New species and new records of Eastern Palaearctic Stenichnus Thomson (Coleoptera, Staphylinidae, Scydmaeninae)

Two new scydmaenine species are described based on specimens collected in Taiwan: Stenichnus (s. str.) bifurcatus sp. n., and Stenichnus (s. str.) totoroides sp. n. New records are provided for Stenichnus totoro Jaloszynski (Japan: Iriomote-jima and Ishigaki-jima), S. bellulus Jaloszynski (Taiwan; Japan: Iriomote-jima, Ishigaki-jima, and for the first time recorded from Yonaguni-jima), S. taiwanicus Franz (Taiwan), S. bicolor (Denny) (Europe, Mongolia, Siberia, Russian Far East, and for the first time recorded from Japan: Iwate Prefecture), S. dividus Kurbatov (Russian Far East; for the first time recorded from Japan: Fukushima Prefecture), S. lackneri Jaloszynski (Japan: Tokunoshima, and for the first time recorded from Amami-Oshima and Okinawa-jima), S. pollens (Sharp) (Japan: Kyushu, and for the first time recorded from Honshu), S. minipollens Jaloszynski (Japan: Hokkaido, and for the first time recorded from Kyushu and Shikoku), and S. saltuarius Kurbatov (Russian Far East; for the first time recorded from China: Heilongjiang Province). Moreover, records of six undescribed Japanese species of Stenichnus known from females are given, to facilitate future study on the still poorly known diversity of this genus in Eastern Palaearctic. Stenichnus dividus and S. saltuarius are placed in the nominotypical subgenus.

Automated summary

Two new species of the scydmaenine genus Stenichnus, Stenichnus bifurcatus and Stenichnus totoroides, are described based on specimens collected in Taiwan. Additionally, new records and first-time records are provided for several known species, and descriptions of six undescribed Japanese species are given to facilitate future research on the diversity of this genus in the Eastern Palaearctic region.