Revision of the family Haliplidae (Insecta, Coleoptera) in Japan Author Hayashi, Masakazu https://orcid.org/0000-0003-3708-9005 Hoshizaki Green Foundation, Sono, Izumo, 691 - 0076, Japan hgf-haya@green-f.or.jp Author Iwata, Tomofumi https://orcid.org/0000-0002-7738-3199 Toyama Science Museum, 1 - 8 - 31 Nishinakano-machi, Toyama, 939 - 8084, Japan Author Yoshitomi, Hiroyuki https://orcid.org/0000-0001-8416-9249 Entomological Laboratory, Faculty of Agriculture, Ehime University, Tarumi 3 - 5 - 7, Matsuyama, 790 - 8566, Japan hymushi@agr.ehime-u.ac.jp text ZooKeys 2023 2023-07-03 1168 267 294 http://dx.doi.org/10.3897/zookeys.1168.99302 journal article http://dx.doi.org/10.3897/zookeys.1168.99302 1313-2970-1168-267 28659D393708403584BFA95AC91C59FF 01F93FFC6397552587D46E5748153639 Haliplus (Liaphlus) basinotatus Zimmermann, 1924 Figs 13 , 18F Japanese name: Kurohoshi-kogashira-mizumushi Haliplus basinotatus Zimmermann, 1924: 137. Nakane 1963a : 55; 1987 : 30; Vondel 1995: 119; Matsuo and Fukagawa 2016 : 52; Mitamura et al. 2017 : 139; Hayashi and Kadowaki 2019 : 25; Nakajima et al. 2020 : 22; Watanabe 2021 : 16. Haliplus (Liaphlus) basinotatus : Vondel 2003a: 31. Haliplus basinotatus latiusculus Nakane, 1985: 63. Syn. nov. Material examined. Specimens examined in this study are listed in Suppl. material 1. Measurements ( n = 10). TL 3.30-5.34 (4.88) mm; HW 0.78-0.88 (0.83) mm; CED 0.30-0.38 (0.35) mm; PL 0.71-0.75 (0.74) mm; PW 1.43-1.59 (1.52) mm; EL 2.54-2.86 (2.66) mm; EW 1.95-2.17 (2.06) mm; BT 1.60-1.74 (1.65) mm; HW/CED 2.27-2.62 (2.35); PW/PL 1.95-2.14 (2.05); EL/EW 1.24-1.32 (1.27). Figure 13. Haliplus basinotatus A habitus B head C prosternal process D penis E left paramere F right paramere. Scale bars: 1.0 mm ( A ); 0.5 mm ( B ); 0.25 mm ( C ); 0.1 mm ( D-F ). Biology. The larvae eat Characeae algae, and the adults were collected by sweep on shallow water ( Nakajima et al. 2020 ). Immature stages. A color illustration is given by Mitamura et al. (2017) . DNA barcodes. The COI (Cox1) gene sequence of a Japanese specimen are deposited in DDBJ ( Hayashi and Ooi 2022 ): Shimane Prefecture (LC633206). Discussion. Nakane (1985) described a subspecies for Japanese population, but we could not find any differences between the Asian ( van Vondel 1995 : fig. 53) and Japanese populations. In this paper we treat this subspecies as a junior synonym of nominotypical subspecies. Distribution. Japan: Hokkaido, Honshu, Shikoku, Kyushu, Oki, Tsushima; Korea, China, Far East Russia.