. A manual of zoology. Zoology. Fig. 501. Fig. rm. Fig. 501.—Pupa of ;igi(.stri. (After I, eye ; i'. head ; ,5, an- tennfe; A-«, thoracic somites; 7, hind, .y, fore wing ; .'/, legs; w, probo,scis ; ii, ab- dominal somites; J2, spiracles. Fig. 502.—Larva of Sphinx Ugustri. (After Ludwig-Leunis.) ?i, caudal disc ; p^ tho- racic feet; , prolegs. Fig. 503.—Larva (maggot) of blowfly, Musca voniitorUt. (After Leuck:art.) 502) and Tenthreds are brightly colored, the thoracic appendages remaining small, and are reinforced by the fleshy ventral apj^end- ages, the prolegs o
. A manual of zoology. Zoology. Fig. 501. Fig. rm. Fig. 501.—Pupa of ;igi(.stri. (After I, eye ; i'. head ; ,5, an- tennfe; A-«, thoracic somites; 7, hind, .y, fore wing ; .'/, legs; w, probo,scis ; ii, ab- dominal somites; J2, spiracles. Fig. 502.—Larva of Sphinx Ugustri. (After Ludwig-Leunis.) ?i, caudal disc ; p^ tho- racic feet; , prolegs. Fig. 503.—Larva (maggot) of blowfly, Musca voniitorUt. (After Leuck:art.) 502) and Tenthreds are brightly colored, the thoracic appendages remaining small, and are reinforced by the fleshy ventral apj^end- ages, the prolegs or pedes sijurii. The jn-edacious larvae of many beetles and Neuroptera have long thoracic leg.«, strong mandibles, and no prologs. Other beetle larva?, which burrow in wood or live in the earth (fig. 500), have plump whitish bodies, with the legs rudimentary or wholly lacking. These lead to the maggot- like larva3, in which the mouth parts are inconspicuous and the distinction between head and thorax may vanish. Such soft-skinned annulated sacs occur in the bees (fig. 50) and other llymenoptera, as well as in many flies (fig. ); that is, in animals which live in an abundance of food either because of parasitism or because the mother has jirovided plenty. From the outer appearance one would gain the impression that these holometabolous larvaj not only lacked the wings, but that the appendages of the imago were entirely absent or had an entirely different form; farther, that wings, and frequently antenna^, legs, and mouth parts, come into existence at the moment of pupation, and then in remarkable size and completeness. A more accurate investigation shows that the anlagen of all these structures are formed long before jiupation, often at the first molt. The wings. 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 or
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1902
