“Trophon leptocharteres n.sp.
Leptocharteres – Gr. Having slender lamellae – pertaining to the axial sculpture
Material: Borge Bay, Signy Island, 15-30 m, 8 specimens.
Holotype: NMW.1979.005.54, Bare Rock, 01.IX.1976.
Paratypes: NMW.1979.002.50, 51, 52, 53, 55, 56, 57 and AMS.
Dimensions:
Height
Breadth
24.25 mm
13.9 mm
Holotype
26.2 mm
15.9 mm
Paratype
19.6 mm
12.2 mm
Paratype
17.4 mm
10.7 mm
Paratype
15.5 mm
8.7 mm
Paratype
13.5 mm
7.9 mm
Paratype
10.1 mm
6.2 mm
Paratype
Diagnoses
Shell: Moderate size. Brittle, fusiform, short-spired of 6 whorls. Protoconch 1¼-1½ whorls. Teleoconch with a short spire, body whorl 73-80% of total height. Periphery rounded, sutures slightly impressed. Sculpture of thin raised axial lamellae numbering 17-22 on the body whorl. The lamellae are sinuous, the waves corresponding to weak spiral ridges in the interspaces. In large shells the lamellae are frequently broken and worn and the whole shell is extensively encrusted. Aperture large, ovate pyriform, outer lip thin, columella smooth, siphonal canal short. Shell white to grey.
Operculum: Horny ovate, nucleus terminal.
Radula: Formula 1-1-1. Central tooth tricuspid with a small denticle between the cusps. Lateral teeth simple, L-shaped (Fig. 35).
Remarks
Trophon leptocharteres resembles a small form of the magellanic T. gervesianus. Of the Antarctic species it is close to T. echinolamellatus Powell (1951) and T. distantelamellatus Strebel (1908). In T. echinolamellatus hollow spines are present at the intersections of the axial and spiral elements of the sculpture. T. distantelamellatus (Fig. 41) has well developed but low axial lamellae which are more sinuous due to the deeper fluting at their intersections with the spiral elements. The number of axial lamellae are generally greater in T. distantelamellatus; 16-28 on the both whorl compared 16-22 in T. leptocharteres. The spacing of the ribs in T. distantelamellatus is less; 0.8 mm ± 0.17 on the body whorl in shells ranging in height from 14.3 to 18.6 mm compared to 1.3 mm ± 0.22 in T. leptocharteres ranging in height from 15.4 to 17.4 mm. The spiral sculpture of T. distantelamellatus is well developed around the siphonal canal giving rise to 2-3 scaled ridges. This feature is entirely absent in T. leptocharteres.”
(Oliver & Picken, 1984: 109-110)
Trophon leptocharteres is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.[1]
Trophon leptocharteres is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
Trophon leptocharteres is een slakkensoort uit de familie van de Muricidae.[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1984 door Oliver & Picken.
Bronnen, noten en/of referenties
Trophon leptocharteres là một loài ốc biển, là động vật thân mềm chân bụng sống ở biển trong họ Muricidae, họ ốc gai.[1]
Trophon leptocharteres là một loài ốc biển, là động vật thân mềm chân bụng sống ở biển trong họ Muricidae, họ ốc gai.
