. Insects, their ways and means of living. Insects. THE CATERPILLAR AND THE MOTH The fresh silk is a liquid formed in two long, tubular glands extending far back from the head into the body of the caterpillar (Fig. 1^4, SkGI). The middle part ot each tube is enlarged to serve as a reservoir where the silk liquid may accumulate (Fig. 155 A, Res); the anterior narrowed part constitutes the duct (Del), and the ducts. Fig. i$$. The silk glands and spinning organs of the tent caterpillar A, the silk-forming organs, consisting of a pair of tubular glands (G/, G/), each enlarging into a reservoir {Re
. Insects, their ways and means of living. Insects. THE CATERPILLAR AND THE MOTH The fresh silk is a liquid formed in two long, tubular glands extending far back from the head into the body of the caterpillar (Fig. 1^4, SkGI). The middle part ot each tube is enlarged to serve as a reservoir where the silk liquid may accumulate (Fig. 155 A, Res); the anterior narrowed part constitutes the duct (Del), and the ducts. Fig. i$$. The silk glands and spinning organs of the tent caterpillar A, the silk-forming organs, consisting of a pair of tubular glands (G/, G/), each enlarging into a reservoir {Res), and opening through a long duct (Dct) into the silk press (TV), with a pair of accessory glands (glands of Filippi, GIF) opening Into the ducts B, side view of the hypopharynx (Hphy) with terminal parts of right maxilla (Mx) and labium {Lb) attached, showing the silk press {Pr), its muscles, and the ducts {Dct) opening into it, and the spinneret (Spt) through which the silk is discharged from the press C, upper view of the silk press {Pr)> showing the four sets of muscles (Mcls) inserted on its walls and on the rod-like raphe (Rph) in its roof D, side view of the silk press, spinneret, raphe, and muscles E, cross-section of the silk press, showing its cavity, or lumen {Lum), which is expanded by the contraction of the muscles [287]. 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 Snodgrass, R. E. (Robert E. ), 1875-1962. New York Smithsonian Institution series
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Keywords: ., bookauthorsnodgrassrerobert, bookcentury1900, booksubjectinsects
