Nais kisui sp. nov. (Annelida: Clitellata: Naididae) from Japan

1 Iwatsuki Senior Highschool, Jonan 1-3-38, Iwatsuki, Saitama, 339-0043 Japan E-mail: springcomes1000times@hotmail.com 2 Department of Natural Science, Faculty of Education, Hirosaki University, Hirosaki, 036-8560 Japan E-mail: ohtaka@cc.hirosaki-u.ac.jp 3 Estonian University of Life Sciences, Centre for Limnology, 61117 Rannu, Tartumaa, Estonia E-mail: tarmo.timm@emu.ee (Received 13 August 2008; Accepted 4 November 2009)