Hexapodoidea Miers, 1886

Superfamily Hexapodoidea Miers, 1886 Family Hexapodidae Miers, 1886

Hexalaughlia orientalis ( Rathbun, 1909) View in CoL #

Hexalaughlia orientalis View in CoL — Ng and Wong 2019: fig. 1; Wong et al. 2021: 14, fig. 22, pl. 4E.

Taxonomy: Rathbun (1910), Guinot (2006).

Type: Probably in now NHMD (original text), yet “not possible to examine” as noted by Guinot (2006).

Type locality: North of Koh Kut, eastern Gulf of Thailand.

Distribution: South China Sea and East Asia: Gulf of Thailand, South China, Taiwan, and possibly also to Japan ( Guinot 2006; Manning and Holthuis 1981).

Habitat: Subtidal; substrates muddy, commensal in tubes of annelids ( Dai and Yang 1991).

Hexapinus simplex Rahayu & Ng, 2014 View in CoL #

Hexapinus simplex View in CoL — Ng and Wong 2019: 236, fig. 2; Wong et al. 2021: 14, fig. 23, pl. 4F.

Taxonomy: Rahayu and Ng (2014), Naruse et al. (2017).

Type: Holotype ò MZB-Cru 3790; paratypes in MZB, USNM and ZRC.

Type locality: Ekas, Lombok, Indonesia.

Distribution: South China Sea and East Asia: Indonesia, Singapore, to South China and Taiwan Strait, and Ryukyus ( Japan) ( Rahayu and Ng 2014).

Habitat: Intertidal and subtidal; from muddy or sandy substrates, or intertidal seagrass beds; has also been reported from tubes of chaetopterid worms ( Rahayu and Ng 2014).

Mariaplax chenae Rahayu & Ng, 2014 View in CoL #

? Hexapus anfractus View in CoL — Morton 1988: 36, pl. 7 [not Lambdophallus anfractus Rathbun, 1909 View in CoL ].

? Hexapus granuliferus View in CoL — Ong Che and Morton 1991: tab. 1 [not H. granuliferus Campbell & Stephenson, 1970 View in CoL ].

Mariaplax chenae View in CoL — Ng and Wong 2019: 237, figs. 3–5; Wong et al. 2021: 15, fig. 24, pl. 5A.

Taxonomy: Rahayu and Ng (2014), Naruse et al. (2017), Ng and Wong (2019).

Type: Holotype ò in IOCAS; paratypes in IOCAS and ZRC.

Type locality: Coastal waters of Zhejiang, China.

Distribution: East Asia: coasts of China to Shandong, and Japan ( Rahayu and Ng 2014).

Habitat: Subtidal; from depths of 4 to 39 m ( Rahayu and Ng 2014).

Mariaplax exigua Ng & Wong, 2019 View in CoL #

Mariaplax exigua Ng & Wong, 2019: 239 View in CoL , figs. 6, 7; Wong et al. 2021: 16, fig. 25, pl. 5B.

Taxonomy: Ng and Wong (2019).

Type: Holotype ò ZRC 2018.0706 View Materials .

Type locality: Tolo Channel, Hong Kong. Distribution: So far from Hong Kong only.

Habitat: Subtidal; shallow waters.