File:PSM V06 D666 Spider web spinning apparatus.jpg

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English: View of the Spinning Apparatus of Hyptiotes americanus (correct synonym according to the World Spider Catalog: Hyptiotes cavatus), from below and in Front. : A, the lower surface of the abdomen ; v, the vent or outlet of the intestine, opening through a papilla; a, one of the anterior pair ; p, one of the posterior pair; m, of the middle and smaller pair; x, a low oval projection just in front of the spinners, which seems to correspond to the fourth pair in other species (cribellum); s s, the silk from the anterior spinners, uniting to form one line, but capable of drying so as to form the two strands of the double interradial. I do not know from which spinners the various parts of the net are formed.
Date between 1874 and 1875
date QS:P,+1874-00-00T00:00:00Z/8,P1319,+1874-00-00T00:00:00Z/9,P1326,+1875-00-00T00:00:00Z/9
Source Popular Science Monthly Volume 6, page 646.
Author Unknown authorUnknown author
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