Rusvelo appears to be an all-Russian team linked to Cycling Russia, more about the Olympics than anything else. It is only indirectly linked to Katyusha (Katyusha's feeder is, and continues to be, Itera-Katyusha). It appears to be a continuation and building up of the main body of the Russian national team that had been entering many stage races such as Murcia, Asturias, Qinghai Lake and so on, with a few prospects from the Russian domestic scene too. A few Itera-Katyusha guys there too; seems like the cream of the crop go on to Katyusha, the second tier go to RusVelo.
I don't know if they're linked to the old Lokomotiv team that used to do many of the same races, or the new Lokosphinx team that features a few of the other riders from those national teams - Sergey Shilov and Sergey Belykh being particularly notable in this respect with results in the Spanish domestic scene.