New species lurking (Patreon)

Evelyn had gratefully accepted the generous gift from the stranger potion mixer, who had promised her the "greatest costume ever" with a broad grin.

When she took the dusty garment out of its box, the room filled with a strange, musty smell, which Evelyn did not notice - she was too happy not to have to worry about an outfit for the upcoming Halloween party.

She posed proudly in front of her mirror, oblivious to the many tiny spiders that began to crawl out of all the folds and seams of the costume.

By the time she felt the little creatures biting her all over, it was already too late: a disgusting, shaggy fur immediately began to grow around the bite marks and soon filled the whole room in a musky stench. Between her legs, Evelyn noticed disgusting claws that began to stimulate her most private parts.

Finally, a monstrous abdomen grew out of her ass, which after a short time began to squeeze streams of slimy eggs out of her cunt in front. Massive hairy breasts with dark nipples slowly grew out on her chest and all along her torso, until a long row of 4 pairs hung flabbily in front of her.

In disbelief, the young woman looked at her once delicate fingers: they had turned into monstrous, 3-limbed claws, with ugly yellowed nails at each end. Unable to satisfy herself with these clumsy limbs, Evelyn allowed the drooling claws in her private parts to take care of touching her pussy from now on.

Soon, Abigail's face was also covered in stinking fur, her mouth deformed into a clawed mouth, she was only able to emit shrill inhuman screams.

She had become an aracna, a silent servant of the Doomwidows, bred to protect her mistress' palace with her brood.