Trophon vangoethemi Houart, 2003

Houart, Roland & Sellanes, Javier, 2006, New data on recently described Chilean trophonines (Gastropoda: Muricidae), description of a new species and notes of their occurrence at a cold seep site, Zootaxa 1222, pp. 53-68 : 58

Trophon vangoethemi Houart, 2003

( Figs 11–14 , 31–32 )

Trophon vangoethemi Houart, 2003: 104 , figs 6–7, 31, 32, 34

Type material

Holotype IRSNB IG 29715/513 (16.9mm), Paratypes: 1 MNHN (14.7mm), 2 RH (17.1 & 12.4mm), 1 G.T. Poppe coll. (16.0mm). Chile, trawled off Itata, north of Concepción, in about 350m, muddy bottom, 36°50’S, 73°03’W.

Additional material examined

R/V AGOR Vidal Gormáz, (Sta. AGT 2, 30/11/2003), off Concepción, Chile, 36°25.49’S, 73°35.72’W, 530m, 1dd (18.14mm) (MNHNCL­201647); R/V AGOR Vidal Gormáz off Concepción (Sta. AGT 4, 10/10/2004), 36º10.50’S, 73º35.95’W, 563–613m, 8 lv. (6 JS, 2 RH) (from 14.82 to 18.49mm).

Remarks

All known specimens are very similar though some of the new specimens reach a larger size and have eroded axial lamellae.

The radula ( Fig. 32 ) is rachiglossate with a rachidian tooth bearing a long, broad, central cusp, a small, lateral denticle and a moderately long, broad, lateral cusp. A small denticle is occasionally present between the central cusp and the lateral denticle.

The operculum ( Fig. 31 ) is elliptical with a terminal nucleus.

Figures

FIGURES 1 – 14. 1 – 4, Trophon condei Houart, 2003; 1, Chile, Ancud, trawled in 1350 m, holotype IRSNB­IG 29715 / 512, 61.4 mm; 2, Chile, 36 ° 21.65 ’ S, 73 ° 44.42 ’ W, 900 ­ 904 m (AGT 5), JS, 41.6 mm; 3 – 4, Chile, off Concepción, 36 ° 21.46 ’ S, 73 ° 44.08 ’ W, 930 m, MNHNCL­ 201646, 41.8 mm; 5 – 10, Trophon ceciliae Houart, 2003; 5 – 6, Chile, trawled off Caldera, III Región, 434 m, coll. E. Garcia, nr 25029, 43.9 mm; 7 – 8, Chile, off Concepción, 36 ° 21.46 ’ S, 73 ° 44.08 ’ W, 930 m, JS, 28.7 mm (juvenile); 9, Chile, Antofagasta, 1000 m, holotype MNHN Moll 4544, 41.5 m; 10, Chile, Antofagasta, 1300 m, paratype RH, 16.5 mm (juvenile); 11 – 14, Trophon vangoethemi Houart, 2003; 11 – 12, Chile, trawled off Itata, north of Concepción, in about 350 m, Holotype IRSNB IG 29715 / 513, 16.9 mm; 13 – 14, Chile, off Concepción, 36 º 10.50 ’ S, 73 º 35.95 ’ W, 563 – 613 m, JS, 13. 14.8 mm; 14: 16.8 mm.

FIGURES 27 – 35. 27 – 29, Coronium wilhelmense (Ramírez­Bohme, 1981); 27 – 28, Chile, off Valdivia, 39 ° 50 ’ S, 74 ° 30 ’ W, 500 m, JS, 18.4 mm; 29, Protoconch. Scale bar: 0.5 mm; 30, Protoconch of Trophon acanthodes (Watson, 1882) [syntype BM (NH)] 1887.2. 9.570. Scale bar: 0.5 mm; 31 – 32, Trophon vangoethemi; 31, Operculum, Chile, off Concepción, 36 º 10.50 ’ S, 73 º 35.95 ’ W, 563 – 613 m (scale bar: 1.2 mm); 32, Radula, male, same locality (scale bar: 60 µm); 33, Radula of Trophon condei, female, off Concepción, Chile, (Sta. AGT 1, 11 / 30 / 2003), 36 ° 21.46 ’ S, 73 ° 44.08 ’ W, 930 m, (scale bar: 120 µm); 34 – 35, Radula of Pagodula concepcionensis n. sp., female, off Concepción, Chile, (Sta. AGT 1, 11 / 30 / 2003), 36 ° 21.46 ’ S, 73 ° 44.08 ’ W, 930 m, (scale bar: 60 µm).