A new genus and species of parasitic isopod (Isopoda: Bopyridae: Orbioninae) from Chinese waters, with a new locality and host record for Orbione halipori Nierstrasz & Brender à Brandis, 1923.

Parasymmetrorbione bicauda n. g., n. sp. is described from Chinese waters infesting two species of Solenocera Lucas (Decapoda: Penaeoidea). The new genus differs from other orbionine genera by the following combination of features: a pronounced asymmetry of coxal and lateral plate development, biramous uropods, tuberculate lateral plates and a digitate internal ridge on oostegite 1. A key to the eight genera of the Orbioninae R. Codreanu, 1967 is presented. Orbione halipori Nierstrasz & Brender à Brandis, 1923 is also recorded from a new Chinese locality and a new host.