Checklist of the micromolluscs in the intertidal zone of the Yellow Sea and Bohai Sea, China Author Qi, Lu https://orcid.org/0000-0002-8939-9390 Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, China Author Xu, Biyang Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, China Author Kong, Lingfeng https://orcid.org/0000-0001-5263-1697 Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, China & Sanya Oceanographic Institution, Ocean University of China, Sanya, China & Laboratory for Marine Fisheries Science and Food Production Processes, Laoshan Laboratory, Qingdao, China klfaly@ouc.edu.cn Author Li, Qi Laboratory for Marine Fisheries Science and Food Production Processes, Laoshan Laboratory, Qingdao, China & Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, China & Sanya Oceanographic Institution, Ocean University of China, Sanya, China text Biodiversity Data Journal 2023 2023-07-07 11 105444 105444 http://dx.doi.org/10.3897/BDJ.11.e105444 journal article http://dx.doi.org/10.3897/BDJ.11.e105444 1314-2828-11-e105444 B501C317FB6355009DE70D45CB0F336C Pyrunculus tokyoensis Habe, 1950 Native status Found on sandy and mud bottoms in intertidal seagrass beds. Distribution China and Japan. Notes P. tokyoensis is similar to P. phiala , but differs from P. phiala in having distinct spiral grooves overall. Diagnosis Shell minute (3.0 +/- 0.34 mm in length, 1.3 +/- 0.11 mm in width), pyriform, thin, white, polished (Fig. 14 ). Apex narrowly perforated with rounded margin. The upper end of the body spiral shrinking and the lower end expanding, covered with spiral grooves overall, axial grooves distinct on upper extremity. Columella with fold. Outer lip thin.