Redescription of two species previously regarded as Marphysa de Quatrefages, 1865, with the description of new species of Treadwellphysa Molina-Acevedo and Carrera-Parra, 2017

ABSTRACT

Herein, two species described in Marphysa are transferred to the recently proposed genus Treadwellphysa. After a morphological analysis of the type and additional material, it was found that both species belong to Treadwellphysa, based on the shape of the ventral cirrus with a swollen base as a transverse welt and the shape of maxillae I and II of the maxillary apparatus. Also, two new species, T. rizzoae sp. nov. and T. villalobosi sp. nov., are formally described, with materials studied from Brazil and Costa Rica, respectively. A key to all species of Treadwellphysa is also given.

urn:lsid:zoobank.org:pub:693D9279-682F-44E1-B1D5-15A9A5029FB6

KEYWORDS:

• maxillary apparatus
• compound falcigers
• compound spinigers
• taxonomy
• morphology

Acknowledgements

I thank Emma Sherlock (BMNH); Leslie Harris and Kirk Fitzhugh (LACM-AHF); Alexandra E. Rizzo (Universidad do Estado do Rio de Janeiro); Erminda da Conceicao Guerreiro Couto (Laboratório de Ecologia Bentônica, Universidad Estadual de Santa Cruz, Ilhéus, Bahía); and Luis F. Carrera-Parra and Tulio F. Villalobos-Guerrero (ECOSUR) for making available some of the materials that made this study possible. I also thank Luis F. Carrera-Parra (ECOSUR) for suggesting essential comments to improve this manuscript and for his help in taking SEM photos. Thanks go to Humberto Baena-Basave (ECOSUR) for his advice on digital photography and photo editing.

Disclosure statement

No potential conflict of interest was reported by the author.

Additional information

Funding

During this research, I was supported by a scholarship from CONACYT [grant number 514117/298079].