Sabellaria wilsoni Lana & Gruet, 1989

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 : 132-134

Sabellaria wilsoni Lana & Gruet, 1989

Figure 4 A–C

Saballaria wilsoni Lana & Gruet 1989: 239 , figures 1–21; Kirtley 1994: 80, figure4.33; Lana & Bremec 1994: 216, figures 1–2; Santos et al. 2011: 9, fig. 6 (a–c); Lomonaco et al. 2011: fig. 1.

Material examined. Total: Four specimens. State of Rio Grande do Norte, Guamaré city: Projects Caracterização Ambiental da Bacia Potiguar and Monitoramento Ambiental dos Emissários Submarinos do Pólo Industrial de Guamaré . St. BPO19DG (05º3.561’0’’ S036º28.57’ 0’’W) [ POLY 00302]: 1 complete spec. 27/05/2004, 4.3 m, 6 mm long. St. BPOT 20DG (05º0’0’’S 036º27’0’’W) [ POLY 00303]: 1 complete spec. 21/05/2004, 5 m, 7 mm long. Est. BPOT 24DG (05º20’0’’S 036º40’0’’W) [ POLY 00304]: 1 complete spec. 21/05/2004, 5 m, 8 mm long. St. E07DG (05º3’1,74’’ S 036º28.57’0’’W) [ POLY 00305]: 1 complete spec. 21/05/2004, 6.3 m, 8 mm long.

Additional material examined. Sabellaria wilsoni Lana & Gruet (1989). Type series: Holotype: Paraná State, Ponta Grossa, Paranaguá Bay, 25°25’06”S 48°28’00”W, collected on 24/05/ 1982. 10 m [ MCBM BPO 241]. Paratype: Ponta Grossa, Paranaguá Bay, 25°25’06”S 48°28’00”W, 15 specs, 24/05/ 1982. 10 m [ MCBM BPO 242]. Paratype: Ponta do Maciel, Paranaguá Bay, 25°33’S 48°25’W, 16.5 m, 1 spec. 28/05/1982 [ MCBM BPO 243]. Paratype: Ponta do Maciel, Paranaguá Bay: 25°33’S 48°25’W. 1 spec. 05/06/1986, 16.5 m [ MCBM BPO 244]. Paratype: Ponta da Pita, Antonina Bay , 25°26’30” 48°31’W, 1 spec., 03/07/1986, 6 m [ MCBM BPO 245]. Paraíba State: Total: 2 specs, 03/2009. 7 St. B10 (7°01´02´´S 34º47´55´´W) [CIPY-POLY 1027]. 7°01´02´´S 34º47´55´´W (Station B10), 1 spec. [CIPY-POLY 1028].

Diagnosis: Outer paleae with flat, oblong, thecate blades; teeth and medial plume on distal margin of blades penicillate; 3–4 distal teeth on each side of dominant tooth, progressively smaller toward outer margins ( Figure 4 A). Middle paleae organized in 9–12 pairs on each side; strongly geniculate, with elongated blades distally blunted, curved toward inner series of opercular crown ( Figure 4 B). Inner series of paleae alveolate, strongly geniculate on proximal upper surface of blades, with thecal bands weakly excavate, slanting upward from horizontal plane; blade thicker and wider toward base, ending in bluntly rounded point; distal dentition on margin or, in some specimens, a series of sharp hooked tips ( Figure 4 C).

Remarks. The material examined here ( Figures 4 A–C) agrees with the descriptions of Lana & Gruet (1989) and Santos et al. (2011). Sabellaria wilsoni is known from mixohaline and polyhaline enviroments (estuaries and shallow habitats on the continental shelf), living in sandy or muddy sediments (sometimes with shells). The specimens were found at 15 m, similar to the type series collected at 10 and 16, 5 m. Recently, Santos et al. (2011) found S. wilsoni living near other sabellariid species, as in our new material.

Sabellaria wilsoni was originally described from the coast of Paraná. The species has been reported only from the Atlantic Ocean, from French Guyana to Argentina, and possibly from the Gulf of Mexico (Lana & Gruet 1989; Bremec & Lana 1994; Santos et al. 2011; Lomonaco et al. 2011).

Figures

FIGURE 4. Sabellaria wilsoni Lana & Gruet, 1989 (POLY 302): (A) outer palea; (B) middle palea; (C) inner palea. Scale bars: A – C, 0.1 mm.