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Sousa chinensis (Chinese white dolphin)
Taxonomy
Delphinus chinensis was named by Osbeck (1765) [No type specimen. Original description based on live animals (Hershkovitz, 1966).]. It is extant. Its type specimen is none designated (Hershkovitz, 1966). Its type locality is Bahia Rio de Janeiro, which is in a Holocene coastal horizon in Brazil.
It was replaced with Delphinus sinensis by Desmarest (1822); it was recombined as Steno chinensis by Gray (1871); it was recombined as Sotalia chinensis by Hershkovitz (1961), Scheffer and Rice (1963) and Hershkovitz (1966); it was recombined as Sousa chinensis by Lal Mohan (1988), Rice (1998), Jefferson and Karczmarski (2001), Jefferson and Van Waerebeek (2004), Mead and Brownell (2005), Agnarsson and May-Collado (2008), Perrin et al. (2013), Jefferson and Rosenbaum (2014) and Jefferson (2021).
It was replaced with Delphinus sinensis by Desmarest (1822); it was recombined as Steno chinensis by Gray (1871); it was recombined as Sotalia chinensis by Hershkovitz (1961), Scheffer and Rice (1963) and Hershkovitz (1966); it was recombined as Sousa chinensis by Lal Mohan (1988), Rice (1998), Jefferson and Karczmarski (2001), Jefferson and Van Waerebeek (2004), Mead and Brownell (2005), Agnarsson and May-Collado (2008), Perrin et al. (2013), Jefferson and Rosenbaum (2014) and Jefferson (2021).
Synonyms
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Synonymy list
Year | Name and author |
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1765 | Delphinus chinensis Osbeck |
1822 | Delphinus sinensis Desmarest p. 514 |
1870 | Sotalia sinensis Flower p. 151 |
1871 | Steno chinensis Gray p. 65 |
1883 | Sotalia sinensis Lydekker p. 513 |
1898 | Sotalia sinensis Trouessart p. 1026 |
1901 | Sotalia borneensis Lydekker p. 88 figs. Plate 8, Fig. 11 |
1904 | Sotalia borneensis Trouessart p. 763 |
1904 | Sotalia sinensis Trouessart p. 763 |
1934 | Sousa lentiginosa Iredale and Troughton p. 68 |
1960 | Sousa borneensis Fraser and Purves p. 7 |
1961 | Sotalia chinensis Hershkovitz p. 553 |
1963 | Sotalia borneensis Scheffer and Rice p. 7 |
1963 | Sotalia chinensis Scheffer and Rice p. 7 |
1966 | Sotalia chinensis Hershkovitz p. 22 |
1966 | Sotalia borneensis Hershkovitz p. 23 |
1988 | Sousa chinensis Lal Mohan p. 94 |
1998 | Sousa chinensis Rice p. 103 |
1999 | Sousa huangi Wang Peilie |
2001 | Sousa chinensis Jefferson and Karczmarski p. 1 |
2004 | Sousa chinensis Jefferson and Van Waerebeek p. 16 |
2005 | Sousa chinensis Mead and Brownell p. 732 |
2008 | Sousa chinensis Agnarsson and May-Collado p. 981 figs. FIg. 2 |
2012 | Delphinus chinensis Hassanin et al. p. 43 figs. Fig. 1 |
2013 | Sousa chinensis Perrin et al. p. 571 figs. Table 1 |
2014 | Sousa chinensis Jefferson and Rosenbaum |
2021 | Sousa chinensis Jefferson p. 24 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Sousa chinensis Osbeck 1765 [Chinese white dolphin]
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Invalid names: Delphinus sinensis Desmarest 1822 [synonym], Sotalia borneensis Lydekker 1901 [synonym], Sousa huangi Wang Peilie 1999 [synonym], Sousa lentiginosa Iredale and Troughton 1934 [synonym]
Diagnosis
Reference | Diagnosis | |
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T. A. Jefferson and H. C. Rosenbaum 2014 | Sousa chinensis reaches a known maximum total length of 270 cm (Fig. 5). The species is characterized by the absence of a dorsal hump, and a low, wide- based (ranging from 15%–21% of body length; Zhou et al. 1980; TAJ, unpub- lished), triangular to slightly-falcate dorsal fin (Fig. 12; Jefferson and Karcmarski 2001). There are 50–53 total vertebrae, and the typical vertebral formula is C7, Th12–14, L9–11, Ca21–24. The rostum is relatively short (to 339 mm). The length/breadth ratio of the cranium is 2.2–2.6. Tooth counts are between those of other Sousa species (32–38 per tooth row). Adults are mostly white, but with some dark spotting and/or gray patches in some populations (there is no cape pattern). There are no shared mtDNA haplotypes with other species, and three diagnostic mtDNA characters that distinguish Sousa plumbea from other Sousa species. A sin- gle nuDNA character diagnoses S. chinensis from all other Sousa (Table 2). |