Portunidae Rafinesque, 1815

Wong, Kingsley J. H., Ng, Peter K. L., Shih, Hsi-Te & Chan, Benny K. K., 2024, Positive association between PTN polymorphisms and schizophrenia in Northeast Chinese Han population., Zoological Studies 63 (38), pp. 141-149 : 61-62

Family Portunidae Rafinesque, 1815 Subfamily Lupocyclinae Paulson, 1875

Alionectes pulchricristatus ( Gordon, 1931) #

Neptunus (Hellenus) alcocki Gordon, 1930: 521 [pre-occupied name Neptunus (Hellenus) alcocki Nobili, 1905 ].

Neptunus (Hellenus) pulchricristatus Gordon, 1931: 527 , 534, text-figs. 8, 10B.

Neptunus (Hellenus) gracillimus — Shen 1940a: 220.

Portunus pulchricristatus — Stephenson and Rees 1967: 37, fig. 7.

Portunus pulchicristatus — Apel and Spiridonov 1998: 303, figs. 112, 116.

Xiphonectes pulchricristatus — Wong et al. 2021: 43, fig. 76, pl. 14F.

Alionectes pulchricristatus — Koch et al. 2022: 16, fig. 6.

Taxonomy: Ghani and Tirmizi (1993: as Portunus ), Apel and Spiridonov (1998: as Portunus ), Yang et al. (2012: as Portunus ); Koch et al. (2022). Type: Syntypes in NHM 1930.12.2.82-85 ( Apel and Spiridonov 1998; Koch et al. 2022). Type locality: Hong Kong. Distribution: Arabian Sea to West Pacific: from Gulf of Oman, Pakistan, India, the Andamans, to

Phuket ( Thailand), South China, the Philippines, and Queensland, Australia ( Apel and Spiridonov 1998).

Habitat: Subtidal; substrates of soft mud, muddy sand or sandy mud; depths 16 to 830 m ( Yang et al. 2012).

Remarks: Among species previously assigned to Xiphonectes , X. pulchricristatus is abberant in having relatively large, dorsally entire orbit, maxilliped 3 merus not produced anterolaterally, P5 merus posteriorly armed, and G1 distal slender portion of about 1/3 of total length (see e.g., Wong et al. 2021). The genetic evidence presented by Koch et al. (2022) shows its affiliation with Lupocycloporus rather than lineages under the Portuninae . A new genus to accommodate X. pulchricristatus , Alionectes , was therefore established, and this was placed in the Lupocyclinae ( Koch et al. 2022) .

Lupocycloporus gracilimanus (Stimpson, 1858) #

Amphitrite gracilimanus — Stimpson 1858a: 38; Stimpson 1907: 77, pl. 10(3) [“off the Chinese coast near Hong Kong ”].

Portunus (Lupocycloporus) gracilimanus — Gee 1926: 161 [list].

Neptunus (Lupocycloporus) gracilimanus — Gordon 1931: 527; Shen 1940a: 221.

Portunus gracilimanus — Davie 1992b: tab. 1; B Chan and Leung 2002: 24, fig. 2A.

Lupocycloporus gracilimanus — Wong et al. 2021: 39, fig. 65, pl. 13A.

Taxonomy: Shen (1937 b: as Neptunus ( Lupocycloporus )), Stephenson and Campbell (1959: as Portunus ), Yang et al. (2012: as Portunus ).

Type: Presumably lost.

Type locality: Chinese shores along latitude 23°N.

Distribution: Eastern Indian Ocean to West Pacific: from East India, Southeast and East Asia to Taiwan, to Papua New Guinea and Australia ( Takeda and Miyake 1969a).

Habitat: Subtidal; substrates muddy sand, soft mud or sandy mud; depths 6 to 140 m ( Yang et al. 2012).