The first report of Bathynellacea in the subterranean water of Mongolia: A new species of Altainella Camacho, 2020 (Crustacea, Bathynellidae)

초록

Background We report the first finding of Bathynellacea, discovered in Mongolia. We also report a new species of the genus Altainella Camacho, 2020, which was previously recorded only in the western edge of Russia. New information Altainella mongoliensis sp. nov. was found in the interstitial hyporheic region of the Onon River Basin, Mongolia, by inserting a core approximately 1.2 m deep and extracting the underground interstitial water. The new species exhibited sexual dimorphism in thoracopod VII, uniquely observed within the genus Alta/nella. . We provide a morphological description and remarks on the new species with molecular information based on the 18S rDNA and partial CO1 gene sequences. We emphasise the need for continued research on subterranean biodiversity in previously neglected regions by reporting the first discovery macro-stygobionts in Mongolia.

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