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Euborlasia Vaillant, 1890 (Nemertea: Pilidiophora) from Bocas del Toro: description of a new species, with comments on the systematics of the genus

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Abstract

Members of the lineid heteronemertean genus Euborlasia Vaillant, 1890 are relatively large-bodied ribbon worms, often with mottled, dark coloration. We describe Euborlasia maycoli sp. nov. from Bocas del Toro, Panama, which represents the 11th member, as well as the first Caribbean representative of the genus. We infer the phylogenetic position of the new species among the family Lineidae based on phylogenetic analyses using partial sequences of the mitochondrial 16S rRNA and cytochrome c oxidase subunit I, the nuclear 18S and 28S rRNA, and histone H3 genes. The resulting phylogenetic tree suggests that Euborlasia is likely related closely to Corsoua Corrêa, 1963.

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Acknowledgments

We thank Dr. Maycol E. Madrid at the Smithsonian Tropical Research Institute for helping NH to obtain permissions for collection and exportation of samples from Bocas del Toro. NH is grateful to Dr. Rachel Collin and staffs of the Smithsonian Tropical Research at Bocas del Toro, Panama. We thank Dr. Alejandro Martínez and three anonymous reviewers for giving us opportunity to improve our manuscript.

Funding

This study was partially supported by Japan Society for Promotion of Science, Grant-in-Aid for Scientific Research (C) (Grant Number 17K07520) for KH.

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Author notes

  1. Natsumi Hookabe

    Present address: Misaki Marine Biological Station, The University of Tokyo, Miura, Kanagawa, 238-0225, Japan

Authors and Affiliations

  1. Graduate School of Science, Hokkaido University, Sapporo, Hokkaido, 060-0180, Japan

    Natsumi Hookabe

  2. Faculty of Science, Hokkaido University, N10W8 Kita-ku, Sapporo, Hokkaido, 060-0180, Japan

    Hiroshi Kajihara

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  1. Natsumi Hookabe
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  2. Hiroshi Kajihara
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NH and HK designed the present study and drafted the manuscript. NH conducted the morphological observation and phylogenetic analyses. Both the authors read and approved the final manuscript.

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Correspondence to Natsumi Hookabe.

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All applicable international, national, and/or institutional guidelines for the care and use of animals were followed by the authors.

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All necessary permits for sampling and observational field studies have been obtained by the authors from the competent authorities and are mentioned in the acknowledgments, if applicable.

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Communicated by A. Martínez García

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Hookabe, N., Kajihara, H. Euborlasia Vaillant, 1890 (Nemertea: Pilidiophora) from Bocas del Toro: description of a new species, with comments on the systematics of the genus. Mar. Biodivers. 50, 74 (2020). https://doi.org/10.1007/s12526-020-01091-7

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