Lysmata arvoredensis nov. sp. a new species of shrimp from the south coast of Brazil with a key to species of Lysmata (Caridea: Lysmatidae) recorded in the southwestern Atlantic

Bruno W Giraldes; Thais P Macedo; Manoela C Brandão; J Antonio Baeza; Andrea S Freire

doi:10.7717/peerj.5561

Lysmata arvoredensis nov. sp. a new species of shrimp from the south coast of Brazil with a key to species of Lysmata (Caridea: Lysmatidae) recorded in the southwestern Atlantic

PeerJ. 2018 Sep 5:6:e5561. doi: 10.7717/peerj.5561. eCollection 2018.

Authors

Bruno W Giraldes¹, Thais P Macedo², Manoela C Brandão^{2

3}, J Antonio Baeza^{4

5

6}, Andrea S Freire²

Affiliations

¹ Environmental Science Centre, Qatar University, Doha, Qatar.
² Laboratório de Crustáceos e Plâncton, Departamento de Ecologia e Zoologia, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil.
³ Observatoire Océanologique de Villefranche-sur-Mer, Villefranche-sur-Mer, France.
⁴ Department of Biological Sciences, Clemson University, Clemson, SC, USA.
⁵ Smithsonian Marine Station at Fort Pierce, Fort Pierce, FL, USA.
⁶ Departamento de Biología Marina, Facultad de Ciencias del Mar, Universidad Católica del Norte, Coquimbo, Chile.

Abstract

Lysmata arvoredensis sp. nov. inhabits temperate waters in the south coast of Brazil and is named in tribute to the Marine Protected Area REBIO Arvoredo. This is the fourth species belonging to the genus Lysmata recorded for the region and the ninth for Brazil. L. arvoredensis sp. nov. can be distinguished from other species of Lysmata by the presence of a nearly completely fused accessory branch with a single free unguiform segment on the outer antennular flagellum; a rostrum with seven dorsal (2+5) and three ventral teeth; a stylocerite with a pointed tip bearing mesial setae; a second pereiopod with 22-24 carpal subsegments and 14-16 subsegments in the merus; a merus of the third pereiopod with five ventrolateral and 12 ventral spines on the propodus; and its color pattern, with red bands and patches in pleonites 2-3 that resemble a mask in dorsal view. Molecular characters demonstrate that L. arvoredensis sp. nov. is most closely related to other species of Lysmata belonging to the Neotropical and Cleaner clades. To support future ecological studies in the region, identification keys to the species of Lysmata recorded in the southwestern Atlantic Ocean are provided.

Keywords: Decapod; Maare project; Marine biodiversity; Peppermint shrimp; Phylogeny and taxonomy; REBIO do Arvoredo; Santa Catarina.

Grants and funding

This work was supported by Project MAArE (Monitoramento Ambiental do Arvoredo e Entorno) and funded by the Brazilian oil company PETROBRAS. This work was also supported by the grant from the National Counsel of Technological and Scientific Development—CNPq (312644/2013-2, 311994/2016-4) to Andrea S. Freire. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.