American spiders and their spinningworkA natural history of the orbweaving spiders of the United States, with special regard to their industry and habits . y envelope, which surrounds the egg latter is a ratlier closely si^un pouch ofvariable tenacity, and whitish or pinkishwhite color, that encloses the thousand ormore eggs which lie in a globular mass with-in the heart of the cocoon. The inner eggsac (e) is attached above to the plate or cup(), which, after the spiderlings hatch, ispushed upward by them not unlike a traj)-door, permitting them to creep out into thesurrounding padd
American spiders and their spinningworkA natural history of the orbweaving spiders of the United States, with special regard to their industry and habits . y envelope, which surrounds the egg latter is a ratlier closely si^un pouch ofvariable tenacity, and whitish or pinkishwhite color, that encloses the thousand ormore eggs which lie in a globular mass with-in the heart of the cocoon. The inner eggsac (e) is attached above to the plate or cup(), which, after the spiderlings hatch, ispushed upward by them not unlike a traj)-door, permitting them to creep out into thesurrounding padding, leaving their whiteshells within the sac. The plate serves to support the eggs, whichare probably oviposited upward against female, confined within a box, got so farin the construction of her cocoon as to spinthe plate, but went no farther, leaving, how-ever, this evidence of the point at which her ovipositing would have genus Argiope is widely distributed throughout the globe, and thecocooning habit of the species has elsewhere the same characteristics as inAmerica. Argiope fasciata of Southern Europe and Northern Africa makes. Fig. -H. Cocoon of Cophinaria dissectedto show the parts. Letters as in Fig. 43. MATERNAL INDUSTRY: COCOONS OF ORBWEAVKRS. 81 a cocoon nuicli like that of our Copliinaria. Fig. 4G shows tlie extenialcase, and Fig. 45 gives a section view of tlie central egg sac, supported inthe midst of a bunch of loose flossy silk. I have found numbers of Coi)hijiarias cocoons on vacant city lots inPhiladelphia, strung to the stems of tall weeds on either side of a welltraveled footimth. The mothers had safely passed through theMass ^^ pPiils of assaulting boys and voracious birds, and left thesetokens of their maternal care in this conspicuous spot. As faras examined the cocoons contained broods of healthy spiders. One excep-tion, however, permitted me to see the position and structure of the eggmass. It is a hemispherical mass five-sixteenths of
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectspiders, bookyear1890
