Paraprososthenia yunjian Xiang, He, Lv & Chen, 2025
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publication ID |
https://doi.org/10.37828/em.2025.84.6 |
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publication LSID |
lsid:zoobank.org:pub:FCB98FB1-F97C-45AB-BFDF-E107D846C44D |
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DOI |
https://doi.org/10.5281/zenodo.16960760 |
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persistent identifier |
https://treatment.plazi.org/id/042F8A2D-2106-FFB5-A6AF-FD95FD8C8F25 |
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treatment provided by |
Felipe |
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scientific name |
Paraprososthenia yunjian Xiang, He, Lv & Chen |
| status |
sp. nov. |
Paraprososthenia yunjian Xiang, He, Lv & Chen View in CoL , sp. nov.
https://zoobank.org/ urn:lsid:zoobank.org:act:CDEF35B6-5F9C-4EF8-9419-F76445485069
Fig. 2 E View Figure 2 , Fig. 3 View Figure 3 K-M
Material examined. Holotype: XHQ 24010501, shell height 22.0 mm. Zhongshu Town , Luliang County, Qujing City, Yunnan Province, China, 25.02°N, 103.66°E, June 2021, collected by Yue-Ming He and Hong-Quan Xiang ( Fig. 1 View Figure 1 ). GoogleMaps
Paratypes: 2 specimens, XHQ 24010502-03, shell height 20.0-25.0 mm, June 2023, locality and habitat same as holotype.
Diagnosis. Shell small, elongate conic, white, with eleven to thirteen whorls, the whorls with very obvious keels on the shoulders, aperture ovate, inner lip thickened.
Description. Shell small, but solid, elongate conic, white, with eleven to thirteen whorls, including two protoconch whorls, teleoconch whorl inflated; third to fifth whorls with very week keels on the shoulders; other whorls with very obvious keels on the shoulders; body whorls not swollen. Apex obtuse. Shell surface with fine growth lines, the whorls with very obvious keels on the shoulders. Umbilicus narrow and small, base with one keel around umbilical area. Aperture ovate, inner lip thickened and smooth, outer lip thickened.
Differential diagnosis. Compared with P. costata and P. constricta , Paraprososthenia yunjian sp. nov. shell surface lacks nodules and with very obvious keels on the shoulders. Compared to P. gredleri , the shell of Paraprososthenia yunjian sp. nov. is larger, with more whorls, and more pronounced keels. Compared with P. jinxi sp. nov., P. bronyaae sp. nov. and P. bicarinata sp. nov., Paraprososthenia yunjian sp. nov. with only one keels on the shoulders.
Etymology. The species name " yunjian " derives from a Chinese term describing the morphological features of a cloud, typically referring to the upper edge or appearance of a cloud, especially those parts that extend outward resembling shoulders. Here, it is used to describe the keel structures of this species. We suggest the Chinese common name as " 云ẽ川ϐ ".
Distribution and ecology. This species is only found in the lake sediments of Lake Lulianghai in Luliang, Yunnan Province.
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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