Arene lychee, Cavallari & Simone, 2018
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publication ID |
https://doi.org/10.11606/1807-0205/2018.58.23 |
|
DOI |
https://doi.org/10.5281/zenodo.4984879 |
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persistent identifier |
https://treatment.plazi.org/id/F248A021-B811-6F27-FBC6-F961041AF871 |
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treatment provided by |
Carolina |
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scientific name |
Arene lychee |
| status |
sp. nov. |
Arene lychee View in CoL sp. nov.
( Figure 1 View Figure 1 A‑H)
Type material: Holotype MZSP 70301 View Materials . Paratypes: MZSP 93482, 2 shells (juveniles), MZSP 93501, 2 shells, MZSP 135314, 4 shells, same data as holotype, 200 m depth (viii/2005).
Type locality: Brazil, Ceará, off Fortaleza, Canopus Bank, 02°14’25”S, 38°22’50”W, 260 m.
Diagnosis: Shell relatively large, trochiform. Teleoconch sculptured by 3 wide spiral cords (increasing in number, up to 8 on body whorl) bearing large, mostly hollow, scale-like spines and closely-packed, thin axial growth lines, more visible in interspaces; cords separated by equally wide, deep interspaces. Color from white to intense red, darker on spiral cords, and lighter at base; apex yellow.
Description: Shell relatively large (H 7-9 mm), trochoid, slightly taller than wide (H/D ~1.1), with 5 convex whorls; color strong red to white, darker on spiral cords and lighter at base (juveniles are often lighter colored overall; Fig. 1E View Figure 1 ); apex yellow ( Fig. 1B, H View Figure 1 ). Spire medium-sized (height ~1/3 of shell height); apex rounded; spire angle ~85°. Protoconch ( Fig. 1 View Figure 1 G-H) small (W 0.75 mm), protruding, of 1½ whorl; color yellow ( Fig. 1H View Figure 1 ); transition to teleoconch visible as a radial groove ( Fig. 1G View Figure 1 ). Teleoconch with ~3½ convex whorls, whorl profile rounded; sculpture of 3 evenly sized, spiny spiral cords (increasing in number, up to 8 on body whorl) separated by equally wide, deep interspaces; spines angular, large, spaced; on whorls 2 and beyond becoming partially hollow, scalelike ( Fig. 1D View Figure 1 ); axial growth lines closely-packed, thin, more visible in interspaces between spiral cords. Suture barely visible. Aperture rounded, aperture height ~1/3 of shell height, white to light pinkish; inner lip thick, slightly flaring ( Fig. 1A View Figure 1 ), producing short callus; outer lip slightly bending over aperture near whorl attachment ( Fig. 1A, F View Figure 1 ). Shell base convex, sculptured by 4 spiral cords (with smaller spines than upper cords); periumbilical cord with larger, coarser nodules ( Fig. 1C View Figure 1 ); umbilicus narrow, shallow. Operculum unknown.
Distribution: Known only from type locality.
Habitat: Coralline bottoms, 200- 260 m.
Etymology: The specific name, a noun in apposition, is derived from the English common name of the Asian soapberry tree Litchi chinensis (Sapindaceae) . The fruits of L. chinensis bear a strong resemblance to the shell of the described species, having similar coloration, globose outline, and an overall rough,“spiky” aspect.
Measurements (in mm): Holotype 5½ whorls, H = 8.3, D = 7.5.
Material examined: Types. Additional material: Syntype of Arene briareus var. perforata USNM 95025, Barbados, R / V Blake sta. 272, 139 m (05/iii/1879).
| MZSP |
Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo |
| R |
Departamento de Geologia, Universidad de Chile |
| V |
Royal British Columbia Museum - Herbarium |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.