Gemmula lululimi Olivera, 2000

Kilburn, Richard N., Fedosov, Alexander E. & Olivera, Baldomero M., 2012, Revision of the genus Turris Batsch, 1789 (Gastropoda: Conoidea: Turridae) with the description of six new species, Zootaxa 3244 (1), pp. 1-58 : 56-57

Gemmula lululimi Olivera, 2000

Plate 33 , figs A–D

Gemmula lululimi Olivera, 2000: 313 , pls 9–10; Sysoev 2008: pl. 678, figs 4–5a-b. Type loc.: Balut Is., Philippines, 100– 150 m.

Turris (Annulaturris) munizi Vera-Peláez, Vega-Luz & Lozano-Francisco, 2000: 10 : pl. 1, fig. 9, pl. 2, fig. 7, pl. 7, figs 1–3 (as Annulaturris munizi ); Robin 2008: pl. 448, fig. 15. Type loc.: Balut Is., Mindanao Sea, Philippines, ca 30 m, coralline bottom. Syn. Nov.

Description: Shell fusiform (b/l 0.29–0.38), with short, straight siphonal canal (a/l 0.39–0.46), last whorl with rounded periphery, spire straight-sided to slightly cyrtoconoid, whorls convex, without peripheral angle, suture somewhat deep but narrow; outer lip evenly convex, with 6–9 strong spiral threads inside, anal sinus relatively shallow, slightly V-shaped.

Sculptured by well-defined, but rather low and narrow spiral cords, their intervals with thin intermediary threads roughened by crinkled collabral threads. Subsutural cord relatively low, bearing an angular thread, with a weaker one on either side; sulcus very narrow and deep. Sinus cord above median, nearly as prominent as peripheral cord, declivously flattened, bearing 2 spiral threads, strongly crenulate but not gemmulate. Base of penultimate whorl with 2–3 anterior cords, the peripheral cord not particularly prominent, the 3rd cord sometimes weak. Base of last whorl with very approximately 15–25, some weaker and paler, with finer threads in intervals, fine to obsolete on tip of rostrum. Collabral threads distinct, rendering basal cords somewhat granular.

White to pale brown with main spiral ridges orange-brown; protoconch white.

Protoconch (f. Vera-Peláez et al. 2000) papilliform, ca 3.5 convex whorls, with arcuate, opisthocline axial riblets, suture covered by a thin, white ridge.

Attains 90.5 mm in length.

DISTRIBUTION: SW Japan to Southern Philippines and Papua New Guinea, depth reportedly 30 m to ca 360 m.

TYPES: G. lululimi : Holotype and one juvenile paratype presently in BO colln . T. munizi : Holotype in Vera-Lozano colln .

OTHER MATERIAL EXAMINED: JAPAN: off Cape Shiona, Wakayama Prefecture, 150–200 m (Shingo Habu colln, ex Akira Inada); off Irino, Kochi Prefecture, 120–130 m (Shingo Habu colln). PHILIPPINES: Oslob, S. Cebu, 360 m, and Aliguay Is., from fishermen (G. Poppe colln); Aliguay Is., Zamboanga, 24–40 fath. [44–73 m] (BO colln); PAPUA NEW GUINEA: BIOPAPUA Expedition, Stn. DW3770 (MNHN—IM-2009-17042) .

REMARKS: Superficially, this species appears to be intermediate in characters between Gemmula and Turris , but has a sinus cord that is low and non-peripheral, and distinctly crenulate, not truly gemmulate as in the former. G. lululimi appears to be characterised by the brown ridges on a white ground, its short siphonal canal and the strongly crenulated sinus cord.

Figures

PLATE 33. Gemmula lululimi Olivera, 2000: A, B—Holotype of Gemmula lululimi, Balut Is., Mindanao, Philippines, PNMM, 55.7 x 17.7 mm; C, D—Paratype 1, Pamilacan Is., Philippines, BO colln, 67.2 x 23.3 mm.