Hemigrapsus takanoi Asakura & Watanabe, 2005

Hemigrapsus takanoi Asakura & Watanabe, 2005 View in CoL # ( Fig. 40E, F View Fig , inset)

Hemigrapsus takanoi View in CoL — present record.

Taxonomy: Asakura and Watanabe (2005), Mingkid et al. (2006), S Lee et al. (2013), Ng et al. (2017a).

Type: Holotype ò CBM-ZC 8039, and paratypes in CBM.

Type locality: Estuary of Okamoto-gawa, Tomiura, Chiba, Japan.

Distribution: East Asia: South China (so far from Hong Kong), Korea, Japan, and Pacific shore of Russia ( Asakura and Watanabe 2005; S Lee et al. 2013; Marin 2013); invasive species in the northeastern Atlantic ( Dauvin et al. 2009; Markert et al. 2014; Wood et al. 2015).

Habitat: Intertidal; substrates muddy to of coarse sand, often under larger rock fragments.

Remarks: See Remarks under H. penicillatus above. This species is a new record for the fauna of Hong Kong.

Hemigrapsus sanguineus (De Haan, 1835) #

Heterograpsus sanguineus View in CoL — Stimpson 1858b: 104; Stimpson 1907: 126.

Brachynotus sanguineus — Koelbel 1897: 712, pl. 1(7); Gordon 1931: 528.

Hemigrapsus sanguineus View in CoL — Gee 1926: 164 [list]; Shen 1940a: 237; Hill et al. 1975: 54, 59; Hill et al. 1978: 76, 84; Morton 1979a: 112, figs. 6.12, 6.15; Morton 1979b: 136, tab. 7.1; Hill and Phillipps 1981: 148, pl. 50e; Morton and Morton 1983: 93, fig. 7.3(3); Morton and Harper 1995: 43, fig. 6(12); Williams 2003: 94, 2 unnumb. figs.; VCS Lai et al. 2006: 58, 3 unnumb. figs.

Taxonomy: Shen (1932b), Sakai (1939).

Type: Lectotype ò in RMNH D 42132, and paralectotypes in RMNH (designated by Yamaguchi and Baba 1993; see also Fransen et al. 1997).

Type locality: Japan, locality unspecified.

Distribution: East Asia: coasts of China, Korea, Taiwan and Japan; invasive species along shores of European ( Breton et al. 2002; Dauvin and Dufossé 2011) and Atlantic North America ( McDermott 1998; Blakeslee et al. 2017).

Habitat: Intertidal; under larger rock fragments in semi-sheltered rocky shores.

Neoeriocheir leptognathus (Rathbun, 1913) #

Neoeriocheir leptognathus View in CoL — Wong et al. 2021: 65, fig. 101, pl. 19C.

Taxonomy: Sakai (1983b), NK Ng et al. (1999).

Type: Holotype ñ USNM 45567 About USNM ( NK Ng et al. 1999).

Type locality: Shanghai, China.

Distribution: East Asia: coasts of China to Korea: from Hainan to Yellow Sea ( NK Ng et al. 1999).

Habitat: Intertidal and shallow subtidal; on estuarine muddy substrates.