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Issue: Vol. 5627 No. 2: 28 Apr. 2025
Type: Article
Published: 2025-04-28
DOI: 10.11646/zootaxa.5627.2.8
Page range: 373-386
Abstract views: 81
PDF downloaded: 5

A new species of the rare genus Segonzackomaius Burukovsky, 2011 (Decapoda, Caridea, Nematocarcinidae) from the Northwest Pacific

Institute of Oceanology, Chinese Academy of Sciences, Qingdao, Shandong 266071, China. Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao, Shandong 266237, China. University of Chinese Academy of Sciences, Beijing 100049, China.
Institute of Marine Biology and Centre of Excellence for the Oceans, National Taiwan Ocean University, Keelung 20224, Taiwan, R.O.C.
Institute of Oceanology, Chinese Academy of Sciences, Qingdao, Shandong 266071, China. Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao, Shandong 266237, China. University of Chinese Academy of Sciences, Beijing 100049, China.
Segonzackomaius sursus sp. nov. shrimp taxonomy morphology molecular phylogenetic analyses deep-sea Crustacea

Abstract

A recently collected specimen of the rare deep-sea nematocarcinid genus Segonzackomaius Burukovsky, 2011 from the Philippine Basin is new to science and we revealed that the material previously reported as S. altus (Spence Bate, 1888) from Taiwan also belongs to this new species, based on a DNA sequence comparison. The new species S. sursus sp. nov. differs from S. altus by having a relatively shorter but ascending rostrum, and a longer telson, which distinctly exceeds the uropodal endopod. An identification key to the three known species of Segonzackomaius is provided. The multi-gene analyses do not support the monophyly of Nematocarcinus A. Milne-Edwards, 1881 because S. sursus sp. nov. forms a robust clade with N. lanceopes Spence Bate, 1888 and this clade is very separated from other species of Nematocarcinus. Nevertheless, a more extensive molecular study on the phylogenetic relationships amongst the taxa within the family Nematocarcinidae Smith, 1884 is necessary for a better comprehension of its evolution.

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How to Cite

Kou, Q., Chan, T.-Y. & Li, X. (2025) A new species of the rare genus Segonzackomaius Burukovsky, 2011 (Decapoda, Caridea, Nematocarcinidae) from the Northwest Pacific. Zootaxa, 5627 (2), 373–386. https://doi.org/10.11646/zootaxa.5627.2.8