Archive image from page 81 of American spiders and their spinning. American spiders and their spinning work. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits CUbiodiversity1121211-9810 Year: 1889 ( 80 AMERICAN SPIDERS AND THEIR SPINNINGWORK. Fig. 43. Section view of cocoon of Argiope cophinaria. fe, flossy envelope inside the outer case, oc; , the brown padding; , the cup or dish against which the eggs (e) are deposited; , cap covering the egg cup ; , suspen- sion cord. is filled with a (Figs. 43, 44, ) is us
Archive image from page 81 of American spiders and their spinning. American spiders and their spinning work. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits CUbiodiversity1121211-9810 Year: 1889 ( 80 AMERICAN SPIDERS AND THEIR SPINNINGWORK. Fig. 43. Section view of cocoon of Argiope cophinaria. fe, flossy envelope inside the outer case, oc; , the brown padding; , the cup or dish against which the eggs (e) are deposited; , cap covering the egg cup ; , suspen- sion cord. is filled with a (Figs. 43, 44, ) is usually a thin, stiff, parchment like substance, that feels dry, and crackles under the touch, as though glazed. It is substan- tially water tight. I have found several cocoons of a softer material, and thicker, much like a delicate yellow felt. The glazing above mentioned is not the result of ageing or weathering simply, but is produced by the action of the spider herself, perhaps by the overspreading of the viscid secretion which forms the beads on the spirals of a snare. When this outer case is cut away there is first pre- sented a flossy envelope () of soft yellowish silk, which quite surrounds the contents of the bowl. Next is a dark brown pyrifonn or spherical pad of spinningwork (), which swathes the eggs completely, interposing a thick, warm, silken blanket between them and the external case. On the upper part of this pad is a plate or cup (), of like color and closer texture, with the concavity down- ward. I have at least once found this to be a whitish disk of stiff silk. The neck or stalk (nk) of the cocoon compact silken cone (), of a yellowish or brown color, which is united at the base to the egg plate (), and at the top terminates in a strong twisted cord (), which sometimes extends upwards and forms the central support to the cocoon. Next to the brown i)ad is often a thin flossy envelope, which surrounds the egg sac. The latter is a rather closel
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