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A spider web, spiderweb, spider's web, or cobweb (from the archaic word coppe, meaning "spider") [ 1] is a structure created by a spider out of proteinaceous spider silk extruded from its spinnerets, generally meant to catch its prey . Spider webs have existed for at least 100 million years, as witnessed in a rare find of Early Cretaceous amber ...
Spider cocoon. Spider silk is a protein fibre or silk spun by spiders. Spiders use silk to make webs or other structures that function as adhesive traps to catch prey, to entangle and restrain prey before biting, to transmit tactile information, or as nests or cocoons to protect their offspring.
In 1948, Swiss pharmacologist Peter N. Witt started his research on the effect of drugs on spiders.The initial motivation for the study was a request from his colleague, zoologist H. M. Peters, to shift the time when garden spiders build their webs from between 2:00 a.m. and 5:00 a.m., which was decidedly inconvenient for Peters, to earlier hours. [4]
The underside and head of a female spider. Spiders, unlike insects, have only two main body parts ( tagmata) instead of three: a fused head and thorax (called a cephalothorax or prosoma) and an abdomen (also called an opisthosoma ). The exception to this rule are the assassin spiders in the family Archaeidae, whose cephalothorax is divided into ...
Madonna painting on caterpillar silk, Chester Cathedral. Cobweb painting, sometimes known as gossamer painting, is the delicate process of painting on canvases made from caterpillar and spider webs that have been collected, layered, cleaned, and framed. Fewer than 100 cobweb paintings are known to exist, many of which are housed in private ...
Fill the cup with water and insert a bunch of fresh flowers. 3. Watermelon Pumpkin. For a jack-o-lantern with a spooky red tint, consider hollowing out and carving a watermelon instead! Use the ...
Agelenopsis pennsylvanica lives primarily as a solitary spider across the United States, having been found in at least 21 different states. It is an ambush predator, sitting and waiting for prey in its funnel-shaped web. In this species, the female commonly cannibalizes the male during mating. This small species has been used to study pre ...
File:Spiders web.svg. Size of this PNG preview of this SVG file: 509 × 506 pixels. Other resolutions: 241 × 240 pixels | 483 × 480 pixels | 773 × 768 pixels | 1,030 × 1,024 pixels | 2,060 × 2,048 pixels. This is a file from the Wikimedia Commons. Information from its description page there is shown below.
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