I just call them Leuco's. Eartheater is a bit too broad as a common name (considering it governs the whole genus of Satanoperca, as well as Geophagus, Guinacara, Gymnogeophagus, etc.) and S. jurupari is a different species from the same family as you know, and calling them that will merely prolong the mislabling of the species.
Feed sinking pellets, substrate needs to be sand, and they'll love it if you crush up pellets and force them to scavenge the substrate for food (don't make it their entire dieet). Don't feed Beefheart excessively as their livers can't process it correctly, and they're very fond of live Earthworms and Blackworms.
Edit: Just for corrections sake, it's Satanoperca leucosticta.