Profundiconus maribelae Tenorio & Castelin 2016, sp. nov.
Creators: name: Tenorio, Manuel J.
name: Castelin, Magalie
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Neogastropoda
Conidae
Profundiconus
Profundiconus maribelae

description: Profundiconus maribelae sp. nov.
urn:lsid:zoobank.org:act:8CAB54B6-D03A-49B7-A289-3F46FCCA9366
Figs 7A–G, 8
Profundiconus n. sp. c cf. loyaltiensis – Puillandre et al. 2014: Supplementary Material 1 (unfigured).
Etymology
This species is dedicated to Maribel Albarrán Quintanilla, wife of the first author and a shell-lover, in recognition for her support and constant encouragement to the first author at all times.
Type material examined
Holotype SOLOMON ISLANDS: 27.5 × 12.6 mm, R/V Alis, SALOMONBOA 3 Expedition, st. CP 2767, Guadalcanal, 9°19' S, 160°6' E, 416–425 m (MNHN IM-2007-34878; Fig. 7A; GenBank accession number (cox1 sequence): KJ550452).
Paratypes
SOLOMON ISLANDS: 30.0 × 12.5 mm, R/V Alis, SALOMON 2 Expedition, st. CP 2207, NW Isabel, 7°43' S, 158°29' E, 336–341 m (MNHN IM-2007-30935; paratype 1; Fig. 7B; GenBank accession number (cox1 sequence): KJ550352); 30.4 × 13.1 mm, R/V Alis, SALOMON 2 Expedition, st. CP 2247, NW Isabel, 7°45' S, 156°25' E, 686–690 m (MNHN IM-2007-30338; paratype 2; Fig. 7C); 27.2 × 12.4 mm (broken shell), R/V Alis, SALOMONBOA 3 Expedition, type locality, 416–425 m (MNHN IM-2007- 34880; paratype 3; Fig. 7E).
Type locality
SOLOMON ISLANDS: Guadalcanal, 9°19' S, 160°6' E, 416–425 m (SALOMONBOA 3 st. CP 2767).
Other material examined
SOLOMON ISLANDS: 31.5 × 14.4 mm, R/V “Alis”, SALOMONBOA 3 Expedition, type locality (MNHN IM-2007-34879; Fig. 7F; GenBank accession number (cox1 sequence): KJ550352). Note: This specimen was photographed (http://coldb.mnhn.fr/catalognumber/mnhn/im/2007-34879) and sequenced, but the shell was destroyed in the process and is no longer available.
Description
Morphometric parameters: S L = 27–32 mm; RD = 0.55–0.62; RSH = 0.21–0.26; PMD = 0.89–0.93.
Shell moderately small. Maximum length 31.5 mm. Shell profile conical, with straight to very slightly convex sides and spire moderate to high. Spire profile straight, stepped. Paucispiral protoconch with 1.5–1.75 whorls, brownish, glossy and translucent (Fig. 7D). Teleoconch whorls stepped, ridged with small but strong nodules which persist in shoulder in most cases. Sutural ramp concave, with subsutural ridge and 3 to 4 strong spiral cords crossed by thin radial threads. Shoulder carinated, most often covered with small nodules along shoulder angle. Early teleoconch whorls pure white. Late teleoconch whorls in vicinity of shoulder area may exhibit some small, irregular brown blotches. Last whorl with grooves forming flat spiral ribbons, which may extend from shoulder to base. In some specimens sculpture of grooves and flat spiral ribbons in last whorl reduced to subshoulder area and basal half. Ground colour white overlaid with sparse brown, axially arranged flammules or blotches. White ground colour predominates in all specimens studied. Columella and aperture white. Anal notch shallow. Periostracum yellow-brown, thin and translucent. Operculum present, serrated on left border.
Radular teeth examined in paratype 1 (Fig. 7G). 38 teeth in radular sac. Radular tooth medium-sized, its total length relative to shell length S L/T L = 45. Anterior portion much shorter than posterior section of tooth (T L/AP L = 3.43). With one barb and pointed, well-defined blade which covers 50% of anterior portion of tooth. With external cusp located at approximately lower quarter of anterior portion of tooth, extending between 75% and 90% of length of anterior portion of tooth. External cusp laterally expanded and serrated, with 5 small denticles. Immediately below waist with characteristic fringe composed of closely spaced projections pointing towards apex. Shaft fold present. Large and prominent basal spur present on top of slanted base of tooth.
Distribution and habitat
Known from the Solomon Islands, including the New Georgia Group (Vella Lavella Island), Santa Isabel and Guadalcanal, at depths between 336 and 690 m (Fig. 8).
Remarks
The specimens of P. maribelae sp. nov. from the Solomon Islands form a monophyletic group supported by BI and ML analyses. P. maribelae sp. nov. was initially referred to as P. cf. loyaltiensis in the phylogenetic analysis, given the resemblance of its shell to that of P. loyaltiensis, a species known only from New Caledonia (Fig. 1H). However, the shell of P. maribelae sp. nov. attains a larger size (27–32 mm for maribelae vs. 21.5–26 mm for loyaltiensis). The spire outline in P. maribelae sp. nov. is straight rather than deeply concave as occurs in P. loyaltiensis. The sculpture of flat spiral ribbons in the last whorl is much more developed in P. maribelae sp. nov. than in P. loyaltiensis. The most evident difference between the two species is that the shell of P. loyaltiensis is white and patternless, whereas the shell of P. maribelae sp. nov. exhibits a pattern of sparse, axially arranged brown flammules or blotches. The morphology of the radular teeth of P. maribelae sp. nov. and P. loyaltiensis is very similar, but they differ in their relative sizes, being larger in P. loyaltiensis (S L/T L) = 30–37; versus 45 for P. maribelae sp. nov.). The shell of P. teramachii (Fig. 1B) is easily separated from that of P. maribelae sp. nov. by its much larger size, its pale, straw-yellow, patternless shell, smooth sculpture of the last whorl, usually much less developed nodules, absence of strong cords on the sutural ramp, and by its multispiral instead of paucispiral protoconch. P. maribelae sp. nov. is distantly related to both P. loyaltiensis and P. teramachii in the phylogeny presented here.
description: Published as part of Tenorio, Manuel J. & Castelin, Magalie, 2016, Genus Profundiconus Kuroda, 1956 (Gastropoda, Conoidea): Morphological and molecular studies, with the description of five new species from the Solomon Islands and New Caledonia, pp. 1-45 in European Journal of Taxonomy 173 on pages 19-21, DOI: 10.5852/ejt.2016.173, http://zenodo.org/record/1182495