Monomia rubromarginatus ( Lanchester, 1900 )

Monomia rubromarginatus ( Lanchester, 1900) View in CoL

Neptunus (Amphitrite) rubro-marginatus — Shen 1937b: 104, text-fig. 3.

Taxonomy: Shen (1937b: as Neptunus View in CoL ( Amphitrite View in CoL )), Stephenson and Campbell (1959: as Portunus View in CoL ).

Type: Holotype ñ NHM 1900.10.22.156 (NHM Data Portal).

Type locality: Singapore.

Distribution: West Pacific: the Philippines, Malay Archipelago and Singapore, Australia and New Caledonia ( Davie 2002; Richer de Forges and Ng 2006).

Habitat: Subtidal; substrates sandy, to depths of 38 m ( Davie 2002).

Remarks: In a treatment of Singapore swimming crabs, Shen (1937b) listed “South China Sea; Hong Kong; Malay Archipelago” as distribution of N. (A.) rubromarginatus (p. 104), yet this record was not cited in his later checklist of Hong Kong brachyuran fauna in 1940(a). Subsequent authors (e.g., Stephenson and Campbell 1959; Stephenson 1967 1972a) had cited Shen’s (1937b) report, including Hong Kong, or northern portion of South China Sea, within the distribution range of this Australian species. Extensive studies of brachyuran fauna in this region for the decades, however, have revealed no records of this species ( Dai and Yang 1991; Yang et al. 2012). It is here retained in the Hong Kong fauna with doubt.

Portunus pelagicus ( Linnaeus, 1758) View in CoL #

Lupa pelagica View in CoL — Stimpson 1858a: 38; Stimpson 1907: 76.

Neptunus pelagicus View in CoL — Heller 1865: 27 [part: material from East and Southeast Asia only]; Alcock 1899: 34 [part: material from Japan and Hong Kong only].

Portunus pelagicus View in CoL — Gee 1926: 161 [list]; Hill et al. 1975: 82; Morton 1979a: fig. 6.16a; Morton and Morton 1983: 94, fig. 7.4(10); Thompson and Shin 1983: tab. 4; RSS Wu and Shin 1998: 108; SY Lee and Leung 1999: 78; B Chan and Leung 2002: 24, fig. 2C; Leung et al. 2004: 95, 2 unnumb. figs.; Tsang et al. 2020: 70, 2 unnumb. figs.; Wong et al. 2021: 40, fig. 69, pl. 13E.

Portunus (Portunus) pelagicus View in CoL — Shen 1934: 37, text-fig. 1.

Neptunus (Neptunus) pelagicus View in CoL — Shen 1940a: 220.

Taxonomy: Sakai (1939: as Neptunus View in CoL ( Neptunus View in CoL )), Holthuis (2004), JCY Lai et al. (2010).

Type: Neotype ò ZRC 2007.0235 View Materials (designated by JCY Lai et al. 2010).

Type locality: Pulau Tekong, Singapore (neotype).

Distribution: West Pacific: northern Australia, Indonesia, the Philippines, Vietnam, South China, Taiwan and Japan; hybrid populations in Bay of Bengal and Andaman Sea (with P. reticulatus (Herbst, 1784)) , and northern Australia (with P. armatus (A. Milne-Edwards, 1861) (JCY Lai et al. 2010) .

Habitat: Intertidal, beneath seagrass or rocks, on muddy substrate or in shallow pools; or subtidal, substrates sandy, muddy, or of soft mud in estuaries; depths 5 to 47 m ( Yang et al. 2012).

Portunus sanguinolentus (Herbst, 1783) #

Lupa sanguinolenta — Stimpson 1858a: 38; Stimpson 1907: 76. Neptunus (Neptunus) sanguinolentus View in CoL — Balss 1922b: 106; Gordon

1931: 527; Shen 1940a: 220.

Portunus sanguinolentus View in CoL — Gee 1926: 161 [list]; Stephenson and Rees 1967: 45, fig. 12a, b; Morton 1979a: fig. 6.15; Morton 1979b: 136, tab. 7.1; Thompson and Horikoshi 1982: tab. 1; RSS Wu 1982: tab. 1; Morton and Morton 1983: 94, fig. 7.4(9); Thompson and Shin 1983: tab. 4; Morton 1988: 24, pl. 4; Davie 1992b: tab. 1; RSS Wu and Shin 1998: 108; SY Lee and Leung 1999: 78; Blackmore and Rainbow 2000: app. 1; B Chan and Leung 2002: 24, fig. 2B; Leung et al. 2004: 97, 1 unnumb. fig.; Lui et al. 2007: 637; Wong et al. 2021: 40, fig. 70, pl. 13f.

Portunus (Portunus) sanguinolentus View in CoL — Shen 1932a: 34, text-figs. 2, 3, pl. 7a.

Taxonomy: Sakai (1939: as Neptunus View in CoL ( Neptunus View in CoL )), Stephenson and Campbell (1959), Apel and Spiridonov (1998), Yang et al. (2012).

Type: Holotype ò ZMB 2099 ( Apel and Spiridonov 1998; K Sakai 1999).

Type locality: Tharangambadi (= Tranquebar), India ( Apel and Spiridonov 1998).

Distribution: Western Indian Ocean to Central Pacific: from South Africa, Madagascar, Red Sea, Gulf of Oman, through Southeast and East Asia to Australia, New Zealand and French Polynesia ( Apel and Spiridonov 1998; Yang et al. 2012).

Habitat: Intertidal to subtidal; substrates sandy, muddy or of soft mud; depths to 80 m or deeper ( Yang et al. 2012).

Portunus trituberculatus (Miers, 1876) #

Portunus (Portunus) trituberculatus View in CoL — Shen 1932a: 32, text-fig. 1, pl.

6. Neptunus (Neptunus) trituberculatus View in CoL — Shen 1940a: 220. Portunus trituberculatus View in CoL — Hill et al. 1975: 82; Hill et al. 1978: 114;

Morton 1979b: 136, tab. 7.1; Davie 1992b: tab. 1; Leung et al.

2004: 99, 1 unnumb. fig.; Wong et al. 2021: 40, fig. 71, pl. 14A. Portunus trituberculata — Morton and Morton 1983: 94, fig. 7.4(8).

Taxonomy: Sakai (1939: as Neptunus ( Neptunus )), Stephenson and Rees (1967), Yang et al. (2012).

Type: Holotype probably in NHM; paratype RMNH D 44303 About RMNH ( Fransen et al. 1997).

Type locality: “Coasts of China or Japan ”.

Distribution: Eastern Indian Ocean to South China Sea and East Asia: Phuket ( Thailand), Peninsular Malaysia, coasts of China, Taiwan and Japan ( Stephenson 1972a; Ng and Davie 2002; Yang et al. 2012).

Habitat: Subtidal; substrates of muddy sand, shell fragments or soft mud; depths 8 to 100 m ( Yang et al. 2012).