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A new species of the genus Pseudocrangonyx (Crustacea: Amphipoda: Pseudocrangonyctidae) from subterranean waters of Japan

Shintani, Aki ; Umemura, Shinya ; Nakano, Takafumi ; Tomikawa, K O

Zootaxa, 2023-06, Vol.5301 (3), p.383-396 [Periódico revisado por pares]

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Título:
A new species of the genus Pseudocrangonyx (Crustacea: Amphipoda: Pseudocrangonyctidae) from subterranean waters of Japan
Autor: Shintani, Aki ; Umemura, Shinya ; Nakano, Takafumi ; Tomikawa, K O
Assuntos: Antennae ; Aquatic crustaceans ; Congeners ; Gills ; New species ; Phylogenetics ; Phylogeny ; Pseudocrangonyx ; Quarries ; Subsurface water ; Telson
É parte de: Zootaxa, 2023-06, Vol.5301 (3), p.383-396
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Descrição: A new species of pseudocrangonyctid amphipod, Pseudocrangonyx asuwaensis, is described from subterranean water in a quarry on Mt. Asuwa "Nanatsuo-guchi", Fukui Prefecture, Japan. Pseudocrangonyx asuwaensis sp. nov. differs from its congeners in various morphological features, such as head without eyes, relative length of antennae 1, female antenna 2 without calceoli, length ratio of mandibular palp articles, setal numbers on maxillae 1 and 2 inner plates, absence of sternal gills, armature of urosomite 1, and shape of telson. Molecular phylogenetic analyses suggest that P. asuwaensis sp. nov. is clustered with P. komaii Tomikawa & Nakano, 2018, Pseudocrangonyx sp. 7 and Pseudocrangonyx sp. 8, and was the first of these species to diverge.
Editor: New Zealand: Magnolia Press
Idioma: Inglês

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