EN
Mroczkowskiella gen. nov. is proposed, with the type species Rhinosomphus albolineatus Hustache, 1919. The genus Decophthalmm Chevrolat, 1878 is monotypic. D. venustus (Faust, 1886) [= Epilaris venusta Faust, 1886] and D. venustulus Hustache, 1939 [= D. venmtus Hustache, 1931, nec Faust] are new synonyms of D. albiventris Chevrolat, 1878. Lectotypes are designated for Epilaris venusta Faust and D. venustus Hustache.