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Several new species of oviparous skates of the genus  Bathyraja  have been identified over the past 2 decades, yet it is possible that a complete understanding of species diversity among this group has not been achieved. We used genetics and morphology to screen for the presence of species-level differentiation among embryos from nursery areas in the eastern Bering Sea that were initially identified as the Alaska skate  B. parmifera . A sample of 57 embryos from Pervenets Canyon differed significantly at single nucleotide polymorphism loci from 297 other  B. parmifera  samples, and differences were on the order of those observed between  B. parmifera  and the leopard skate  B. panthera . This sample of embryos was similar to  B. parmifera  at the cytochrome  c  oxidase subunit I (COI) mitochondrial locus. We discuss whether this group of embryos may represent an undescribed cryptic species. Although morphological description of adults is required for a complete species description, only embryo samples were available. Even so, results presented here are a step toward understanding, managing, and conserving the diversity of skate species in the North Pacific Ocean.

Genetic evidence from embryos suggests a new species of skate related to Bathyraja parmifera (Rajiformes: Arhynchobatidae) in the Bering Sea