Crypt Spider Queen

Cocoon Prey. As a bonus action, a crypt spider can cocoon a creature within 5 feet that is currently restrained by webbing. A cocooned creature has disadvantage on ability checks and saving throws made to escape the web.

Spider Climb. The spider can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Web Sense. While in contact with a web, the spider knows the exact location of any other creature in contact with the same web.

Web Walker. The spider ignores movement restrictions caused by webbing.

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one creature. Hit: 13 (2d8 + 4) piercing damage, and the target must make a DC 13 Constitution saving throw, taking 14 (4d6) poison damage on a failed save, or half as much damage on a successful one. If the poison damage reduces the target to 0 hit points, the target is stable but poisoned for 1 hour, even after regaining hit points, and is paralyzed while poisoned in this way.

Web (Recharge 5–6). Ranged Weapon Attack: +5 to hit, range 30/60 ft., one creature. Hit: The target is restrained by webbing. As an action, the restrained target can make a DC 12 Strength check, bursting the webbing on a success. The webbing can also be attacked and destroyed (AC 10; hp 5; vulnerability to fire damage; immunity to bludgeoning, poison, and psychic damage).

Create Zombie. The crypt spider creates a zombie from a humanoid creature it has killed with its poison. this works like the animate dead spell. except the zombie stays under the crypt spider's control for 1d4 days. At the end of this duration or when the zombie is destroyed, the corpse bursts open, releasing hundreds of crypt spider young (use swarm of spiders statistics). The crypt spider can have no more than four zombies under its control at one time. 

Parry. The crypt spider queen adds 5 to its AC against one melee attack that would hit it. To do so, the crypt spider queen must see the attacker and have more than half its health.