Hemilienardia ocellata ( Jousseaume, 1884 )

Fedosov, Alexander E., Stahlschmidt, Peter, Puillandre, Nicolas, Aznar-Cormano, Laetitia & Bouchet, Philippe, 2017, Not all spotted cats are leopards: evidence for a Hemilienardia ocellata species complex (Gastropoda: Conoidea: Raphitomidae), European Journal of Taxonomy 268, pp. 1-20 : 7-9

publication ID	https://doi.org/ 10.5852/ejt.2017.268
DOI	https://doi.org/10.5281/zenodo.3844381
persistent identifier	https://treatment.plazi.org/id/EF628786-1030-5672-FDFE-80739AFE4477
treatment provided by	Carolina
scientific name	Hemilienardia ocellata ( Jousseaume, 1884 )
status

Treatment

Hemilienardia ocellata ( Jousseaume, 1884) View in CoL

Figs 2 View Fig A–D, 3A–C, 4B

Lienardia ocellata Jousseaume, 1884: 186 , pl. 4, fig. 4. Lienardia (Hemilienardia) ocellata – Powell 1966.

Hemilienardia ocellata View in CoL – Hedley 1922: 297. — Loch 1992: 3, fig. 4. — B.J. Smith 2003: 257. — Sysoev 2008: 744, pl. 667, figs 5–6.

Material examined

Syntype

MAURITIUS: 4.0 mm (dd - Fig. 2 View Fig A–B) ( MNHN IM-2000-3128).

Other material

MALDIVES: Ari Atoll, Maagau Kandu, 25 m, private collection of S. Gori (1 dd, 3.1 mm - Fig. 3A View Fig ).

PHILIPPINES: PANGLAO 2004: stn B1, Panglao Island, Alona Reef, 9°33.0' N, 123°46.5' E, 8–14 m (2 lv, 3.3 mm, 3.4 mm); stn B2, Panglao Island, Alona Reef, 9°33.0' N, 123°46.5' E, 5 m (1 lv, 2.8 mm); stn B10, Panglao Island, Momo Beach, 9°36.5' N, 123°45.6' E, 3–14 m (1 lv, 2.8 mm); stn B13, Bohol Island, Baclayon Takot, 9°37.1' N, 123°52.6' E, 3–5 m (2 lv, 2.8 mm, 3.2 mm); stn B17, Panglao Island, Bingag, 9°37.5' N, 123°46.9' E, 3–21 m (1 lv, 2.9 mm); stn B20, Bohol Island, Ubajan, 9°41.5' N, 123°51.0' E, 2–8 m (1 lv, 2.9 mm); stn B38, Balicasag Island, 9°30.9' N, 123°40.8' E, 17–18 m (1 lv, 2.7 mm); stn L69-73, Balicasag Island, 9°30.7' N, 123°40.9' E, 90–98 m (1 dd); stn L74-75, Balicasag Island, 9°30.7' N, 123°40.9' E, 120–139 m (1 lv, 3.4 mm); stn S1, Panglao Island, Biking, 9°35.3' N, 123°50.5' E, 5 m (1 lv, 2.9 mm); stn S7, Panglao Island, Sungcolan Bay, 9°38.5' N, 123°49.2' E, 1–4 m (3 lv, 2.8 mm, 3.2 mm, 3.2 mm); stn S13, Bohol Island, Baclayon Takot, 9°37.1' N, 123°52.6' E, 8–15 m (1 lv, 2.7 mm); stn S14, Pamilacan Island, 9°29.3' N, 123°55.1' E, 5–12 m (1 lv, 3.1 mm); stn S16, Panglao Island, Bingag, 9°37.6' N 123°47.3' E, 15–18 m (1 lv, 3.0 mm).

INDONESIA: Togian Islands: stn Tog13, Batudaka Island, 0°29.8' S, 121°36.9' E, 36–39 m (1 dd, 3.6 mm; PS- 020554); stn Tog14, Batudaka Island, 0°29.8' S, 121°36.9' E, 21–25 m (1 dd); stn Tog22, Batudaka Island, 0°31.0' S, 121°37.1' E, 20–22 m (1 dd, SMF); stn Tog34, Pasir Tengah Atoll, 0°25.0' S, 121°38.9' E, 23–26 m (1 dd, SMF).

