Well that is very Forgotten Realms/D&D sounding due to the spiders, slaves, dislike of the sun and underground.
Dark elves in most versions of fantasy settings are generally assholes so them having slaves is fine. Even in Elder Scrolls they had slaves.
Underground dwelling and dislike of the sun is eh. There's a lot of fantasy races like with similar traits so it's not really a big deal to have them like that, but it means you have to distance yourself even more from their obvious inspiration. Which leads to...
Spider worship. I'd get rid of this one entirely because with the other two traits in place, now they really are just FR drow with the serial numbers filed off. Having them worshipping some eldritch horror would be a perfectly fine substitute what with them living underground being evil and all.
And they sound pretty matriarchical if they got a queen and priestesses running the place. A better way to change that without completely reverse mirroring it would be having an oligarchy running the city and all the council members scheming against each other for various reasons. Scheming and backstabbing are pretty dark elfish without it being specifically linked to FR.