Description of a new species of Hobbsinella (Crustacea, Bathynellacea, Bathynellidae) from Colorado (USA) based on morphological and molecular characters

  • Ana Isabel Camacho Museo Nacional de Ciencias Naturales (CSIC), Dpto. Biodiversidad y Biología Evolutiva, C/ José Gutiérrez Abascal 2. 28006 Madrid, Spain https://orcid.org/0000-0003-0596-7678
  • Paloma Mas-Peinado Museo Nacional de Ciencias Naturales (CSIC), Dpto. Biodiversidad y Biología Evolutiva, C/ José Gutiérrez Abascal 2. 28006 Madrid, Spain https://orcid.org/0000-0002-9290-5805
  • Carly B. Bonwell Colorado College, 14 E W Cache La Poudre St, Colorado Springs, CO 80903, USA
  • Jenna N. Mcdonald Colorado College, 14 E W Cache La Poudre St, Colorado Springs, CO 80903, USA
  • Beatriz A. Dorda Museo Nacional de Ciencias Naturales (CSIC). Dpto. Colecciones, Colección de Tejidos y ADN, C/ José Gutiérrez Abascal 2. 28006 Madrid, Spain https://orcid.org/0000-0002-2741-1841
  • Isabel Rey Museo Nacional de Ciencias Naturales (CSIC). Dpto. Colecciones, Colección de Tejidos y ADN, C/ José Gutiérrez Abascal 2. 28006 Madrid, Spain https://orcid.org/0000-0002-2122-5124
  • Steven J. Taylor Colorado College, 14 E W Cache La Poudre St, Colorado Springs, CO 80903, USA https://orcid.org/0000-0002-3020-5205
Keywords: Bathynellacea, Bathynellidae, Colorado, groundwater fauna, new species, morphological data, COI, 18S

Abstract

A new species of Bathynellidae is described from Colorado (USA). Hobbsinella gunnisonensis Camacho & Taylor sp. nov. displays a unique combination of morphological characters including seven-segmented antenna lacking medial seta on exopod, antennule slightly longer than antenna, three-segmented mandibular palp, four articles on endopod of thoracopods I to VII and five spines on sympod and three spines on endopod of the uropods. Partial sequences of cytochrome oxidase I (COI) and 18S have been obtained from several specimens of the new species. The mitocondrial and nuclear DNA data complement the traditional morphological taxonomic description support the validity of the new species. Molecular data for the Bathynellidae demonstrate the presence of two highly divergent genetic units, with the new species placed in the genus Hobbsinella. With the description of Hobbsinella gunnisonensis Camacho & Taylor sp. nov. and its molecular characterization, we discovered an interesting distribution of the genus, which occurs in both sides of the Continental Divide (Texas and Colorado) and different habitats.

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Published
2023-09-18
How to Cite
Camacho, A. I., Mas-Peinado, P., Bonwell, C. B., Mcdonald, J. N., Dorda, B. A., Rey, I., & Taylor, S. J. (2023). Description of a new species of Hobbsinella (Crustacea, Bathynellacea, Bathynellidae) from Colorado (USA) based on morphological and molecular characters. European Journal of Taxonomy, 891(1), 87–109. https://doi.org/10.5852/ejt.2023.891.2273
Section
Research article