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Abstract The Central Asian genus Dengitha Reitter, 1887 is briefly reviewed. The following new synonymy is proposed: Dengitha crystallina Semenow, 1896 = Dengitha symmetrica G.S. Medvedev, 1964 syn. nov. ; Dengitha lutea Reitter, 1887 = Dengitha hyalina Semenow, 1896 resyn. Lectotype is designated for D. crystallina . In total, two species of the genus are distributed in Central Asia, occurring on weakly fixed sands with Haloxylon or dunes without vegetation in the Karakum and Kyzylkum deserts. Dengitha crystallina is widely distributed in Turkmenistan (western, central and north Karakum), Uzbekistan (Ustyurt plateau, Kyzylkum) and Kazakhstan (Kyzylkum); Dengitha lutea is known only from the eastern Karakum (Turkmenistan) and Sundukli deserts near the Amudarya River (Turkmenistan, Uzbekistan).
Bekchanov et al. (Mon,) studied this question.