PAPUA NEW GUINEA: KAVIENG 2014: stn KB04, NW point of Nusa Island, 2°33.9' S, 150°46.7' E, 15–17 m (1 dd); stn KB08, E of N Cape, 2°33.2' S, 150°48.2' E, 13 m (3 dd); stn KB16, between Big Nusa and Little Nusa, 2°34.6' S, 150°46.3' E, 13–14 m (2 dd); stn KB26, entrance of Albatross Passage, 2°44.6' S, 150°43' E, 9–15 m (3 dd); stn KB28, S side of Baudisson Island, 2°43.7'S, 150°38.4' E, 15–26 m (1 dd); stn KB36, N side of Wadei Island, 2°38.8' S, 150°38.4' E, 3–8 m (1 lv); stn KB38, S side of Patio Island, 2°36.2' S, 150°31.6' E, 6–8 m (4 lv); stn KB58, N point of Nusalomon Island, 2°34.1' S, 150°37.5' E, 12 m (3 lv); stn KB64, New Ireland mainland, N coast, 2°33.5' S, 150°48.8' E, 19 m (1 dd); stn KPS09, Baudisson Island, 2°41.6' S, 150°37.2' E, 18–27 m (2 dd, 3.3 mm, 3.4 mm; PS- 020555); stn KPS10, Baudisson Island, 2°41.6' S, 150°37.2' E, 12–14 m (3 dd, 2.7 mm, 2.8 mm, 3.5 mm); stn KPS11, Lemus Island, 2°38.3' S, 150°37.4' E, 8–19 m (2 dd, 2.5 mm, 2.9 mm); stn KS09, W of Nago Island, 2°36.1' S, 150°45.9' E, 15–16 m (2 dd); stn KS33, E of Nusaum Island, 2°38.2' S, 150°38.7' E, 8–10 m (2 lv); stn KS51, E side of Anelaua Island, 2°35.2' S, 150°30.5' E, 2–4 m (1 dd).

MARSHALL ISLANDS: Kwajalein Atoll, ocean side of reef, shell grit, 70 feet, leg. W. Blacketer, 2007 (1 dd, 3.3 mm; PS- 020491).

VANUATU: Expedition SANTO 2006: stn DB80, 15°37.1' S, 167°07.5' E, 18 m (2 lv, 2.5 mm, 2.8 mm); stn FB 43, 15°28.4' S, 167°14.9' E, 19 m (1 lv, 2.6 mm); stn FB 56, 15°35.2' S, 167°02.1' E, 3–18 m (2 lv, 2.7 mm, 3.0 mm); stn ZB06, 15°36.8' S, 167°01.3' E, 30 m (4 lv, 2.3 mm, 2.4 mm, 2.5 mm, 2.7 mm); stn ZB20, 15°36.31' S, 167°05.4' E, 15–20 m (3 lv, 2.7 mm, 3.2 mm, 3.9 mm).

NEW CALEDONIA:Expedition MONTROUZIER:Secteur de Koumac,stn1319, 20°44.7'S, 164°15.5'E, 15–20 m (1 lv, 3.6 mm - Figs 2D View Fig , 3 View Fig B–C); Secteur de Koumac, stn 1357, 20°30.2' S, 166°26.4' E, 25–35 m (1 lv, 3.3 mm); Secteur de Nouméa, stn 1318, 20°41.4' S, 164°14.8' E, 20–30 m (1 lv, 3.6 mm).

LOYALTY ISLANDS: Lifou, Baie du Santal, Atelier LIFOU 2000: stn 1423, 20°54.0' S, 167°07.3' E, 12 m (2 lv, 3.5 mm, 3.6 mm); stn 1424, 20°54.9' S, 167°03.0' E, 4 m (1 lv, 3.7 mm); stn 1429, 20°47.5' S, 167°07.1' E, 8–18 m (2 lv, 3.3 mm, 4.4 mm - Fig. 2 C View Fig ); stn 1432, 20°53.5' S, 167°02.7' E, 8–18 m (1 lv, 3.2 mm); stn 1436, 20°55.5' S, 167°04.2' E, 10–20 m (1 lv, 3.6 mm); stn 1457, 20°46.8' S, 167°02.75' E, 5–10 m (1 lv, 3.1 mm).

