Key, descriptions, data on distribution and host plants are given for all 16 known species of Solenoxyphus Reuter, 1875, including three new ones: Solenoxyphus anabasius, n. sp. (Kazakhstan), S. salsolae, n. sp. (Mongolia), and S. kerzhneri, n. sp. (Kazakhstan, Kyrgyzstan). The generic name Solenoxyphus Reuter, 1875 is synonymized with Leucopterum Reuter, 1879. The following new synonymies are established: L. candidatum (Reuter, 1879) = L. longicolle (Reuter, 1879), S. lepidus (Puton, 1874) = S. minor Wagner, 1969, and S. alkani Önder, 1975 = S. markevichi Putshkov, 1978. S. adspersus (Reuter, 1904) is removed from synonymy and considered a valid species.
