Which disc brake pads do I need for Tektro Auriga?
Not an answer you want to hear, but Tektro parts are very sparse because they are entry level, and low budget. No one really makes parts for them other than tektro. So if its discontinued you may see if a bike shop can make something else fit, but online you will likely not find a match by visual.

Avid or hayes make brakes that are more universally supported.