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The genus Bryaxis Kugelann (Goniaceritae: Bythinini) is the most species-rich genus of the subfamily Pselaphinae and is mainly distributed in the Palearctic region. Although previous studies have documented 14 species in the Korean Peninsula, the true diversity, ecology, and immature stages of the genus are still inadequately known. In this study, five new Korean species are described: B. grandinodus sp. nov., B. uljinensis sp. nov., B. fabaiformis sp. nov., B. girinensis sp. nov., and B. nemorosus sp. nov. Illustrations of the habitus and other morphological details, and a distribution map are provided. In addition, Bryaxis leechanyoungi Nomura & Lee, 1993 is proposed as a new synonym of B. mahunkai Löbl, 1975 based on the original description and illustrations of diagnostic characters.

The genus Batriscenellus Jeannel, 1958 (type species: Batrisus fragilis Sharp) includes 35 species and is known from South Korea, China, Japan, Russia, and India. Three species, B. vicarius, B. auritus, and B. orientalis have been documented from the Korean Peninsula. One additional species, Batriscenellus koreanus sp. nov., is described as new. Redescriptions of the Korean species, a species key, illustration of habitus, and diagnostic characters are provided. [ABSTRACT FROM AUTHOR]

The Australian genus Logasa Chandler, 2001 (type species: L. novaeanglia Chandler) is comprised of six species, three of which are described as new: Logasa newtoni sp. nov., Logasa thayerae sp. nov., and Logasa comforti sp. nov. Examination of the types of L. tricolor (Oke) and L. ventralis (Oke) revealed that they do not share some of the diagnostic characters used here to characterize the type, and other species of the genus, but they are retained in Logasa until the group is revised. A key to species, illustrations of their habitus, and diagnostic characters are provided. [ABSTRACT FROM AUTHOR]

A new genus and three new species of pselaphine staphylinid beetles, supertribe Faronitae, from Western Australia are described as follows: Porongurup gen. nov. is based on Porongurup angulatus sp. nov., with the two additional new species, Porongurup clarkei sp. nov. and Porongurup tenuis sp. nov. Illustrations of their habitus, and major diagnostic characters as well as a distribution map are included. A key to the species is provided. [ABSTRACT FROM AUTHOR]

A new endemic genus and seven new species of New Zealand pselaphine staphylinid beetles of the super-tribe Faronitae are described as follows: Pseudoexeirarthra Park & Carlton, gen. n. (type species: Sagola spinifer Broun); P. sungmini Park & Carlton, sp. n.; P. kwangguki Park & Carlton, sp. n.; P. youngboki Park & Carlton, sp. n.; P. seiwoongi Park & Carlton, sp. n.; P. parkeri Park & Carlton, sp. n.; P. hlavaci Park & Carlton, sp. n.; P. nomurai Park & Carlton, sp. n. Three species, S. spinifer Broun, S. colorata Broun, and S. puncticollis Broun, are transferred to the genus Pseudoexeirarthra. Six species are synonymized: S. dilucida Broun, S. guinnessi Broun, S. longicollis Broun, S. longula Broun, and S. rectipennis Broun under P. spinifer (Broun); S. insueta Broun under S. colorata (Broun). A lectotype is designated for P. spinifer (Broun). A key, habitus photographs, line drawings of diagnostic characters, and distribution maps are provided for each species. [ABSTRACT FROM AUTHOR]

A taxonomic review of Aleochara Gravenhorst subgenus Xenochara Mulsant & Rey in Korea is presented. Five species are recognized, with one species, A. (Baryodma) intricata Mannerheim, newly transferred to the subgenus Xenochara. Aleochara (X.) asiatica Kraatz and A. (X.) peninsulae Bernhauer are reported for the first time in the Korean peninsula. A key, line drawings of diagnostic characters, and redescriptions of Korean Xenochara species are provided. [ABSTRACT FROM AUTHOR]