Revision of the genus Reichardtiolus Kryzhanovskij, 1959 (Coleoptera, Histeridae, Saprininae)
The genus Reichardtiolus Kryzhanovskij, 1959 is revised herein. It now contains five species: R. duriculus (Reitter, 1904) from middle Asia (with a doubtful female specimen from western China that is here tentatively assigned to this species), R. pavlovskii Kryzhanovskij, 1959 from Turkmenistan, R. sphingis (Peyerimhoff, 1936), comb. n. (transferred from Saprinus Erichson, 1834) from Egypt and Jordan, R. perses sp. n. from Iran and R. aldhaferi sp. n. from Saudi Arabia. Except for R. pavlovskii, which is a rather distinct species known only from two females, the remaining species are allopatric, very similar externally and are best separated from each other by their male terminalia. R. pavlovskii is kept in Reichardtiolus only tentatively, pending the examination of more specimens, and especially its male genitalia. R. duriculus and R. pavlovskii are re-described, while R. perses sp. n., R. aldhaferi sp. n. and R. sphingis comb. n. are provided with diagnostic descriptions because of their overall similarity with R. duriculus. Morphological differences of all species are illustrated using SEM micrographs. Male genitalia of R. duriculus, R. sphingis comb. n., R. perses sp. n. and R. aldhaferi sp. n. are illustrated and a key to the species is given. R. duriculus is newly recorded from Tajikistan.
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