You find an old latin text referring to the Aranea (latin for spiders).
"We called the beings in the old hills Spiders, for that is what they most closely resembled to us. Physically they are like the little spiders who make webs in our gardens, but with some important differences. Unlike true spiders they have 10 limbs, 8 being traditional legs, and 2 ending in hands with long, skeletal fingers. They have high-domed, manlike skulls with two large, black eyes ringed with three smaller eyes underneath each one. Their mouth parts more closely resemble those of a beetle. Generally, their body is not segmented like a spiders, though their legs are, and their head rests on a short neck. They seem to be covered in a coarse, leathery hide as opposed to a hard armor. This appearance often goes unnoticed due to their abilities, which shall be discussed shortly. Infants are not much bigger than large house spiders, but adults can be almost the size of men. Queens are bigger, some being as large as cattle."
"They feed in much the same way as spiders, having a powerfully toxic bite, and wrapping their prey in webbing produced from their abdomen. We have discovered only well-fed Spiders possess these abilities, so it is likely a byproduct of their digestion, or requires raw material to create. We have not determined how much of each material a feeding produces within them. Unlike true spiders they are not solo hunters or feeders of opportunity. They travel in packs, and with the exception of the newly born are very intelligent. While the young are little more than clever beasts, the fully grown Spiders are fiendishly clever, easily capable of outwitting the average man."
"The Spiders live in great hives, much like ants. They generally build their nests in hills or mountains near the cities of men, as they consider us a resource. It also makes assault upon their homes much more difficult. We know little of their society, but have discovered that only one of them is capable of producing eggs at a time. We refer to them as Queens, and if one dies, one of her children seems to replace her. You will know the Queen, for she is bloated and ugly, and the others will give their lives to defend her. We say her, despite the fact that the Spiders have no obvious genitalia, and do not appear to need them. The Queen rules the hive, and appears to gain immense physical and mental power at the cost of 'her' races ability to camouflage. They were parasites who fed of our efforts, as we were forced to make sacrifices to them to survive. The Spiders must lay their eggs within living beings for them to gestate, and for this purpose we were forced to give them men and women, as well as cattle to feed upon. They would only communicate with those of us who could learn the old ways, for they are not capable of physical speech, though their arts allow them to mimic such."
"Beware the Spiders, for they are very adept at the Old Arts once they attain the right age. They can wear other beings larger than themselves in much the way we wear clothing, in order to manipulate them from inside like a puppet. They use this to walk among us as adults. This is fairly common, and it does not appear solely to find prey, bodies for their young, or to enforce their rule. Their young use it to inhabit men and animals in order to get close to us to feed, but they are hardly masters of their craft. They cannot speak and move stiff and awkwardly. It often seems as though something is moving under the skin of those they infest. They can only inhabit dead hosts, and are only capable of keeping the body viable for a short time before it's degeneration renders it useless. The adults are much better, showing little sign of their handiwork, and capable of using the body to speak."
"They are masters of the mind, often communicating with us in dreams or waking nightmares. Illusion and glamers are their foremost art, and they travel through Doors with ease. These abilities laid waste to our defenses, and in truth we only rid ourselves from them when the stars turned, and the Arts were rendered useless. When the stars are right again, they will visit our world again. These records must be kept for this future day, lest the Spiders be forgotten."