Muricopsis guadalupensis, Garrigues & Merle, 2014

Garrigues, Bernard & Merle, Didier, 2014, Nine new species of Muricidae Rafinesque, 1815 (Mollusca, Gastropoda) from the French Antilles, Zoosystema 36 (4), pp. 841-864 : 854

Muricopsis guadalupensis n. sp.

( Figs 6 A-C; 12 D)

TYPE MATERIAL. — Holotype ( MNHN IM-2000-27731 ), Malendure , Guadeloupe, at 10 m deep , one paratype (coll. DL), same locality , one paratype (coll. BG), same locality.

TYPE LOCALITY. — Malendure , Guadeloupe, at 10 m deep.

ETYMOLOGY. — From Guadalupa (latin name of Guadeloupe).

DESCRIPTION OF HOLOTYPE

Protoconch unknown. Teleoconch biconic, H 16.1 mm, D 7.7 mm. Six teleconch whorls. Spire acute of 4.5 whorls. Last whorl of 71% of the total length of teleoconch. Apical angle of 45°. Spiral sculpture consisting in marked primary cords. First whorl: appearance of IP and P1. Second whorl: IP, P1 and P2. Last whorl: sutural ramp, IP and the secondary cord abis; convex part of the whorl: P1, P2, P3, P4, P5 well developed and the secondary cords s1, s2, s3, s4, s5; siphonal canal, P6 atrophied, ADP, MP and the secondary cord s6. Axial sculpture: twelve varices on the first whorl, eleven varices from the second to the fourth whorl, nine varices on the fifth whorl and seven varices on the last whorl. Aperture ovate. Columellar lip adherent, with two anterior folds.Outer lip strongly crenulated with denticles ID, D2, D3, D4 and D5. D1 missing, D2 hypertrophied. Siphonal canal open, of 21% of the total length of teleoconch, dorsally and the left turned. Microsculpture with small punctae at the intersection between the spiral cords and the growing lamellae. Shell red brown, darker patches when the primary cords cross the varices. Aperture beige. Operculum and radula unknown.

COMPARISON (SEE ALSO TABLE 2 )

Muricopsis guadalupensis n. sp. is compared with M. caribbaea (Bartsch & Rehder, 1939) ( Fig. 6G, H ) occurring from Florida to the north coast of South America and to M. marcusi Vokes, 1994 ( Fig. 6 D-F) from the Northern Brazil. The last whorl of M. caribbaea is more rounded. It displays broader primary cords, white P2 and P4 and orange IP, P1, P3, P5, P6 and ADP, whereas M. guadalupensis n. sp. is monochromatic. Muricopsis marcusi possesses eight varices on the four first whorls, instead eleven to twelve in M. guadalupensis n. sp. Primary cord spines are present on the last whorls of M. marcusi , whereas they are missing in M. guadalupensis n. sp.

Figures

FIG. 6. — A-C, Muricopsis guadalupensis n. sp.: A, B, ventral and dorsal views, holotype, MNHN IM-2000-27731, Malendure,at 10 m deep; C, ventral view,paratype DL.D-F, M.marcusi Vokes,1994: D, E, ventral and dorsal views), coll. BG,Guarapari Channel, Espirito Santo State, Brazil,on rocks at low tide; F, ventral view,coll.BG, Guarapari Channel,Espirito Santo State, Brazil,scuba under rocks in 8-12 m deep;G, H, M. caribbaea (Bartsch & Rehder,1939): G, ventral view,holotype USNM 472617,Old Providence Island,Colombia, photo courtesy of E. Strong (USNM); H, ventral view, coll. BG, St Anne, Guadeloupe, on reef. Scale bar: 10 mm.

FIG. 12. — Morphology of spiral cords and denticles: A, Pygmaepterys pointieri n. sp., holotype MNHN-IM-2013-8488, Gosier Island, at 6 m deep; B, P. karukerensis n. sp., holotype MNHN IM-2000-27730, Pigeon Island, at 50 m deep; C, Lindapterys domlamyi n. sp., holotype MNHN IM-2000-27732; D, Muricopsis guadalupensis n. sp., holotype MNHN IM-2000-27731, Malendure, Guadeloupe, at 10 m deep; E, Murexsul hexagonus (Lamarck, 1816), lectotype (MHNG 1099/41/1). Abbreviations: see Material and methods. Scale bars: 5 mm.