Archive image from page 54 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 CUbiodiversity1121211-9742 Year: 1889 ( GKNEllAL CHAKACTKKISTICS OF OKBWEAVKKs' SNAKKS. and a close observation of her feet will show that the claws grasp, and even draw out somewhat the lines which represent the radii continued. Every motion of the net is thus communicated more readily JVlGsnsQ, Hub through the taut lines to the sensitive feet. The brushes or tufts of del
Archive image from page 54 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 CUbiodiversity1121211-9742 Year: 1889 ( GKNEllAL CHAKACTKKISTICS OF OKBWEAVKKs' SNAKKS. and a close observation of her feet will show that the claws grasp, and even draw out somewhat the lines which represent the radii continued. Every motion of the net is thus communicated more readily JVlGsnsQ, Hub through the taut lines to the sensitive feet. The brushes or tufts of delicate liairs with which these organs are provided, and which are in contact with the lines, must greatly increase the sensi- tiveness of the creature to every movement. This natural telegraphy is, i)erhaps, also aided by a short line extend- ing from the spinnerets to the upper part of the hub. This line is apt to divide into two, or radiate into several branches near the hub. In this l)osition, of , the apex of the spider's abdomen is slightly elevated (Fig. 51). However, the chief design of this habit is probably to hold the aranead to her snare when she rushes after her prey, or to give her a point of attachment for dropping out of the web, or running from it in case of assault, with similar advantage when she may wish to return. 2. The Sheeted Hub is wholly covered by a closely woven sheet of white silk, against which the under part of the spider is placed Hub ® hangs thereon. The type of this form of hub is that made by the Basket Argiope, A. cophinaria, (Walck.), the largest and one of the most beautiful of our indige- nous Orbweavers. It is shown at Fig. 52, where a thick, irregular shield like piece two inches long and one and a half wide, covers the entire hub. Above, it extends in a broad ribbon of the same . . .1 • 1 T '°- 51- Spider suspended at her consistency to the spiral space, a distance of hub, Argiope argyraspis. one and seven-eighths inches; and
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