Why do spiders come into the house
Why spiders like to come into the house
Spiders are often uninvited guests who feel very comfortable in houses. So if you have a problem with it, you should also be interested in why the spiders like to sit in their own four walls. With this knowledge, the problem can then be better combated and the spiders can be kept outside as far as possible.
What reasons the spiders have to come into the house and which species prefer to do so is described in the following article.
Warmth and drought as important reasons
In spring and summer the spiders find good conditions outside. Relatively little wind facilitates the construction of the web and the warm temperatures are also suitable for most species of spiders. In addition, there is a wide range of food available, as the insects like similar temperature conditions and are therefore present in large numbers. When it gets windier and colder in autumn, the animals are not happy and they look for retreats. Houses and apartments are very popular because they are ideal for retreating. Except for the food supply, houses initially only offer advantages for the animals. It's windless, warm and dry. Therefore, going into the house is not really surprising.
Increased activity in autumn
Another important reason why the spiders find their way into the house in autumn of all times is that they are simply more active in autumn than in other months. This is due to the animals' increased mating behavior. Many animals generally already live in the immediate vicinity of houses. When the male specimens then go in search of female animals, the path often leads into the house. It is very difficult to prevent this when the house is in good standing. The animals then keep coming back and can also overcome some obstacles.
Attraction by light
Spiders themselves are not directly attracted to light. Some specimens even avoid this and prefer the shade. However, many spiders notice, directly or indirectly, that insects are attracted to light. It is not conclusively clear whether the spider then orientates itself directly on the light or uses other senses and thus tracks down the insects. However, very bright light is particularly attractive, as more insects then orient themselves in the direction of the light than with softer light sources.
The great angle spider
Most often, only two species of spider enter the house. These two species are related and are commonly known as house spiders. One of these species is the Eratigena atrica, or the large angle spider. It is particularly noticeable due to its size, as it is the largest native spider of the genus angle spiders in Europe. They can be recognized by their size of up to two centimeters and a relatively large body. The brownish color and the slightly lighter markings on the top of the spider are also typical features.
The angle spider kills its prey with the help of poison. Theoretically, the poison can penetrate thin areas of the human skin. However, the whole thing only happens in isolated cases and causes short swellings with little pain, which do not cause permanent damage.
The house angle spider
The other of the two predominant species is the Tegenaria domestica, or house corner spider. It is also one of the native species in Europe and is therefore generally counted among the house spiders. Visually, it differs from the large angle spider in that it is slightly smaller. The largest specimens are just under an inch tall. The body is also a bit lighter overall. Nevertheless, it is not always easy to distinguish the spider species from each other, which is not important for most house residents either.
In general, the rust-red angle spider and the wall angle spider are also counted among the house spiders. The field angle spider and forest angle spider are visually similar, but are not officially referred to as house spiders.
The most popular ways into the house
Since the spiders are often on the walls of houses, the easiest way is through open windows. Even very small gaps are enough for the eight-legged friends to gain access. Often, however, they do not sit directly in the apartment, but first of all in the basement. Not only are the conditions partially better there, but the spiders are also much less disturbed. From there, other ways into the apartment can be found, so it is not surprising if there are spiders in the apartment even though the windows were closed or there were mosquito nets.
Once spiders set out to mate, they won't fail to walk into the house. Then they keep coming back in creative ways, if the existing conditions are right.
Spiders come into the house because of the existing conditions inside the house and because of an active mating behavior. The large angle spider and the house angle spider in particular are species in Europe that gain access to the house.
Article image: © FotoTU / Bigstock.com
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