A new species of woodlice, Protracheoniscuspokarzhevskii Gongalsky & Turbanov, sp. n. is described from Kalmykia, NE Pre-Caspian region, Russia. Protracheoniscuskryszanovskii Borutzky, 1957 from the same area is also redescribed. Diagnostic features of these species as well as affinities within the genus are provided and discussed.
Keywords: Desertoniscus; Isopoda; Oniscidea; Protracheoniscus; COI; Hungary; Kalmykia; new species; phylogenetic analysis; woodlouse.