Deux nouvelles publications sur les raies pastenagues à points bleus à découvrir dans le Chinese journal of Oceanology and Limnology et dans Species.

La génétique a permis d'identigier cinq nouvelles especes de raies pastenagues a points bleus (anciennement Neotrygon kuhlii). Trois d'entre elles (N. bobwardi, N. malaccensis et N. moluccensis) habitent les mers indonesiennes. Une autre (N. westpapuensis) est presente en Papouasie Occidentale. La cinquieme (N. vali) est presente dans l'archipel des Salomon.

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Borsa P, Arlyza IS, Hoareau TB, Shen K-N (2017) Diagnostic description and geographic distribution of four new cryptic species of the blue-spotted maskray species complex (Myliobatoidei: Dasyatidae; Neotrygon spp.) based
on DNA sequences. Chinese Journal of Oceanology and Limnology, doi.org/10.1007/s00343-018-7056-2

Abstract - Nine morphologically similar but genetically distinct lineages in the blue-spotted maskray species complex, previously Neotrygon kuhlii (Müller and Henle) qualify as cryptic species. Four of these lineages have been previously described as Neotrygon australiae Last, White and Séret, Neotrygon caeruleopunctata Last, White and Séret, Neotrygon orientale Last, White and Séret, and Neotrygon varidens (Garman), but the morphological characters used in the descriptions offered poor diagnoses and their geographic distributions were not delineated precisely. The objective of the present work is to complete the description of the cryptic species in the complex. Here, an additional four lineages are described as new species on the basis of their mitochondrial DNA sequences: Neotrygon bobwardi, whose distribution extends from the northern tip of Aceh to the western coast of Sumatera; Neotrygon malaccensis, sampled from the eastern part of the Andaman Sea and from the Malacca Strait; Neotrygon moluccensis, from the eastern half of the Banda Sea; and Neotrygon westpapuensis from the central portion of northern West Papua. The geographic distributions of N. australiae, N. coeruleopunctata, N. orientale, and N. varidens are updated. For each species, a diagnosis is provided in the form of a combination of private or partly-private nucleotides at 2–4 nucleotide sites along a 519-base pair fragment of the CO1 gene. We believe that the present taxonomic revision will provide information relevant to the sound management and conservation of cryptic species of the blue-spotted maskray in the Coral Triangle region.

Keywords: molecular taxonomy; diagnosis; distribution

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Borsa P (2017) Neotrygon vali, a new species of the blue-spotted maskray complex (Myliobatoidei: Dasyatidae). Species 18, 146-153.

ABSTRACT - The blue-spotted maskray from Guadalcanal Island (Solomon archipelago) is distinct by its colour patterns from Neotrygon kuhlii with which it was previously confused, and belongs to a genetic lineage clearly separate from all other known species in the genus Neotrygon. It is here described as a new species, Neotrygon vali sp. nov., on the basis of its nucleotide sequence at the cytochrome oxidase 1 (CO1) gene locus. It is diagnosed from all other known species in the genus Neotrygon by the possession of nucleotide T at nucleotide site 420 and nucleotide G at nucleotide site 522 of the CO1 gene.

Key words: new species, CO1 gene, molecular diagnosis, taxonomy

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