Strepsitaurus manduensis, Taylor & Johnson & Stankowski, 2015
publication ID |
https://doi.org/ 10.1111/zoj.12238 |
persistent identifier |
https://treatment.plazi.org/id/038787CE-C12A-FFB4-72B8-FE924DAF2033 |
treatment provided by |
Felipe |
scientific name |
Strepsitaurus manduensis |
status |
sp. nov. |
STREPSITAURUS MANDUENSIS View in CoL SP. NOV.
FIGURES 1 View Figure 1 , 3 View Figure 3 , 7, 12 View Figure 12
Type locality
Western Australia, Cape Range, Mandu Mandu Gorge (22°08′59.7″S, 113°53′14.7″E) GoogleMaps .
Material examined
Holotype WAM S67369 View Materials . Paratypes WAM S67370, S67371 View Materials .
Etymology
Refers to Mandu Mandu Gorge.
Description
Holotype: shell 7.4 mm wide, 3.3 mm high, H / D ratio 0.45, with 3.5 whorls. Based on ten measured adults, shell small, adult diameter 6.8–7.6 mm (mean 7.19 mm, SD 0.26 mm), with 3.33–3.63 (mean 3.5) whorls. Apex and spire evenly elevated, shell height 3.0– 3.5 mm (mean 3.23, SD 0.13 mm), H / D ratio 0.407 –0.479 (mean 0.449, SD 0.020). Body whorl rounded, without trace of angulation. Protoconch densely pustulose. Early spire with prominent pustules but only weak axial ridges. Lower spire and body whorl with faint, deeply pustulose diagonal ridges above periphery, ridges becoming even less prominent on shell base. Umbilicus wide, regularly decoiling, slightly narrowed by columellar lip, width 1.5–1.9 mm (mean 1.67 mm, SD 0.15 mm). Body whorl descending sharply behind aperture. Palatal and basal lips sharply reflected and broadly expanded, and columellar lip wide, parietal lip free of wall and strongly elevated. Basal lip without knob on top of lip. Shell colour white on top of ridges, reddish to purplish brown in interstices.
Comparative remarks
Strepsitaurus manduensis View in CoL sp. nov. is similar to S. milyeringus View in CoL and S. susieae View in CoL sp. nov., with these three species differing from S. ningaloo View in CoL , S. rugus View in CoL , and S. williami View in CoL by their smaller size, lower whorl count, lips distinctly detached from the body whorl, and lack of setae on the shell. They also lack the prominent knob on the basal lip, which characterizes S. williami ( Solem, 1997) View in CoL . Strepsitarus manduensis sp. nov. is distinguished largely from S. milyeringus View in CoL and completely from S. susieae View in CoL sp. nov. by its relatively low spire [mean H / D 0.449 (0.407 –0.479), compared with 0.484 (0.443 – 0.548) and 0.575 (0.544 –0.597)], and its less developed ridges.
Distribution
This species is known only from Mandu Mandu Gorge, on the western side of Cape Range, where it was found on vertical rock faces on the north side of the gorge, at two sites 560 m apart. It was not found above the gorge, where the larger S. ningaloo occurs.
WAM |
Western Australian Museum |
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.
Kingdom |
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Phylum |
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Class |
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Order |
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Family |
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Genus |
Strepsitaurus manduensis
Taylor, James P. A., Johnson, Michael S. & Stankowski, Sean 2015 |
Strepsitaurus manduensis
Taylor & Johnson & Stankowski 2015 |
S. susieae
Taylor & Johnson & Stankowski 2015 |
Strepsitarus manduensis
Taylor & Johnson & Stankowski 2015 |
S. susieae
Taylor & Johnson & Stankowski 2015 |
S. milyeringus
Solem 1997 |
S. williami
Solem 1997 |
S. milyeringus
Solem 1997 |