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Issue: Vol. 4679 No. 3: 3 Oct. 2019
Type: Article
Published: 2019-10-03
DOI: 10.11646/zootaxa.4679.3.2
Page range: 450–462
Abstract views: 62
PDF downloaded: 3

Two new species of Bairdiidae (Ostracoda: Crustacea) from the western Pacific coast of Japan

Department of Geosciences, Faculty of Science, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka City, 422-8529 Japan.
Department of Earth and Environmental Sciences, College of Humanities and Sciences, Nihon University, 3-25-40 Sakurajousui, Setagaya-ku, Tokyo, 156-8550 Japan.
Department of Geosciences, Faculty of Science, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka City, 422-8529 Japan.
Crustacea Ostracoda Bairdioidea Neonesidea Bairdoppilata soft-part anatomy brush-shaped organ synapomorphy Japan

Abstract

Herein, two new bairdiid ostracod species in the western Pacific Coast of Japan, namely Neonesidea kamiyai sp. nov. and Bairdoppilata japonica sp. nov. are described. They are the fourth and first species described in their respective genus in Japan within the Recent Bairdiidae. The description of the two new species is based on scanning electron microscopic investigation of carapaces and on the analysis of anatomy and chaetotaxy of appendages. Scanning electron microscopy of the carapace and soft-part anatomy of appendages of the two new species provided the complete species description. An asymmetric brush-shaped organ, with the right part considerably larger than the left part, is found in both species; this characteristic is suggested to be synapomorphic for some taxa in the family Bairdiidae.

 

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