Review of the intertidal rove beetle tribe Liparocephalini Fenyes (Coleoptera, Staphylinidae, Aleocharinae) from Japan Author Tasaku, Yuto Department of Biology, School of Biological Sciences, Tokai University, Hokkaido, 005 - 8601, Japan. & Corresponding author Author Ono, Hiroki Sounan, Minami-ku, Sagamihara-shi, Kanagawa, 252 - 0312, Japan. Author Maruyama, Munetoshi The Kyushu University Museum, Hakozaki 6 - 10 - 1, Higashi-ku, Fukuoka, 812 - 8581, Japan. text Zootaxa 2023 2023-12-12 5383 3 251 296 https://www.mapress.com/zt/article/download/zootaxa.5383.3.1/52454 journal article 281948 10.11646/zootaxa.5383.3.1 aed01355-98a2-4990-b87f-247b2665b8e2 1175-5326 10361564 20988E42-C14D-4878-A716-8CEAB5E5EF92 Genus Halorhadinus Sawada, 1971 [Japanese name: Iso-hanekakushi-zoku] ( Fig. 20 ) Halorhadinus Sawada, 1971: 92 (original description; type species: H . aequalis Sawada, 1971 ); Ahn, 2001: 123 (redescription; key to species; phylogenetic analysis); Maruyama & Hayashi, 2009: 72 (supplementary description; key to species; systematic position); Ono & Maruyama, 2014: 42 (description; key to species). Diagnosis. This genus is similar to Amblopusa in overall bodyform ( Figs. 17 & 20A ), characteristics of mentum and maxilla ( Figs. 19B & D ; 20C & E ) and apical lobe of paramere ( Figs. 18G & 20G ) but can be distinguished by the following characteristics: hind wings sometimes present, female spermatheca coiled many times, mandible elongate ( Fig. 20F ), labrum as long as wide ( Fig. 20B ), and two medial setae present on prementum ( Fig. 20D ). Comparisons with other genera of Liparocephalini , see the key to genera and diagnosis of Amblopusa . Habitat. All species of this genus mainly have been collected from gravel beaches and rarely from under driftwood on sandy beaches. Remarks. Eight species of this genus are recorded from Japan . They were relatively recently redescribed or described, and their diagnostic characters are well illustrated ( Maruyama & Hayashi, 2009 ; Ono & Maruyama, 2014 ). Therefore, only the diagnosis of the genus is mentioned here. See, Maruyama & Hayashi (2009) and Ono & Maruyama (2014) for species identification. Our illustrations are based on the type species H. aequalis . Distribution. Japan : Hokkaidô , Honshû, Shikoku, Kyûshû; Korea .