Marphysa Quatrefages, 1866

Che Engku Abdullah, Che Engku Siti Mariam, Idris, Izwandy, Fahmi, Afiq Durrani Mohd, Flaxman, Beth & Hutchings, Pat, 2024, Four new species of Marphysa (Annelida, Eunicida, Eunicidae) from the east coast of Peninsular Malaysia, ZooKeys 1204, pp. 65-103 : 65-103

Genus Marphysa Quatrefages, 1866

Type species.

Nereis sanguinea Montagu, 1813 .

Diagnosis

(after Molina-Acevedo and Carrera-Parra 2017). Prostomium slightly or completely bilobed; five prostomial appendages without articulations; eyes present or absent. Peristomium without peristomial cirri. Maxillary apparatus with four pairs of maxillae, an unpaired on the left side; MI with falcal arch developed, extended, with the outer edge of the base arched; MIII curved, forming part of distal arc, with attachment lamella of rectangular or irregular shape, situated at centre of posterior edge of maxilla; MIV with circular or rectangular attachment lamella. Branchiae distributed along entire body. Dorsal cirri without articulation; postchaetal lobe well developed in anterior region. Ventral cirri with swollen, oval, or circular base. All sub-aciculae dark. Supracicular chaetae include limbate, pectinate isodont chaetae with slender teeth, pectinate anodont chaetae with long teeth. Subacicular chaetae include compound falcigers or spinigers, or only limbate chaetae. Subacicular hook dark or translucent, bidentate or unidentate. Pygidium with two pairs of anal cirri, without articulation.