You might enjoy the book Children of Time by Adrian Tchaikovsky

Not sure if you'd count it as social, but the dancing spiders certainly put effort into courtship: https://www.youtube.com/watch?v=5qkzwG2lLPc Peacock spiders, dance for your life! - BBC

I've seen old brick wall with a lot of funnel of spiders. (I'm not sure it's the exact same specie of spider.) They were close, but not in contact of each other IIRC. I guess when there is not enough room they get use to have neighbors and then evolution makes them less grumpy.

There are hundreds of species of social spiders: https://en.wikipedia.org/wiki/Social_spider

There's youtube of: The Process of Making Friends With a Tiny Spider https://youtu.be/i6ucE1cfzmE