Acmella bauensis, Marzuki & Liew & Mohd-Azlan, 2021
publication ID |
https://dx.doi.org/10.3897/zookeys.1035.60843 |
publication LSID |
lsid:zoobank.org:pub:ED19022E-A170-4DB7-9587-FEFE15D07854 |
persistent identifier |
https://treatment.plazi.org/id/D854D239-B7FD-496D-9A84-AE7B1DCD2418 |
taxon LSID |
lsid:zoobank.org:act:D854D239-B7FD-496D-9A84-AE7B1DCD2418 |
treatment provided by |
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scientific name |
Acmella bauensis |
status |
sp. nov. |
Acmella bauensis View in CoL sp. nov. Figures 15A View Figure 15 , 16A-E View Figure 16 , 17A-C View Figure 17
Material examined.
Holotype (SH 1.24 mm, SW 0.96 mm) (MZU.MOL.20.01), Malaysia, Sarawak, Kuching Division , Fairy Caves, south part of Gunung Kapor, 4 miles Southwest Bau, 1°22'53.97"N, 110°7'2.29"E, coll. M. E. Marzuki, 10.VII.2011 GoogleMaps . Paratypes: 1 ex. (ME0002340), same data as Holotype GoogleMaps .
Differential diagnosis.
This species differs from other Bornean Acmella species by having dull shell surface with inconspicuous, closely spaced spiral striae crossed by inconspicuous growth lines. Acmella conica Vermeulen & Junau, 2007 and Acmella obtusa Vermeulen & Junau, 2007, both from Central Sarawak, have a smaller shell with an elliptic aperture with a flattened parietal side. Acmella minuttisima (Maassen, 2000), from Sumatra, and Acmella subcancellata Vermeulen, Liew & Schilthuizen, 2015, from Sabah have more prominent spiral striae on the shell surface.
Description.
Shell minute, rather thin, translucent, and white. Surface not glossy. Spire conical with slightly convex side, apex rounded, whorls moderately convex, and slightly shouldered. Suture impressed. Protoconch sculpture microscopically cancellated. Teleoconch spiral sculpture with very fine, closely spaced, continuous spiral striae crossed by inconspicuous growth lines just visible at 80 times magnification. Aperture obliquely ovate in outline, with a concave to slightly convex parietal side, transition from parietal to basal side rounded. Peristome simple, expanded but not reflected on the columellar side. Umbilicus open, narrow, 0.08 mm in diameter. Dimensions: height <1.24 mm; width <0.96 mm; the number of whorls <4; aperture height <0.52 mm; aperture width <0.44 mm.
Geographic distribution and habitat.
It is known only from the type locality. Only dry shells were found during the surveys.
Etymology.
The specific epithet Acmella bauensis is from the name of Bau District, where the shells were found.
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.
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Caenogastropoda |
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