A new genus and species, Sananicoccus nanophytoni gen. & sp. nov., is described and illustrated based on its adult female, adult male, first-instar nymph and pupa, collected on the leaves of Nanophyton erinaceum (Pall.) Bunge (Chenopodiaceae) from Xinjiang. The new genus is similar to the genus Synacanthococcus Morrison, 1920, but differs by the absence of ostioles and dorsal cerarii, and no cerarii situated on a prominent sclerotized area.