Rhombuniopsis fultoni Moskvicheva & Starobogatov, 1973

Xiang, Hong Quan, He, Yue Ming, Zhang, Le Jia, Gao, Han, Guo, Liang, Lu, Yi Zhi, Fan, Shu Yun & Chen, Hui, 2024, A revision of Rhombuniopsis Haas, 1920 (Unionida, Unionidae) endemic to the ancient lakes of Yunnan, China, with descriptions of two new species, Zootaxa 5481 (2), pp. 273-289 : 278-280

publication ID

https://doi.org/ 10.11646/zootaxa.5481.2.6

publication LSID

lsid:zoobank.org:pub:80194D39-74AD-4C40-AAAC-C2F52D4FF179

DOI

https://doi.org/10.5281/zenodo.12749762

persistent identifier

https://treatment.plazi.org/id/03F57E77-FF98-DE7A-FF32-4C166F5EFE91

treatment provided by

Plazi

scientific name

Rhombuniopsis fultoni Moskvicheva & Starobogatov, 1973
status

 

Rhombuniopsis fultoni Moskvicheva & Starobogatov, 1973 View in CoL

Fig. 5A–D View FIGURE 5

Rhombuniopsis fultoni Moskvicheva & Starobogatov (1973): 24 View in CoL , fig. 2 [‘ Yunnan fu’=Kunming, Yunnan Province, China]; Graf & Cummings (2007): 304; He & Zhuang (2013): 102, Figs 239–240; Zieritz et al. (2018): 29 –44; Graf & Cummings (2021): 15; Liu et al. (2022): 1 –37.

Material examined. Newly collected material. Adult shell: Lake Lulianghai , Zhongshu Town (中NJDz), 25.028233°N, 103.689557°E, 2022.1. ( KIZ1904201 View Materials KIZ1904210 View Materials ), collected by Hong Quan Xiang and Yue Ming He; GoogleMaps Lake Dianchi, Haikou (DZ口), 24.782123°N, 102.610330°E, 2022.1. ( KIZ1904211 View Materials ), collected by Yi Feng Liu; GoogleMaps Lake Dianchi, Haikou (DZ口), 24.78012°N, 102.62258°E, 2023.5. ( KIZ1904212 View Materials KIZ1904217 View Materials ), collected by Hong Quan Xiang. GoogleMaps

Diagnosis. Shell rounded or nearly rounded, dark brown to black, ventral margin rounded, umbo with wavy wrinkles.

Description. Shell length 20–25 mm. Shell small, inflated, solid, symmetrical, rounded or nearly rounded. Anterior and posterior margins oval, ventral margin rounded; the umbo sometimes sculptured with wavy wrinkles, often eroded. Ligament short; growth lines arranged in concentric circles; dorsal outline arched smoothly. Periostracum shining black or greenish-yellow, smooth; left valve with two pseudocardinal teeth, anterior tooth rather thin, posterior tooth thick; anterior pseudocardinal tooth of the right valve well developed, spherical, posterior tooth sometimes connected to lateral teeth; nacre white.

Comparison. This species can be differentiated from the most similar species R. linan sp. nov. by having a rounder shell with relatively smaller pseudocardinal teeth and fewer wavy wrinkles near the umbo.

Taxonomic remarks. According to Moskvicheva and Starobogatov (1973), Rhombuniopsis fultoni was described based on shells collected from Yunnan (type locality: Kunming, China). He and Zhuang (2013) provided specimen images from Lake Dianchi in Kunming. Based on comparative descriptions, we believe they represent the same species. Huang & Zhang (1990) described a new species found in Dianchi, Unionea ovatiquadreta ( Huang & Zhang, 1990) . However, after searching for Huang & Zhang’s information from the relevant years, we could not find any images of that species. Other references citing this species also did not provide any relevant literature. We consider this species to be invalid. Therefore, we can only speculate that it is R. fultoni based on the shape described in its name and its place of origin. In addition, Huang & Zhang (1990) recorded ‘ Unionea fagana ’ from Dianchi. According to our research, this name should actually be a misspelling of Unionetta fabagina ( Deshayes & Jullien, 1876) . Based on our field investigations in Dianchi, we believe that Huang & Zhang’s identification was wrong, and this species should actually be R. fultoni .

Habitat and distribution. Lives on muddy to sandy substrates, mostly found near rivers leading to lakes, always at depths of 0–3 m in Lake Dianchi, Lulianghai and lakes near Qujing City.

Kingdom

Animalia

Phylum

Mollusca

Class

Bivalvia

Order

Unionida

Family

Unionidae

Genus

Rhombuniopsis

Loc

Rhombuniopsis fultoni Moskvicheva & Starobogatov, 1973

Xiang, Hong Quan, He, Yue Ming, Zhang, Le Jia, Gao, Han, Guo, Liang, Lu, Yi Zhi, Fan, Shu Yun & Chen, Hui 2024
2024
Loc

Rhombuniopsis fultoni

Liu, X. & Liu, Y. & Wu, R. & Zanatta, D. T. & Lopes-Lima, M. & Goncalves, D. V. & Bogan, A. E. & Ouyang, S. & Wu, X. P. 2022: 1
Graf, D. L. & Cummings, K. S. 2021: 15
Zieritz, A. & Bogan, A. E. & Froufe, E. & Klishko, O. & Kondo, T. & Kovitvadhi, U. & Kovitvadhi, S. & Lee, J. H. & Lopes-Lima, M. & Pfeiffer, J. M. & Sousa, R. & Do, T. V. & Vikhrev, I. & Zanatta, T. D. 2018: 29
He, J. & Zhuang, Z. M. 2013: 102
Graf, D. L. & Cummings, K. S. 2007: 304
Moskvicheva, I. M. & Starobogatov, Ya. I. 1973: 24
1973
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