Ceratonereis australis Hartmann-Schröder, 1985

Glasby, Christopher J., 2015, Nereididae (Annelida: Phyllodocida) of Lizard Island, Great Barrier Reef, Australia, Zootaxa 4019 (1), pp. 207-239 : 209

Ceratonereis australis Hartmann-Schröder, 1985

( Fig. 1A )

Ceratonereis (Ceratonereis) singularis australis Hartmann-Schröder, 1985: 46 –47, figs 48–58. Ceratonereis singularis australis .— Pamungkas & Glasby 2015: 6 –8, fig. 3a, b.

Material examined. AM: W.44315-T, MI QLD 2384 (1); W.43825, MI QLD 2355 (1); W45317 , MI QLD 2426 (1). NTM: W22557 (1), Off Granite Bluff, 14°'S, 145°'E, coll. M. Blazewicz, 17 Apr 2008; W23939 (1), Mermaid Cove (buoy), 14°38.7612'S, 145°27.2159'E, coll. CReefs Lizard Team, 27 Aug 2010; W23950 (1), MacGillivray Reef, 14°38.8751'S, 145°29.196' E, coll. CReefs Lizard Team, 31 Aug 2010.

Comparative material examined. NTM: W23808 (9), Banda, Maluku Province, Indonesia.

Diagnosis. Ceratonereis species with two brown bands dorsally across chaetigers 2 and 3 ( Fig. 1A ); dorsal cirri increasing in relative length greatly over first 20 chaetigers or so, to become about 2 x width of body (without parapodia) by mid-body; neuropodial postchaetal lobe rounded in anterior parapodia.

Remarks. In accordance with the species concept used in this study, and following Wilson et al. (2003), Ceratonereis singularis australis is elevated to species level. The specimens examined agree well with Hartmann- Schröder’s (1985) description of this subspecies, especially in the characteristic pigmentation pattern, paragnath count and parapodial morphology. The specimens are similar to C. tentaculata . Both species belong to the C. mirabilis group as recognised by Perkins (1980)), which has very long tentacular and dorsal cirri and Area III with fewer paragnaths (7) than Area IV, and the dorsal notopodial ligule similar in size to the ventral neuropodial ligule in the anterior parapodia.

Habitat. Lagoon, fore-reef and reef slope, 15– 20 m.

Type locality. Exmouth, Western Australia.

Distribution. Australia and eastern Indonesia. First record for Lizard Island.

Figures

FIGURE 1. A. Ceratonereis australis AM W. 44315, alive, antero-dorsal view; B. C. perkinsi AM W. 44320, alive, dorsal view; C. C. tentaculata AM W. 44314, alive, dorsal view; D. C. tentaculata NTM W 22558, preserved, antero-dorsal view; E. C. tentaculata NTM W 22558, preserved, antero-ventral view; F. C. ‘ multistripe AM W. 47563 ’ AM W. 47563, alive, antero-dorsal view; G. Composetia marmorata NTM W 22530, alive, antero-dorsal view; H. C. marmorata NTM W 22530, preserved, anterodorsal view, pharynx everted. Photo: Alexander Semenov (A – C, F). Approximate body widths: A: 1.2 mm; B: 1.8 mm; C: 1.9 mm; D, E: 2.0 mm; F: 1.4 mm; G, H: 2.6 mm.