A new and little known species of Palaearctic Sericini (Coleoptera: Scarabaeidae: Melolonthinae)
<i>Cycloserica ustinovi</i> Gusakov, <b>sp. n.</b> is described from Tajikistan (Jarteppa). <i>Serica incurvata</i> (Nomura, 1971) is recorded from Russia (Kunashir Island, Tret’yakovo) for the first time. New synonymy is established: <i>Omaloplia r. ruricola</i> (Fabricius, 1775) = <i>Homaloplia kiritshenkoi</i> Medvedev, 1952 <b>syn. n.</b>