Two new species of Mycetochara Guérin-Méneville, 1827 (Coleoptera: Tenebrionidae: Alleculinae) from the Northern Cis-Azov region and the Northwestern Caucasus (Russia) with a new synonymy and a key to species of the European part of Russia

Brief review on the genus Mycetochara Guérin-Méneville, 1827 (Tenebrionidae: Alleculinae: Mycetocharina) from the European Russia and the Russian Caucasus is presented. In total, 14 species occur on this territory. Two new species are described: M. (Ernocharis) ruthenica Nabozhenko, sp. nov. from Rostov Region of Russia and M. (Oculochara) adygea Nabozhenko, sp. nov. from Republic of Adygea (Russia).The following synonymy is established in the genera Mycetochara and Gonodera Mulsant, 1856: Mycetochara (Ernocharis) zolotareffi Reitter, 1896 = Mycetochara (Ernocharis) gracilicornis Roubal, 1935, syn. nov.; Mycetochara (Ernocharis) ruficollis Baudi di Selve, 1877 = Mycetochara (s. str.) abdurakhmanovi Nabozhenko, 2018, syn. nov.; Gonodera corynthia Fairmaire, 1884 = Gonodera kasatkini Nabozhenko, 2018, syn. nov.

One Transcaucasian species is resurrected from the synonymy of the European Mycetochara (Ernocharis) maura (Fabricius, 1792): Mycetochara (Ernocharis) hirsuta Pic, 1925, sp. resurr. Mycetochara (Ernocharis) recondita Novák, 2022 is recorded for Armenia for the first time. Distribution of all species are corrected and clarified.

Keys to species (separately for males and females) of Mycetochara from European Russia and the Russian Caucasus is given.