Why don't spiders stick to their webs like other insects do? How do they kill their prey when it is stuck in the web?

From

http://www.austmus.gov.au/spiders/toolkit/silk/stick.htm


Spiders keep their bodies clear of web surfaces, especially those made with catching silk – they also have areas in their webs, like the hub of an orb web or the retreat funnel of a window spider's web, which lack catching silk. When moving about in the web, the spider has only a tiny area of its body in contact with the silk lines - the tips of its legs. For example, orb weavers clasp a silk line using only the middle claw and the adjacent toothed bristles on the leg tips. This small contact area, aided by regular cleaning of the leg tips (watch a spider drawing its legs through its jaws) and the probable secretory lubrication of the claws, combine to ensure that spiders don't stick to their webs.

Many such question can be answered through search engines like Google.

Spiders kill their prey in the web by spinning a nice soft comforting blanket of silk around it, then they plunge their fangs into it and suck out the body fluids, and if you want more details you will have to get them from another source, yuk!

Catty (so thankful she was never asked to disect a spider)