Paguristione uniuropodus, a new genus and a new species of Pseudioninae infesting hermit crabs from China (Crustacea, Isopoda, Bopyridae)

Paguristione uniuropodus gen. n., sp. n. infests Paguristes sp. in the East China Sea. Paguristione gen. n. differs from the closely related genera Pseudione and Pagurion by its females having indistinct lateral plates on the last two pleomeres and its male with a long tapering pleon of six pleomeres, lacking both pleopoda and uropoda.