Conasprella (Endemoconus) raoulensis ( Powell, 1958 )

Tenorio, Manuel J. & Puillandre, Nicolas, 2023, Revision of the deep-water cone snail fauna from New Caledonia (Gastropoda, Conoidea), European Journal of Taxonomy 896, pp. 1-134 : 58-59

Conasprella (Endemoconus) raoulensis ( Powell, 1958)

Figs 38I–K , 42

Conus (Kermasprella) raoulensis Powell, 1958: 83 , pl. 9 fig. 1.

Conus raoulensis – R̂ckel et al. 1995b: no. 256, pl. 55 figs 9–12.

Endemoconus raoulensis – Tucker & Tenorio 2013: 341.

Conasprella raoulensis – Monnier et al. 2018a: 213.

Material examined

2 lots (2 specimens). See Supp. file 1.

Type material

Holotype NEW ZEALAND • 18 mm; off Raoul Island , Kermadec Islands; 75–85 m depth; 3 Mar. 1952; NHMD-91129 , previously ZMUC GAS-000805 ( Fig. 38I ).

Figured material

NEW CALEDONIA • 15.1 mm; Coral Sea , Capel Bank, off New Caledonia, stn DW255; 25º15′ S, 159º55′ E; 280‒295 m depth; 7 Oct. 1986; MUSORSTOM 5 expedition; MNHN ( Fig. 38J ) • 16.9 mm; Norfolk Ridge , Banc Kaimon Maru, off New Caledonia, stn DW2093; 24º44′ S, 168º09′ E; 230 m depth; 29 Oct. 2003; NORFOLK 2 expedition; MNHN ( Fig. 38K ) .

Geographical distribution and bathymetry

Known from N New Zealand (Wanganella Bank and Kermadec Islands) and Australia ( Norfolk Island). Two dead specimens were collected in New Caledonia (Norfolk Ridge) and Coral Sea (Capel Bank) at depths between 200‒ 400 m.

Remarks

Shell small (maximum shell length 22 mm), conical to broadly conical with a moderate to high stepped spire. Teleoconch sutural ramps concave with arcuate radial threads. Last whorl with strongly granulose spiral ribs. Protoconch multispiral of about 4 whorls. Radular morphology unknown. No specimens have been sequenced. The two dead specimens collected off New Caledonia exhibit shell features consistent with those of the holotype for the species.

Figures

Fig. 38. A–H. Conasprella (Endemoconus) howelli (Iredale, 1929). A. Holotype, Montague Island, New South Wales, Australia, 26.5 mm (AMS C.57711). B. Banc Kaimon Maru, S New Caledonia, 233 m depth, 21.5 mm. C. Norfolk Ridge, 241‒245 m depth, 13.7 mm. D. Same collection data as for specimen C, 15.1 mm. E. Loyalty Ridge, 260 m depth, 17.1 mm. F. Norfolk Ridge, 315‒327 m depth, 19.3 mm. G. Same collection data as for specimen C, 24.2 mm. H. SE Île des Pins, 210 m depth, 16.3 mm (MNHN-IM-2018-12306). – I–K. Conasprella (Endemoconus) raoulensis (Powell, 1958). I. Holotype, off Raoul Island, Kermadec Islands, New Zealand, 75‒85 m depth, 18 mm (ZMUC GAS- 000805). J. Coral Sea, Banc Capel, 280‒295 m depth, 15.1 mm. K. Norfolk Ridge, Banc Kaimon Maru, 230 m depth, 16.9 mm. – L–M. Conasprella (Endemoconus) howelli. L. Protoconch of specimen C from Norfolk Ridge, 241–245 m depth. M. Radular tooth of specimen from Norfolk Ridge, 241–245 m depth, 12.7 mm. Scale bars = 10 mm, unless otherwise stated.

Fig. 42. Bathymetric range and distribution map for Conasprella (Endemoconus) raoulensis (Powell, 1958). Red circles indicate the points where the species was collected.