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Species Diversity
Abstract
The taxonomy of Pleistocene and Recent microporids collected from the Pacific coast of Japan and reported previously as Micropora coriacea (Esper in Johnston, 1847), Microporina articulata (Fabricius, 1821), and Verminaria areolae Sakakura, 1935 is revised. Two new species, Micropora mawatarii and Micropora plana are described from Japanese material previously reported as M. coriacea, and Micropora rimulata Canu and Bassler, 1929 from Japan is compared with specimens from other parts of the Pacific. The differences between Microporina japonica Canu and Bassler, 1929 and M. articulata are reexamined. A new genus, Metamicropora, is erected for Verminaria areolae, which had been placed previously in Microporina.
I thank Dr Dennis P. Gordon of the National Institute of Water & Atmospheric Research (Wellington) and Prof. Matthew H. Dick of Hokkaido University for critical advice on the manuscript; Drs Hisayuki Yamaguchi, Midori Matsumoto, Koji Kameo, and Noboru Furukawa for permission to use the SEM at Chiba University; Dr Tomoki Kase of the National Museum of Nature and Science (Tsukuba) for cataloging and storing the study material in that museum; Emeritus Prof. Shunsuke F. Mawatari (Hokkaido University), and Drs Ji Eun Seo (Woosuk University), Asit K. Guha (Indian Institute of Technology, Kharagpur), Naotomo Kaneko (Geological Survey of Japan), and Masato Hirose (The University of Tokyo) for providing literature; and Mr Yasuo Nishizawa for supplying material from his collection.
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