Sabellaria and Lygdamis (Polychaeta: Sabellariidae) from reefs off northeastern Brazil including a new species of Sabellaria Author Santos, André Souza Dos Author Brasil, Ana Claudia Dos Santos Author Christoffersen, Martin Lindsey text Zootaxa 2014 3881 2 125 144 journal article 42292 10.11646/zootaxa.3881.2.2 524c89dd-2f87-486f-aa92-01b00d110b58 1175-5326 252092 CE5F4D90-4AC0-44F1-8C29-0BC5E92043C8 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).