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A redescription of Acanthonyx Petiverii H. Milne Edwards, 1834, and designation of a neotype for Acanthonyx Simplex Dana, 1852 (Brachyura, Majidae)

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[The identity of the problematic spider crab species, Acanthonyx simplex Dana, 1852, originally described from Hawaii and never reported since, is resolved. It is here shown to be identical to Acanthonyx petiverii H. Milne Edwards, 1834, a species that is widely distributed on both sides of the American continent. The supposed type locality of Acanthonyx simplex is almost certainly wrong.Acanthonyx petiverii, nevertheless, is a highly variable species and, as such, is redescribed in detail. To ensure a stable taxonomy for these species and the genus, a neotype for A. simplex is designated. La problemática identidad de la especie de cangrejo araña Acanthonyx simplex Dana, 1852, originalmente descrita para las costas de Hawai y nunca estudiada desde entonces, ha sido determinada. Aquí se demuestra que es idéntica a Acanthonyx petiverii Milne Edwards, 1834, especie que se distribuye en ambas costas del continente Americano. La supuesta localidad tipo de Acanthonyx simplex es, casi con certeza, un dato erróneo. Acanthonyx petiverii, no obstante, es una especie altamente variable morfológicamente y, en consecuencia, se redescribe en detalle. Para estabilizar la taxonomía, se designa un neotipo para la especie A. simplex., The identity of the problematic spider crab species, Acanthonyx simplex Dana, 1852, originally described from Hawaii and never reported since, is resolved. It is here shown to be identical to Acanthonyx petiverii H. Milne Edwards, 1834, a species that is widely distributed on both sides of the American continent. The supposed type locality of Acanthonyx simplex is almost certainly wrong.Acanthonyx petiverii, nevertheless, is a highly variable species and, as such, is redescribed in detail. To ensure a stable taxonomy for these species and the genus, a neotype for A. simplex is designated. La problemática identidad de la especie de cangrejo araña Acanthonyx simplex Dana, 1852, originalmente descrita para las costas de Hawai y nunca estudiada desde entonces, ha sido determinada. Aquí se demuestra que es idéntica a Acanthonyx petiverii Milne Edwards, 1834, especie que se distribuye en ambas costas del continente Americano. La supuesta localidad tipo de Acanthonyx simplex es, casi con certeza, un dato erróneo. Acanthonyx petiverii, no obstante, es una especie altamente variable morfológicamente y, en consecuencia, se redescribe en detalle. Para estabilizar la taxonomía, se designa un neotipo para la especie A. simplex.]

Affiliations: 1: Museo del Mar, Departamento de Ciencias del Mar, Universidad Arturo Prat, Casilla 121, Iquique, Chile; 2: Department of Biological Sciences, National University of Singapore, Kent Ridge, Singapore 119260, Republic of Singapore

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/content/journals/10.1163/156854007780765542
2007-05-01
2016-12-11

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