Pygmaepterys karukerensis, 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 : 852

Pygmaepterys karukerensis n. sp.

( Figs 5G, H ; 12B )

TYPE MATERIAL. — Holotype ( MNHN IM-2000-27730 ), KARUBENTHOS: stn GS13, 16°02.4’N, 61°45.6’W, at 50 m.

TYPE LOCALITY. — Pigeon Island , Guadeloupe, 16°02.4’N, 61°45.6’W (stn GS13), at 50 m deep.

ETYMOLOGY. — From Karukera, name of the Guadeloupe Island in the Caribbean langage.

DESCRIPTION OF HOLOTYPE

Protoconch 1.5 whorls. Teleoconch biconic, H 9 mm, D 5 mm. Spire high of five whorls. Last whorl rounded, 70% of the total length of teleoconch. Apical angle of 50°. Spiral sculpture consisting in marked primary cords. First whorl: appearance of P1, P2 and IP on the the sutural ramp; last whorl: sutural ramp; convex part of the whorl, IP; P1, P2, P3, P4 and P5 well developed; siphonal canal, P6 placed on the top, ADP and MP. Axial sculpture with eight lamellose varices since the first whorl. Aperture ovate. Columellar lip slightly erected anteriorly with three folds on the anterior part of the lip and two folds posteriorly. Outer lip erected and crenulated. Internal denticles: ID, D2, D3, D4 and D5 simple. Siphonal canal of 25% of the total length of teleoconch and dorsally recurved. Squamous microsculpture with growing lamellae. Shell creamy white with irregular dark intervarical band on the sutural band. Aperture creamy. Operculum and radula unknown.

COMPARISON

Pygmaepterys karukerensis n. sp. differs from P. germainae ( Fig. 5 J-M) by a higher spire and a narrower shape. In addition, P. germainae exhibits a shoulder spine lacking in P. karukerensis n. sp. Compared with P. aliceae ( Fig. 5I ), P. karukerensis n. sp. bears well developed columellar folds and lacks D1. Pygmaepterys pointieri n. sp. differs also from P. karukerensis n. sp. by its shoulder spines (P1), by a well developed D1 and by lacking folds on the columellar lip.

Figures

FIG. 5. — A-F, Pygmaepterys pointieri n. sp.: A, B, ventral and dorsal views, holotype MNHN-IM-2013-8488, Gosier Island, at 6 m deep; C, ventral view, paratype A, MNHN-IM-2013-7767, Gosier Island, at 6 m deep; D, E, ventral and dorsal views, paratype D, Petite Terre, 15 m deep; F, dorsal view, paratype B, MNHN-IM-2013-7985, Gosier Island, at 6 m deep; G, H, ventral and dorsal views, P. karukerensis n. sp., holotype MNHN IM-2000-27730, Pigeon Island, at 50 m deep; I, ventral view, P. aliceae (Petuch, 1987), holotype USNM 859846, Southern coast of Bonaire Island, Netherlands Antilles, at 2 m deep; photo courtesy of E. Strong (USNM); J-M, P. germainae Vokes & D’Attilio, 1980; J, ventral view, holotype USNM 783319, off Pta. Higüero, northwestern Puerto Rico in 12-90 m deep; photo courtesy of E. Strong (USNM); K-M, ventral, dorsal views and protoconch, coll. DL, Fajou Island, Guadeloupe, 80-90 m deep. Scale bars: A-L, 5 mm; M, 0.5 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.