Conus (Phasmoconus) armadillo Shikama, 1971

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 : 94

Conus (Phasmoconus) armadillo Shikama, 1971

Fig. 55E

Conus (Asprella) armadillo Shikama, 1971: 34 , text-fig. 2.

Conus armadillo – R̂ckel et al. 1995b: no. 203, pl. 46 figs 12–15.

Graphiconus armadillo – Tucker & Tenorio 2013: 90.

Phasmoconus (Phasmoconus) armadillo – Monnier et al. 2018a: 775.

Material examined

1 lot (1 specimen). See Supp. file 1.

Type material

Holotype “ TAIWAN ” • 73 mm; type locality “ Taiwan ”; KPMY 6027-1852 .

Figured material

NEW CALEDONIA • 54.9 mm; Loyalty Ridge , off New Caledonia, stn DW428; 20º24′ S, 166º13′ E; 420 m depth; 17 Feb. 1989; MUSORSTOM 6 expedition; MNHN ( Fig. 55E ) .

Geographical distribution and bathymetry

Taiwan to the Philippines, Queensland and New Caledonia (Loyalty Islands), at depths between 100 to 500 m.

Remarks

Shell moderately large, ventricosely conical with a spire of moderate height and concave profile. Larval shell multispiral of more than 3 whorls. Radular tooth (Rolán & Raybaudi 1994) with the anterior section shorter than the posterior section. The tooth is serrated, with 11–13 sharp denticles arranged in one single row. Small pointed terminating cusp. Barb present. Blade rounded, covering about 40% of the anterior section of the tooth. Basal spur pointing upwards on top of the rather large base. This species is very similar to Conus (Phasmoconus) kuroharai ( Habe, 1965) . In spite of being a typical component of the deep-water cone fauna, its presence in New Caledonia is only based on one single, dead specimen sampled in Loyalty Ridge at 420 m deep.

Figures

Fig. 55. A–D. Conus (Embrikena) pergrandis Iredale, 1937. A. Loyalty Ridge, 390 m depth, 116.4 mm. B. Loyalty Ridge, 283 m depth, 106 mm. C. Loyalty Ridge, 509 m depth, 114.7 mm. D. Along Toupeti, off New Caledonia, 307‒309 m depth, 60.2 mm. – E. Conus (Phasmoconus) armadillo Shikama, 1971. Loyalty Ridge, 420 m depth, 54.9 mm. – F–L. C. (Ph.) kuroharai (Habe, 1965). F. Banc Kaimon Maru, Norfolk Ridge, 233‒259 m depth, 55.4 mm. G. Loyalty Ridge, 275‒295 m depth, 60.1 mm. H. Loyalty Ridge, 257 m depth, 47 mm. I. E Île des Pins, off New Caledonia, 138‒146 m depth, 36.7 mm (MNHN- IM-2013-66069). J. Banc Munida, Norfolk Ridge, 180‒220 m depth, 30.5 mm. K. Same collection data as for specimen J, 20.6 mm. L. Protoconch of specimen K. – M. C. (E.) pergrandis. Radular tooth of specimen A. – N. C. (P.) kuroharai. Radular tooth of specimen I. Scale bars = 10 mm, unless otherwise stated.