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The building of a web is an engineering feat, begun when the spider floats a line on the wind to another surface. The spider secures the line and then drops another line from the center, making a "Y". The rest of the scaffolding follows with many radii of nonsticky silk being constructed before a final spiral of sticky capture silk.
The spider then grabs the prey using its first three pairs of legs, and bites it. Consequently, if no further vibrations (either threadborne or airborne) are detected once the spider has entered the hub of the web, Z. x-notata will actively vibrate the web to detect motionless dead prey or dirt particles hanging in the web. This "web-jerking ...
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The web of Cyrtophora exanthematica. The spider stays in the middle of the lower orb web hanging upside down. [5] When it feels threatened, however, it will run to the edge of the web and hide among the vegetation and debris. [11] The spider has a sanctuary at the edge of the web surrounded by dead leaves which it can use to camouflage itself. [5]
Male is smaller than female. Male spins a web around the female's web, which is known as a companion web. After the mating, as in other common spiders, female kill the male. Female lay eggs on the companion web and wrap them up into a sac. Spiderlings eat each other in the sac until the strongest spiderling break the sac wall. [3]
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Uroctea durandi is a Mediterranean spider [1] about 16 mm in length, dark in color with five yellow spots on its back. It lives under rocks, where it constructs an upside-down tent-like hanging web about 4 cm in diameter. From each of the six openings two signaling threads protrude.