You are a Humanoid. You are also considered a Monstrosity for any prerequisite or effect that requires you to be a Monstrosity.

You are Large

Your walking speed is 30 feet and your climbing speed is 30 feet or equal to your walking speed

You can see in dim light within 120 feet of you as if it were bright light and in darkness as if it were dim light. You discern colors in that darkness only as shades of gray.

You have advantage on saves against being charmed, and magic can’t put you to sleep.

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

You don't need to sleep, but meditate semiconsciously for 4 hours a day. While meditating, you can dream after a fashion; such dreams are actually mental exercises that have become reflexive through years of practice. After resting in this way, you gain the same benefit that a human does from 8 hours of sleep.

The drider ignores movement restrictions caused by webbing.

You have disadvantage on attack rolls and on Perception checks that rely on sight when you, your target, or whatever you are trying to perceive is in direct sunlight.

You can cast the darkness and faerie fire spells with this trait.  Once you cast either of these spells with this trait, you can’t cast that spell with it again until you finish a long rest. You can also cast these spells using any spell slots you have.

Intelligence, Wisdom, or Charisma is your spellcasting ability for these spells when you cast them with this trait (choose when you select this race).