Spider webs can stick to any bug, why wouldn t they stick to the spiders themselves?

Maybe it's because there are still things on the spider's feet that don't stick to themselves, but they can stick to other bugs

Because the skin of the spider itself is made of special material, it will not be stuck by the spider web that it spits out, and it is a smooth structure, and you can walk on the spider web at will.

Here's why spiders don't get stuck in their own webs:

1. Spiders are very familiar with the "topography" of their own webs. The spider's web is made up of longitudinal filaments that are radial and transverse filaments that are spiraling. The longitudinal filaments are not sticky, while the transverse filaments are sticky, so spiders generally move on the longitudinal filaments.

2. In order to avoid accidentally touching the transverse filament and getting caught, the spider will secrete an oily substance and rub it onto the body. This way, the spider won't get stuck in its own webs.

There are a variety of reasons. Here's why:

One. Different physiological structures of spiders:

First, the spider only places droplets of glue on certain threads of the large web it weaves, and they tend to avoid these threads as they move around the web. Secondly, spiders touch the web with their toes, which have a small contact area, and they have a non-stick coating on their toes. In addition, spiders have special claws at the end of each foot that can grasp the web and pull it towards the elastic hairs on the spider's legs.

When the claws are released, the elastic hairs push the spider web silk away, preventing it from sticking.

Spiders are familiar with their webs, and when they start weaving, they know exactly where they are safe and how to avoid sticky areas to ensure that they don't get caught. Spiders secrete oil from the soles of their feet, so they can walk freely even if they accidentally touch sticky spots. And in order to make the whole web functional, the spider will constantly repair the broken parts, and eat the useless web, and absorb the nutrients contained in the spider silk repeatedly.

Two. Characteristics of cobwebs:

However, not all silk in cobwebs is sticky.

As shown in the figure above, the silk capture is the viscous silk. Spiders can also secrete a type of oil that will not be stuck for a while.

Some of the webs themselves are not sticky, like ghost spiders.

Although the webs weaved by different species of spiders often vary, there are generally two types of spider silk: radial spider silk and oval spider silk. When spiders build webs, they first build radial skeleton silk threads --- longitudinal filaments. The longitudinal filaments are mainly used to support the spider web structure, which is strong but non-sticky.

After the skeleton is completed, the spider then weaves a spiral of silk in a counterclockwise direction, which scientists call a transverse filament. If you look closely, you'll see that there are water-dropping bumps on the strands, called sticky beads, and their stickiness makes it difficult for insects that intrude by mistake to get out.

Three. The "brilliance" of spiders:

If you look closely, you'll also see that the webs are usually not perpendicular to the ground, and spiders only touch the webs with their burrly feet. In this way, the whole body hangs from the cobwebs, further reducing the possibility of getting caught.

In case it hits a sticky horizontal filament, the spider will perform a trick "unique move". Everyone knows that oiling is the best way to make the surface of an object non-sticky. Spiders secrete an oily substance that spreads it on their bodies, especially their feet, and it is this oily substance that keeps it from sticking even when it touches a horizontal filament.