Hay seven poisonous spiders that may worry us if they bite us in Spain. We are going to see it a little throughout the following article. Although only three should worry us about their sting.
Let's go see all these spiders and We will talk about the most poisonous in Spain, but also the most poisonous in the world.
How are spiders poisonous?
Actually, most spiders are poisonous, although few of them are dangerous for humans. It would be best to try not to touch them, especially if they are brightly colored. A good tip is to know the dangerous spiders in the country or the area where we live, which will probably be one or two at most. This way, we'll be warned and know if we might be in danger.
To this day too there are recognition applications of the arachnid species we have in front of us and thus know whether or not they are dangerous. For more information, you can visit types of spiders in Spain or explore more about it in general.
What is the most poisonous spider in the world?
It is a spider known as "Brazilian Wanderers" or "Banana Spiders". They come from South America in the areas near the Tropic of Capricorn.
They are spiders between 13 and 15cm, they are aggressive and have the most powerful venom that can cause lethal doses that They cause respiratory problems and a muscular reaction that leads to asphyxiation and total paralysis.

Source: wikipedia
What to do before a spider bite?
If we think that the spider can be dangerous, the first thing we should do If it is possible to capture the spider (without killing and crushing it) to be able to identify it and know the antidote to use. If this isn't possible, a photograph could also be helpful. And go directly to the emergency room to administer the antidote.
If we are in a place where there are no dangerous spiders, it will be enough to wash the bite area with soap and water before applying ice to reduce possible swelling and redness. If you experience more serious symptoms, it is advisable to seek information on most poisonous animals to have a broader knowledge.
If necessary you can take any pain medication as long as we do not see that the reaction may be allergic, in that case we must see a doctor immediately.
In the case of bite in children, the elderly or people in weak health or if there is an excessive reaction, go to the doctor As quickly as possible is the best option.
Most dangerous spiders in terms of the venom of their bite in Spain
In Spain there is a very variety of arachnids. We can see many of them on a daily basis at home, the field, the park, etc. Although some are more complicated to see. In any case, none of them are dangerous spiders or tarantulas.
Mainly there are seven spiders whose bite can hurt us, although only a couple of them can lead to health complications. Let's look at the three most poisonous first and then we will talk about the rest until we complete the seven most poisonous in the country.
loxosceles rufescens
It is a common spider in homes, it is known as a "corner spider", and it generally does not bite. Of course, if it were to bite it can cause edema and in severe cases cause tissue necrosis. It is the one that should worry us the most since it can be very dangerous for children, the elderly or people with a weak state of health.

Latrodectus tredecimguttatus
It is known as the "European black widow", it can reach cause neurotoxic symptoms When it bites, the symptoms are fevers, cramps and body stiffness. Does not cause death like its American relative, so we should not worry in that sense. Although she is still dangerous.
It is the second most poisonous spider in Spain, depending on the amount of venom it injects into the bite, the symptoms will be much more acute. We can find it in rocky areas with dry moors and in grassy areas. Above all, they are more aggressive and its poison is most potent during the fall.

lycosa tarantula
It is the largest spider in Spain (and in Europe), the venom from its bite can cause very annoying wounds comparable to a bee sting.
It is also known as "wolf spider", it can measure between 2,5 and 3 cm. They are found on stony and sunny slopes, especially in the east. The venom of his bite It should not present complications as if the previous two could be.

Other poisonous spiders from Spain
Cheiracanthium punctorium
Its bite is something More painful than a wasp's. Sensitive people may experience skin reactions and a mild fever. For more information about different types of spiders, visit .
calpeian macrothele
Like the previous one, it is a large spider that bites only when disturbed and can cause erythema (redness) and pain in the zone. Generally, shortly after the bite, much of what it causes subsides.
Florentine Segestria
This spider has a characteristic that makes it very recognizable and that is the chelicerae (tool like “fangs” that they have in front of their mouth to defend themselves). This spider has green color almost phosphorous. Its bite causes intense pain and the body feels general discomfort.
Triangular Steatode
It is the so-called "false widow" due to its appearance similar to that of black widows. Its bite is powerful, painful and can cause redness, itching, cramps and even nausea. All these symptoms, however, should disappear after 6 hours from the moment of the bite.