Lygdamis Kirtley, 1994 : 116

Santos, André Souza Dos, Brasil, Ana Claudia Dos Santos & Christoffersen, Martin Lindsey, 2014, Sabellaria and Lygdamis (Polychaeta: Sabellariidae) from reefs off northeastern Brazil including a new species of Sabellaria, Zootaxa 3881 (2), pp. 125-144 : 128

Lygdamis Kirtley, 1994: 116 .

Type species. Lygdamis indicus Kinberg, 1867 , by monotypy.

Type locality. Bangka Straits, Java, Indonesia.

Diagnosis. Operculum with separated lobes, distal end sloped posteriorly, opercular paleae straight, smooth, outer ones flat and inner ones cylindrical, spine-like (Capa et al. 2012).

Description. Operculum longer than wide, lobes completely separated, distal end sloped posteriorly (oblique to longitudinal axis). Numerous opercular papillae around edge of lobes. Outer paleae in semicircles, straight, with flat blades, lateral and distal margins smooth. Inner opercular chaetae in one row along inner margin, opercular lobes with straight and cylindrical or slightly flattened blades. One pair of nuchal spines with bent tips (hooks) and without limbations. Palps similar in size to operculum. Median organ elongate at the dorsal junction of lobes of opercular stalk. Tentacular filaments compound (branching); buccal flaps absent. Neuropodia of segment 1 with conical cirrus, with or without capillary chaetae. Segment 2 with three triangular-shaped lobes between noto- and neuropodia, in some species rounded and small. Four parathoracic segments with notochaetae consisting of lanceolate and capillary chaetae and neurochaetae similar in shape but smaller. Branchiae from segment 2 to midabdominal segments ( Kirtley 1994; Hutchings et al. 2012).