New findings and two new species of the genus Pallenopsis (Pycnogonida: Pallenopsidae) from the Southern Ocean

Esperanza  Cano-Sánchez; Pablo J.  López-González

doi:10.3989/scimar.05423.091

Autores/as

Esperanza Cano-Sánchez Biodiversidad y Ecología Acuática, Departamento de Zoología, Facultad de Biología, Universidad de Sevilla https://orcid.org/0000-0002-8097-1872
Pablo J. López-González Biodiversidad y Ecología Acuática, Departamento de Zoología, Facultad de Biología, Universidad de Sevilla https://orcid.org/0000-0002-7348-6270

DOI:

https://doi.org/10.3989/scimar.05423.091

Palabras clave:

Antártida, picnogónidos, araña marina, Subantártida, análisis morfométrico, taxonomía

Resumen

En este trabajo se estudian el material de picnogónidos del género Pallenopsis recolectados durante la campaña antártica Polarstern XXIII/8 (23 de noviembre de 2006 al 30 de enero de 2007). En esta colección se reconocen siete especies, dos de ellas se proponen como nuevas: Pallenopsis tubercula n. sp., P. elephantensis n. sp., P. gracilis Cano-Sánchez y López-González, 2019, P. hodgsoni Gordon, 1938, P. macronyx Bouvier, 1911, P. spicata Hodgson, 1914 y P. aff. vanhoeffeni Hodgson, 1915. Pallenopsis gracilis es citada por primera vez desde su descripción original. Las especies nuevas se describen, ilustran y comparan con sus congéneres más cercanos, discutiendo la variabilidad morfológica. Se realiza un análisis cluster (distancia euclidiana) basado en 24 caracteres morfológicos, que incluye nuestros ejemplares de Pallenopsis y el holotipo de P. gracilis. Finalmente, se presenta una clave actualizada de las especies del Océano Austral.

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Citas

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