FIJI: MUSORSTOM 10: stn CP1334, 16°51' S, 178°14' E, 251–257 m (1 dd, 4.8 mm).

Description

SHELL. Very small (3.0– 4.5 mm), ovate to fusiform (b/h 0.47–0.5; lw/h 0.65–0.67; a/h 0.48–0.5), pointed at its tip. Teleoconch usually of 3–3.5, up to 5 whorls. Suture incised, undulating. Early 1–1.5 teleoconch whorls almost cylindrical, with distinct shoulder; later whorls strongly convex in outline, with narrower concave subsutural ramp delineating adjacent whorls. Sculpture of strong and wide rounded axial ribs (10 on last whorl), well pronounced on whorls periphery and vanishing adapically. Axial ribs overridden by evenly interspaced, low and rounded spiral cords with shallow interstices. Late spire whorls sculptured with three spiral cords, adapical one much weaker, than succeeding. Microsculpture of dense microtubercles covering entire teleoconch surface. Last adult whorl and shell base with 6–7 subequal spiral cords followed by 3–5 oblique rows of tubercles on fasciole. Siphonal canal stout, moderately long, notably notched at its tip. Aperture narrow, elongated, contorted due to strong denticles of outer lip directed inwards. Adapicalmost of four denticles strongest. Inner lip strong, with distinct varix. Anal sinus subsutural, rounded, moderately deep and slightly constricted by callous subsutural tubercle.

PROTOCONCH. White, conical, of 3.3–3.5 whorls, PI whorls evenly rounded with fine sculpture of spiral cords and weak axial riblets. Late ~1.5 whorls with slightly flattened subsutural area and convex periphery, sculptured with subsutural row of fine, evenly interspaced axial riblets and with somewhat “crumpled” diagonally cancellate sculpture on periphery. Protoconch-teleoconch transition distinct, with moderately deep subsutural notch.

COLOUR. Background colour white, spire whorls with one row of large, oval, dark-olive spots encircled by a fine darker line, situated in interspaces between axial ribs above whorl periphery. Shell base with another row of dark olive spots and smaller regular spots on siphonal canal. Periphery of last adult whorl with bright yellow spiral line in interspace between third and fourth spiral cords, this line also visible on spire whorls, right above suture. Protoconch off-white.

RADULA. Small, of 7 transversal rows, consisting of narrowly triangular, pointed, marginal teeth, with slightly convex dorsal side ( Fig. 4 View Fig B–C). Tooth length 130–140 μm (about 7.3% of aperture height), tooth width about 40 μm.

Distribution and habitat

Distributed throughout the Indo-Pacific from Mauritius and the Maldives to the Philippines, Guam, Marshall Islands, Indonesia, Papua New Guinea, Queensland, Vanuatu, New Caledonia and Fiji, in shallow water.

Remarks

Hemilienardia ocellata can be distinguished from other eyespot-patterned Hemilienardia species by the ovate outline of the teleoconch and a proportionally very large protoconch. Hemilienardia lynx sp. nov. is undoubtedly the closest species in terms of size and shell shape. However, the two species differ in the number of protoconch whorls and the shape of the ocellae; these are ovate in H. ocellata and more “squarish” in H. lynx sp. nov. Hemilienardia acinonyx sp. nov. differs from H. ocellata by its orthoconoid spire, smaller protoconch and larger adult size; in addition, specimens of H. acinonyx sp. nov. have a characteristic spiral thread in the interval between the third and fourth spiral cords, while the second spiral cord is often strongly pronounced, giving a somewhat shouldered appearance to the late teleoconch whorls. Finally, H. pardus sp. nov. may be easily separated from H. ocellata by its broad biconical shell with very narrow aperture and long siphonal canal.