Why does `pg_lsclusters` not list my Postgres cluster?

Question

1. I apt-get installed Postgres 9.2.4 (using PPA).
2. I used pg_dropcluster --stop 9.2 main to remove the default database cluster, because I intended on creating a new cluster on a separate SSD volume (a Rackspace block storage volume) that was just mounted.
3. I created that new cluster whose data resides on my SSD volume and started it (ps shows all the normal Postgres processes running for that new cluster and I'm able to open a Postgres shell and run SQL - i.e., it's running fine). Now when I run pg_lsclusters there are none listed.

The main cluster listed just fine before I deleted it. Why won't my new cluster show up, even when it's running? I've even rebooted the server (just in case).