Haliplus (Liaphlus) sharpi Wehncke, 1880

Figs 17, 19C Japanese name: Madara-kogashira-mizumushi

Haliplus sharpi Wehncke, 1880: 74. Satô 1985: 181; Nakane 1985: 63; 1987: 30; Vondel 1995: 123; Matsuo and Fukagawa 2016: 53; Mitamura et al. 2017: 140; Hayashi and Kadowaki 2019: 25; Nakajima et al. 2020: 24; Nakamine and Nakamine 2021: 2; Imasaka et al. 2021: 71; Watanabe and Ohba 2022: 34.

Haliplus (Liaphlus) sharpi: Satô 1984: 3; Vondel 1991: 129; 1993: 313; 2003a: 32.

Haliplus simplex: Kamiya 1936: 48. [misidentification]

Haliplus tsukushiensis Yoshimura, 1932: 102. Nakane 1963a: 55. [synonymized by Satô 1984]

Haliplus holmeni Vondel, 1991: 109. [synonymized by van Vondel 2017]

Material examined.

10 exs., Niigata Prefecture: Ohura, Aikawa-machi, Sadoga-shima, 27-30. V.1989, Y. Abe & T. Abe leg. (KPMNH).

Measurements

(n = 10). TL 3.22-4.81 (4.48) mm; HW 0.71-0.81 (0.75) mm; CED 0.28-0.35 (0.31) mm; PL 0.70-0.80 (0.75) mm; PW 1.35-1.51 (1.44) mm; EL 2.30-2.52 (2.39) mm; EW 1.75-1.95 (1.87) mm; BT 1.40-1.56 (1.49) mm; HW/CED 2.25-2.69 (2.41); PW/PL 1.86-2.04 (1.95); EL/EW 1.23-1.33 (1.27).

Biology.

This species typically inhabits stagnant water environments such as ponds, paddies, and swamp (Nakanishi 2012; Watanabe and Hidaka 2013). The larvae feed on Characeae algae (Nakanishi 2012). The pupation occurred in the pupal chamber in laboratory rearing experiments (Nakanishi 2012).

Immature stages.

The color photographs were provided by Nakanishi (2012) and Mitamura et al. (2017).

Distribution.

Japan: Hokkaido, Honshu, Shikoku, Kyushu, Sado (new record), Oki, Tsushima, Iki, Azuchi-ôshima in Nagasaki, Hirado-jima, Goto-retto, Koshikishima-retto, Nansei shoto (Tanegashima); Korea, China, Taiwan.