. 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. Spiders. THE PEATHEKPOOT SPIDER, ULOBORUS PLUMIPES. 179. Fig. 167. Unfinished web of Uloborus Walckenaerius. (After Emerton.) The same author says that the spiral lines of Hyptiotes and Uloborus have a strong, smooth thread through the centre. That of Hyptiotes, which he examined fresh, had the finer . part arranged in reg- Thread "^^^ leaves or scallops, in whicli the separate fibres could not be distinguished. The thread of Ulobo
. 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. Spiders. THE PEATHEKPOOT SPIDER, ULOBORUS PLUMIPES. 179. Fig. 167. Unfinished web of Uloborus Walckenaerius. (After Emerton.) The same author says that the spiral lines of Hyptiotes and Uloborus have a strong, smooth thread through the centre. That of Hyptiotes, which he examined fresh, had the finer . part arranged in reg- Thread "^^^ leaves or scallops, in whicli the separate fibres could not be distinguished. The thread of Uloborus, at least when old and dried, had the loops longer and less regular, and he had not been able to distin- guish the separate fibres except at the edges of the band. To my eye the spiral seemed to be a single continuous flocculent fil- ament without any supporting thread, thus differing from Hyp- tiotes. But of this I am not confident. Under a common hand lens it has a milky or filmy hue. The position of the spider upon lier .snare is very much like that of Tetragnatha. I have found her stretched out underneath the hub, with . the legs extended fore and aft almost in a straight line with the on Snare. ^'^^°"^^ decorations to which the feet clung. Sometimes, how- ever, she turned and hung beneath the hub at a position at right angles with the ribbon. One young specimen, captured upon lier snare, I saw repairing the ^^ . broken margins of her web. It was done line after line, one Snare. radius and one spiral at a time, precisely in the manner common to other Orbweavers. The broken lines were cut out, and new ones substituted, or were picked up by the spider's feet, spliced, and stretched into position. She worked very deftly and rapidly. I saw her capturing a small insect, a gnat. The two hind legs were used for rapidly pulling out the enswathing thread, while tlie second and third legs re- volved the insect and held it to the web. According to Hentz, Uloborus has the hab
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectspiders, bookyear1889
