SPECIES OF THE GENUS TRIGONOCERA BECKER (DIPTERA: DOLICHOPODIDAE)

Systematic information on the Old World diaphorine genus Trigonocera Becker is reviewed. It comprises nine species: T. rivosa Becker (=T. africana Naglis syn. nov.), T. guizhouensis Wang, Yang et Grootaert, T. lucidiventris Becker, T. munroi (Curran), T. obscura De Meijere, T. specialis Becker, T. tongshiensis (Yang), T. ethiopiensis Grichanov sp. nov. from Ethiopia and T. madagascarensis Grichanov sp. nov. from Madagascar. T. biseta Olejní ek is excluded from the genus [Chrysotus biseta (Olejní ek) comb. nov.]. The distribution and diagnostic features of Trigonocera are discussed.