期刊
CRUSTACEANA
卷 96, 期 4, 页码 307-330出版社
BRILL
DOI: 10.1163/15685403-bja10283
关键词
Key words; Morphology; Acanthocyclops vernalis-robustus species complex; Neotropics
A new species of the Acanthocyclops genus is described from freshwater bodies in Southeast Mexico. This species, Acanthocyclops fiersi n. sp., is the third one described from the Neotropics. Comparative morphology and molecular methods supported its distinction from other species in the A. vernalis-robustus species-complex. The study also highlights the regional diversity of Acanthocyclops and the need for further research in the Neotropics, and includes an identification key for Acanthocyclops species in Mexico.
A new species of the genus Acanthocyclops is described from temporal freshwater bodies in the Sian Ka'an and Calakmul Biosphere Reserves in Southeast Mexico. Acanthocyclops fiersi n. sp. represents the third species of the genus described from the Neotropics, only after A. rebecae and A. smithae. Acanthocyclops fiersi n. sp., is recognized as a member of the A. vernalis-robustus species -complex, and its clear divergence with respect to its congeners was supported using comparative morphology and molecular methods. The mtCOI marker revealed a 0.54% K2P divergence within populations of A. fiersi n. sp. and 17.6-22.41% with respect to other members of the A. vernalis-robustus species-complex. Acanthocyclops fiersi n. sp. might be restricted to the Yucatan Peninsula. Comments about the likely underestimated regional diversity of Acanthocyclops and the need of further studies in the Neotropics are provided. An identification key to the species of Acanthocyclops distributed in Mexico is included.
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