Setaphyes algarvensis sp. nov., the first description of an allomalorhagid mud dragon (Kinorhyncha: Allomalorhagida) from Portugal (Eastern Atlantic Ocean)

  • Alberto González-Casarrubios Universidad Complutense de Madrid (UCM), Faculty of Biological Sciences, Department of Biodiversity, Ecology and Evolution, C/ José Antonio Novais 12, 28040 Madrid, Spain https://orcid.org/0000-0003-1975-6900
  • Diego Cepeda Universidad Complutense de Madrid (UCM), Faculty of Biological Sciences, Department of Biodiversity, Ecology and Evolution, C/ José Antonio Novais 12, 28040 Madrid, Spain https://orcid.org/0000-0002-5194-3346
  • Fernando Pardos Universidad Complutense de Madrid (UCM), Faculty of Biological Sciences, Department of Biodiversity, Ecology and Evolution, C/ José Antonio Novais 12, 28040 Madrid, Spain https://orcid.org/0000-0002-6292-9793
  • Ricardo C. Neves Department of Biology, August Krogh Building, University of Copenhagen, Copenhagen Ø, Denmark https://orcid.org/0000-0002-9219-9066
  • Nuria Sánchez Universidad Complutense de Madrid (UCM), Faculty of Biological Sciences, Department of Biodiversity, Ecology and Evolution, C/ José Antonio Novais 12, 28040 Madrid, Spain https://orcid.org/0000-0001-5163-4386
Keywords: Kinorhynch, Iberian Peninsula, taxonomy, diversity, Europe

Abstract

The kinorhynch fauna from Portugal has been explored, yielding a new species of the genus Setaphyes (Kinorhyncha: Allomalorhagida). This is the first description of an allomalorhagid species from Portugal. Specimens of the new species were collected at a subtidal muddy beach in Alvor, a village located in the southernmost region of Portugal. Setaphyes algarvensis sp. nov. may be distinguished from its congeners by a unique arrangement of the setae: paired paradorsal setae on segments 2–7 and 9, paradorsal seta on segment 8 unpaired, laterodorsal setae on segments 2–3 and 6–9 in males and 2–9 in females, paralateral setae on segment 1, lateroventral setae on segments 2–10 (two pairs on segment 5), ventrolateral setae on segment 1 in males and 1–3 in females, and ventromedial setae on segments 3–9 in males and 4–9 in females. The diagnostic features of Setaphyes algarvensis sp. nov. are discussed from a comparative perspective with the congener species. Additionally, morphometric analyses of selected features, namely the total trunk length and the relation between the total trunk length and the length of lateral terminal spines, turned out to be useful to distinguish between the new species and Setaphyes kielensis (its most similar congener).

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Published
2022-06-01
How to Cite
González-Casarrubios, A., Cepeda, D., Pardos, F., Neves, R. C., & Sánchez, N. (2022). Setaphyes algarvensis sp. nov., the first description of an allomalorhagid mud dragon (Kinorhyncha: Allomalorhagida) from Portugal (Eastern Atlantic Ocean). European Journal of Taxonomy, 821(1), 150-165. https://doi.org/10.5852/ejt.2022.821.1803
Section
Research article