The larval form of the Kwama is the scrib, right? But I'm a little confused, what do they evolve into exactly? The kwama forager looks like a snake-thing, while the Kwama worker looks like a four-legged beast. And then the Warriors and Queens look like a combination of these two (with the forager part attached to their head)

How exactly does all of this tie together?

The larve gets inside the workers, and it changes.

Then where do the workers come from?

eggs

Does the Queen produce both eggs and larval scribs then?

And when the forager join with the worker, do they become one single creature? Or are they still separate entities living in the same body?

They're already colony animals, the differences between each creature are nearly negligable. I'd imagine one of them acts as a magicka resevoir while the other channels, so probably the exact relationship is a kind of symbiosis and blending of thought.

Anyways, I'd imagine that Kwama eggs produce pure scribs and depending on either how/where they're cultivated or on some chemical signal based on the needs of the colony, the scrib differentiates into a worker or forager. Drawing assumptions from bees, the warriors are probably the fertile males and when the colony needs it, a warrior will engorge himself on magick and switch gender to become a queen. They'll take part of the colony off to create a new colony and the queen enters her egg-laying phase.

To simplify: the kwama are pyramid-scheme colony animals where any scrib can grow up to be a queen, but only if all the levels above him are clear.

So where do the gold eggs come from huh? Tell me that smarty-pants.

Gold Kwama.

Egads!