Taxonomic Studies on the Talitridae (Crustacea: Amphipoda) of Taiwan. IV. The Genera Paciforchestia and Lanorchestia gen. nov.

We report on two allied genera of the Talitridae from Taiwan: Paciforchestia Bousfield, 1982 and Lanorchestia gen. nov. Taiwanese specimens representing Paciforchestia are not identified to species due to their poor condition, but examination of these specimens has led us to revise the generic diagnosis of Paciforchestia. Specimens of the two species assigned to Paciforchestia, P. klawei (Bousfield, 1961) (type species of the genus) and P. pyatakovi (Derzhavin, 1937), were also examined. Lanorchestia kanoi gen. et sp. nov. is described from Lanyu Island ( Lan-Hsu), a small island of Taiwan. Lanorchestia is compared with and differentiated from the following allied genera: Parorchestia Dana, 1853, Agilestia Friend, 1982, Hawaiorchestia Bousfield, 1984, Tasmanorchestia Friend, 1987, Bousfieldia Chou and Lee, 1996, and Paciforchestia.