Tank Spider (5e Creature)
From D&D Wiki
large beast, same as the rider (or really close, must have at least one in common)
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.
Flaming Web Shot. Ranged Weapon Attack: +3 to hit, reach 60 ft., one creature. Hit: 4 (1d6 + 1) fire damage and the creature must succeed a Dexterity save or be grappled. The spider can engage in a contest of Strength with the creature when using its bonus action to reel the grappled creature towards it, moving it 5 feet. The grappled creature can make a Strength saving throw (DC10) during each of its turns, ending the condition on success.
Ram. Melee Weapon Attack: +3 to hit, reach 5 ft., one creature. Hit: 4 (1d6 + 1) bludgeoning damage. Increases by 1d6 every two spider rider levels.
These are slow, highly defensive and dextrous creatures with a cool flare to their webbing. They have thicker legs and hardier bodies which can slow them down.