A new species in the genus Acartia Dana, 1846 (Crustacea, Copepoda, Calanoida, Acartiidae) from the South Pacific coastal waters of Nadi Bay, Fiji

Seunghan Lee; Ho Young Soh; Wonchoel Lee

doi:10.3897/zookeys.893.38369

A new species in the genus Acartia Dana, 1846 (Crustacea, Copepoda, Calanoida, Acartiidae) from the South Pacific coastal waters of Nadi Bay, Fiji

Zookeys. 2019 Dec 2:893:69-89. doi: 10.3897/zookeys.893.38369. eCollection 2019.

Authors

Seunghan Lee¹, Ho Young Soh², Wonchoel Lee³

Affiliations

¹ Biodiversity Institute, Marine Act Co., Seoul 04790, Korea Biodiversity Institute Seoul South Korea.
² Department of Environmental Oceanography, Chonnam University, Yeosu 59616, Korea Chonnam University Yeosu South Korea.
³ Department of Life Science, Hanyang University, Seoul 04763, Korea Hanyang University Seoul South Korea.

Abstract

A new species in the genus Acartia, Acartia nadiensis sp. nov., is described from Fijian coastal waters. This species belongs to the subgenus Odontacartia based on the following morphological features: presence of a rostral filaments, a pointed process on the last prosomite, a serrated terminal spine on female P5, and the absence of a protrusion on the basis of the male right P5. This new species can be differentiated from its congeners by the combination of the absence of a spine on the first segment of the antennules, the short outer seta of female P5, and a medial spine on the exp-2 of the left male P5. Phylogenetic analyses using mitochondrial COI partial sequences show that the new species is distinct from its congeners.

Keywords: Odontacartia; South Pacific; mtCOI; planktonic copepod; taxonomy.

Seunghan Lee, Ho Young Soh, Wonchoel Lee.