New genera and species of Urothoidae (Amphipoda) from the Brazilian deep sea, with the re-assignment of Pseudurothoe and Urothopsis to Phoxocephalopsidae

Abstract

Box-corer samples taken between 700 and 2000 m depth on the slope of the Campos Basin, southeastern Brazilian deep sea, provided the material for the description of two new genera in the family Urothoidae, Carangolioides gen. nov. and Coronaurothoe gen. nov., and three new species: Carangolioides castellatus sp. nov., Carangolioides hamatus sp. nov. and Coronaurothoe rotunda sp. nov. Carangolioides gen. nov. differs from other urothoid genera by the presence of a distolateral projection on the outer lobes of the lower lip and the distally truncated margin of the upper lip, while Coronaurothoe gen. nov. differs by the mandibular molar being triturative with a distal crown of stout setae. In this study, we provide detailed descriptions and illustrations of the new taxa. An identification key to genera of Urothoidae is also provided. The genera Pseudurothoe Ledoyer, 1986 and Urothopsis Ledoyer, 1967 are removed in this paper from Urothoidae to Phoxocephalopsidae.

http://zoobank.org/urn:lsid:zoobank.org:pub:18863639-4F10-4E25-9C62-8B1047538046

Keywords:

• Urothoidae
• Phoxocephalopsidae
• Carangolioides gen. nov.
• Coronaurothoe gen. nov.
• Brazil

Acknowledgements

The authors are grateful to Centro de Pesquisas – Petróleo Brasileiro S/A (CENPES-PETROBRAS) for providing the material.

Additional information

Funding

This study was partially funded by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), and Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ).