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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

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 En: Journal of Natural History volumen 53, número 9-10 (March 2019), páginas 517-540Resumen: 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 bothspecies 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 keyto all species of Treadwellphysa is also given.
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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 bothspecies 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 keyto all species of Treadwellphysa is also given. Inglés

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