Firing actions after create a new blog (using Pro Sites)

I'm using the plugin Pro Sites to offer new sites for my customers. But, I need to register some taxonomy terms after that new blog is created. Looking about how to do this, I found, in the codex, the wpmu_new_blog function, but I need pass the blog_id to run my function.

What is the way to get the blog ID to run my function?

Any help will be appreciated.