Leonnates crosnieri León-González & Salazar-Vallejo, 2003

Glasby, Christopher J., 2015, Nereididae (Annelida: Phyllodocida) of Lizard Island, Great Barrier Reef, Australia, Zootaxa 4019 (1), pp. 207-239 : 214

Leonnates crosnieri León-González & Salazar-Vallejo, 2003

( Fig. 2 B)

Leonnates crosnieri León-González & Salazar-Vallejo, 2003: 366 –368, fig. 1a–g. Leonnates jousseaumi . —Hutchings & Reid 1991: 52–53. Non Gravier, 1899.

Material examined. NTM: W22504-T (1), SW of Palfrey Island, 14°41.65'S 145°27.93'E, 4 m, coll. M. Ekins, 13 Apr 2008; W22559 (1), Off Granite Bluff, 14°'S 145°'E, coll. M. Blazewicz, 17 Apr 2008; W22584-T (1). North Head Reef, 14°38.74'S 145°27.19'E, coll. C. Glasby, 14 Apr 2008; W22694 (1), Snake Pit, 14°40.2'S 145°34.04'E, coll. J. Caley & S. Smith, 25 Feb 2009; W22799-T (1), Washing Machine, 14°16.91'S 145°18.13'E, coll. M. Timmers, 26 Feb 2009, W23916 (1), Mrs Watson's Bay, 14°39.4332'S 145°27.042'E, coll. CReefs Lizard Team, 27 Aug 2010; W23984 (1), Mrs Watsons Bay, 14°39.453'S 145°26.6592'E, coll. CReefs Lizard Team, 14 Feb 2009; W23992 (1), Turtle Beach, 14°39.153'S 145°27.042'E, coll. CReefs Lizard Team, 7 Sep 2010; W24002 (1), North Direction Island, 14°45.0672'S 145°30.7559'E, coll. CReefs Lizard Team, 4 Sep 2010; W25883 (1), North Linnet Island, 14°46.743'S 145°21.036'E, coll. CReefs Lizard Team, 16 Feb 2009.

Diagnosis. Leonnates species with longitudinal stripes on mid-prostomium and transverse stripe on posterior edge of prostomium ( Fig. 2 B); notopodial prechaetal lobe present in parapodia of posterior body, and notopodial homogomph falcigers present; conical paragnaths and papillae on maxillary ring, papillae only on oral ring, arranged as follows (n = 3): Areas I: 0; II: 4–6 paragnaths in cluster; III: 5 papillae in a transverse line; IV: 4–8 paragnaths in cluster; V: 0; VI: 5–10 papillae in cluster; VII–VIII: 34–36 papillae in 2 or 3 rows mid-ventrally.

Remarks. This species was reported from Lizard Island as Leonnates jousseaumi by Hutchings & Reid (1991). The present specimens fit well the description of León-González & Salazar-Vallejo (2003), apart from the slightly lower paragnath counts, which may be attributable to the smaller body size of the present material. As remarked upon by these authors L. crosnieri is very similar to L. indicus Kinberg, 1865 , and apparently differs only by the presence of the notopodial prechaetal lobe (=superior notopodial lobe of these authors) in parapodia of the posterior body; this lobe has disappeared by chaetiger 51 in the holotype of L. indicus and was absent from far posterior segments in most of the other material examined according to the redescription of Qiu & Qian (2000: 1138). The other supposed differences cited by León-González & Salazar-Vallejo (2003) including number of papillae in Area VI and distribution along body of notopodial homogomph falcigers are not applicable and appear to have resulted from these authors not considering the full range of variation reported by Qiu & Qian (2000) for L. indicus . Leonnates crosnieri was not collected in the August 2013 survey.

Habitat. Lagoon, fore-reef and reef slope, 4– 30 m.

Type locality. New Caledonia.

Distribution. New Caledonia. First record for Lizard Island and Australia.

Figures

FIGURE 2. A. Composetia marmorata NTM W 22530, preserved, antero-ventral view, pharynx everted; B. Leonnates crosnieri NTM W 23992, preserved, dorsal view; C. L. nipponicus NTM W 23962, preserved, dorsal view; D. Micronereis bansei NTM W 22659, alive, dorsal view; E. Neanthes pachychaeta NTM W 22800, preserved, antero-dorsal view; F. Nereis cf. cirriseta NTM W 22523, alive, antero-dorsal view; G. N. cf. cirriseta NTM W 22523, preserved, antero-dorsal view, pharynx everted; H. N. cf. cirriseta NTM W 22523, preserved, antero-ventral view, pharynx everted. Approximate body widths: A: 2.6 mm; B, C: 5.0 mm; D: 0.4 mm; E: 4.0 mm; F – H: 0.9 mm.