenna..
Page 266 - The larva of the flat group (Plate XX, Fig. 10) is very much depressed, almost flat, with the sides of the segments projecting, thus giving the entire larva a beaded appearance. The head is flat, somewhat triangular in shape, usually of a shining reddish brown color, with the mouth parts projecting in front. The first three segments of the body are broader than the others; the body tapers toward the posterior end.
Page 267 - ... character until after the seventh moult. The larva then lines the loosened epidermis with silk and by contraction produces from one to three narrow folds or ridges. Beneath this folded portion the floor of the mine is thinly covered with silk. Then the larva, lying on its back, spins a flat semi-transparent sheet of silk, oval or nearly circular in shape, attached around its edges to the floor of the mine (Plate XX, Fig. 12). Beneath this, along its long axis, the pupa is formed. The pupa, which...
Page 267 - This mode of feeding is a necessary accompaniment of the flattened head, the larva being able to consume but a few layers of parenchyma cells directly in front of it. The mine retains its flat blotch-like character until after the seventh moult. The larva then lines the loosened epidermis with silk and by contraction produces from one to three narrow folds or ridges. Beneath this folded portion the floor of the mine is thinly covered with silk. Then the larva, lying on its back, spins a flat semi-transparent...
Page 221 - The mine may be oval or circular, or in a few cases, nearly rectangular in shape, sometimes limited by two veins. Usually the larva feeds from the circumference inwardly; sometimes it begins at one end, and sometimes it feeds irregularly in spots. With the exception of ostensackenella, which leaves the mine to pupate, the pupa is formed within the mine, and may or may not be enclosed in a cocoon. In the latter case, it is usually suspended in the mine by a thin meshwork of silken threads. Where a...
Page 267 - ... spins a flat semi-transparent sheet of silk, oval or nearly circular in shape, attached around its edges to the floor of the mine (Plate XX, Fig. 12). Beneath this, along its long axis, the pupa is formed. The pupa, which is protruded from the mine in emergence, is thrust through a transverse slit near one end of the flat cocoon. Such a cocoon is formed in all but a few of the species of which the life history is known. In almost all of the species, however, this cocoon is ouly made in the brood...
Page 267 - Forewings reddish orange, with three silvery bands, black margined externally, the second about the middle of the wing, angulated, with the black margin broad and produced posteriorly on a whitish ground, nearly to the third, which is somewhat interrupted in the middle ; the first midway between the second and the base of the wing and also angulated near the costa. The apical portion of the wing white, covered with dispersed black scales, with a few black scales on a whitish ground, on the costa,...
Page 221 - These streaks or fascise are usually margined with darker scales toward the base; the internal margins of some of the streaks are sometimes lacking. In a few species some or all of the streaks or...
Page 220 - ... with appressed hairs. Our representatives fall naturally into two distinct and well defined groups, identical, however, in structural details of the imago. The first, comprising those species having a cylindrical larva, agrees closely with the European species in emhryonic stages and in type of markings of the imago.