Crystal web spiders represented a certain species of spider, distinguished by their exceptionally sticky crystalline webs. These webs were remarkably adhesive, possessing a strength that even a training lightsaber couldn't penetrate. Nevertheless, a lightsaber operating at full power could sever these webs. The crystal web spider family also featured the significantly larger Spider-King.
Circa 231 BBY, a substantial quantity of crystal web spiders on the starship belonging to safari droid SF-R3 (known as "Aree") were unintentionally set loose within the Tenoo Jedi Temple by Jedi Initiate Kai Brightstar, after the Spider-King startled him. Brightstar, along with Aree and fellow Initiates Lys Solay and Nubs, successfully used biscuits that the spiders liked as bait to coax them back onto Aree's vessel. While Jedi Master Zia Zaldor Zanna and her Padawan Wes Vinik were absent on a mission, the spiders rapidly spun a multitude of webs throughout the temple, ensnaring many individuals inside. Despite his initial trepidation, Brightstar, the other Initiates, and Aree managed to recapture the spiders before the Spider-King could finish constructing his nest, enabling Aree to move them to their new habitat.