Neanthes Kinberg, 1865

Fazne Ibrahim, Nur, Shuaib Ibrahim, Yusof & Sato, Masanori, 2019, New record of an estuarine polychaete, Neanthesglandicincta (Annelida, Nereididae) on the eastern coast of Peninsular Malaysia, ZooKeys 831, pp. 81-94 : 83-84

Genus Neanthes Kinberg, 1865

Neanthes Kinberg, 1865: 171-172; Imajima 1972: 102; Fauchald 1977: 89; Wu et al. 1985: 143; Khlebovich 1996: 102; Bakken 2002: 328; Bakken and Wilson 2005: 527; Glasby et al. 2011: 363; Sato 2013: 35; Bakken et al. 2018: 29.

Type species.

Neanthes vaalii Kinberg, 1865.

Diagnosis.

Prostomium with entire anterior margin, one pair of antennae, one pair of palps. Eyes present or absent. Eversible proboscis usually with conical paragnaths on both maxillary and oral rings; paragnaths on oral ring occasionally degenerating to minute ones or completely lost; paragnaths occasionally emerging from plate-like basement; smooth bar-like paragnaths present or absent on group IV of maxillary ring. Four pairs of tentacular cirri. Parapodia biramous, except first two pairs; notoaciculae present or absent on chaetigers 1 and 2. Dorsal cirrus lacking basal cirrophore. Notochaetae homogomph spinigers. Upper neurochaetae including homo gomph spinigers and heterogomph falcigers; heterogomph spinigers present or absent. Lower neurochaetae including heterogomph falcigers; homogomph and heterogomph spinigers present or absent. Neuropodial heterogomph falcigers occasionally with varying degrees of fusion of chaetal shaft and blade in posterior body.

Remarks.

Neanthes is a large genus, considered to be polyphyletic ( Bakken and Wilson 2005; Glasby et al. 2011). The generic diagnosis is modified here from Sato (2013) to allow for the occasional absence of paragnaths on the oral ring of the proboscis of the Neanthes glandicincta species complex (see below).