Microlinices apiculus, Simone, 2014
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publication ID |
https://doi.org/ 10.5252/z2014n3a2 |
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persistent identifier |
https://treatment.plazi.org/id/7C5BCE66-FFDB-195F-81A8-D37A94C1FD5E |
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treatment provided by |
Felipe |
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scientific name |
Microlinices apiculus |
| status |
n. gen., n. sp. |
Microlinices apiculus View in CoL n. gen., n. sp. ( Fig. 8 View FIG C-G)
HOLOTYPE. — MNHN 27150 About MNHN .
PARATYPES. — MNHN 27151 About MNHN , 9 About MNHN shells ; MZSP 105146 View Materials , 6 View Materials shells from type locality .
TYPE LOCALITY. — Brazil. Espírito Santo: off Conceição da Barra, MD 55 sta. CB 76, 18°58’S, 37°49’W, 637 m, 27. V.1987 (coll. Bouchet, Leal & Métivier).
DIAGNOSIS. — Shell c. 5 mm, c. 105-118% taller than wide. Umbilicus open, narrow, upper region covered by thick callus, inner middle fold wanting. Sculpture lacking, surface opaque, white. Protoconch blunt, of 1.5 whorls, normally eroded. Spire angle c. 90-110°.
DESCRIPTION
Shell ( Fig. 8 View FIG C-G)
Diameter of c. 5 mm; height c. 105-118% of width; general form globose. Color pure white, mostly with irregular erosion furrows scantly splayed on older portions. Protoconch blunt, of 1.5 rounded whorls ( Fig. 8D, F View FIG ); surface smooth, opaque; diameter c. 0.9 mm, occupying c. 18% of upper shell surface. Teleoconch of c. 2.5 whorls; suture well marked; spire angle c. 90-110° ( Fig.8D, G View FIG ). Sculpture absent except for growth lines and axial weak undulations; undulations slightly stronger in umbilicus. Suture shallow, marked by subsutural low shoulder at angle of c. 130° ( Fig. 6D, E View FIG ). Aperture semicircular, wide, occupying c. 70% of shell height and c. 43% of shell width; outer lip thick, weakly prosocline ( Fig. 8E View FIG ), simple; inner lip slightly concave to almost straight ( Fig. 8C, G View FIG ), upper half covered by callus, about as wide as lower half. Umbilicus lacking middle fold, narrow, open; c. 1/2 covered by callus with straight, vertical edge; its aperture occupying c. 5% of lower surface.
Measurements (width and height in mm)
Holotype ( Fig. 8 View FIG C-F): 5.3 × 5.6.
Paratype: MZSP 105146 ( Fig. 8G View FIG ): 4.4 × 5.2.
Habitat
367m depth, muddy bottoms (no living specimens).
Etymology
The specific epithet is derived from the Latin word apiculus , meaning point, tip, an allusion to the pointed apex of the shell.
| MD |
Museum Donaueschingen |
| CB |
The CB Rhizobium Collection |
| 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.