Peltodytes sinensis (Hope, 1845)

Figs 3, 18B Japanese name: Shina-kogashira-mizumushi

Haliplus sinensis Hope, 1845: 15.

Peltodytes sinensis: Kamiya 1936: 40; Satô 1985: 181; Nakane 1987: 27; Vondel 1995: 124; 2003a: 33; Aoyagi 2011a: 99; 2011b: 107; Matsuo and Fukagawa 2016: 51; Mitamura et al. 2017: 137; Aoyagi 2019: 34; Nakajima et al. 2020: 18; Aoyagi 2020: 87; Uchida et al. 2021: 183.

Material examined.

6 exs., Kagoshima Prefecture: Ohtsukan, Okinoerabu-jima, 3.VIII.1958, S. Ueno & Y. Morimoto leg. (EUMJ); 1 ex., Kagoshima Prefecture: Uchida, near, Taniyama, Okinoerabu-jima, 4.VIII.1958, S. Ueno & Y. Morimoto leg. (EUMJ). Other specimens are listed in Suppl. material 1.

Measurements

(n = 10). TL 3.06-5.21 (4.76) mm; HW 0.75-0.82 (0.78) mm; CED 0.20-0.25 (0.22) mm; PL 0.63-0.80 (0.71) mm; PW 1.46-1.68 (1.58) mm; EL 2.43-2.76 (2.58) mm; EW 1.91-2.30 (2.12) mm; BT 1.46-1.76 (1.62) mm; HW/CED 3.26-3.73 (3.49); PW/PL 2.01-2.40 (2.21); EL/EW 1.17-1.28 (1.21).

Biology.

This species usually lives in still, shallow waters such as ponds and paddies, and the adults were collected by sweep netting in shallow water and using light traps (Nakajima et al. 2020).

Immature stages.

Unknown.

Distribution.

Japan: Tsushima, Nansei shoto (Nakano-shima and Takara-jima of Tokara-retto, Amami-Ôshima, Kakeroma-jima, Tokuno-shima, Okinoerabu-jima (new record), Yoron-jima, Okinawa-jima, Yagaji-shima in Okinawa, Miyagi-jima in Okinawa, Iheya-jima, Kume-jima, Miyako-jima, Ikema-jima in Okinawa, Irabu-jima in Okinawa, Ishigaki-jima, Iriomote-jima, Yonaguni-jima); Korea, China, Taiwan, SE Asia.