In:
Zoosystematics and Evolution, Pensoft Publishers, Vol. 100, No. 3 ( 2024-07-09), p. 941-963
Abstract:
Two new species, Beaufortia granulopinna and Beaufortia viridis , are described from the upper Pearl River system in southwest China. Both species share the characteristics of the Beaufortia pingi species group, including prominent vertical stripes on the lateral body and pinnate-type lower lips, distinguishing them from other Beaufortia species. Beaufortia granulopinna is differentiated from other species in the group by possessing a unique set of characteristics: the presence of well-developed prominent tubercles on the first 6–9 pectoral fin rays in adults; and a significant proportion (54.76%) of individuals experiencing blurriness or absence of vertical stripes in the mid-section of the lateral body upon reaching adulthood. The minimum interspecific genetic distance within the genus based on mitochondrial cyt b gene sequences is 10.80%. Beaufortia viridis is distinguished from other species in the group by consistently exhibiting vertical stripes of uniform length, width, and spacing across all stages of growth; the absence of tubercles on the branched rays of pectoral fins; and a body coloration of dark cyan to green. The minimum interspecific genetic distance within the genus based on mitochondrial cyt b gene sequences is 4.60%. Molecular phylogenetic results confirm that the Beaufortia pingi species group forms a monophyletic clade, which is congruent with morphological classification findings. This study also addresses and resolves the taxonomic ambiguity surrounding Beaufortia pingi and Beaufortia zebroida , providing a redescription of these taxa.
Type of Medium:
Online Resource
ISSN:
1860-0743
,
1435-1935
DOI:
10.3897/zse.100.124370
DOI:
10.3897/zse.100.124370.figure1
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DOI:
10.3897/zse.100.124370.figure9
Language:
Unknown
Publisher:
Pensoft Publishers
Publication Date:
2024
detail.hit.zdb_id:
2420116-9
detail.hit.zdb_id:
1430702-9
SSG:
12
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