Pseudidotheidae (Crustacea: Isopoda: Valvifera) reviewed with description of a new species, first from Australia Author Poore And T, Gary C. B. text Memoirs of Museum Victoria 2004 61 1 75 83 journal article 1447-2554 Pseudidothea Ohlin, 1901 Pseudidothea Ohlin, 1901: 276 .— Nordenstam, 1933: 113 .— Hale, 1946: 168 .— Sheppard, 1957: 174 .— Hurley, 1957: 15 .— Wägele, 1991: 84–87 . Type species. Pseudidothea bonnieri Ohlin, 1901 (by monotypy). Diagnosis . As for family. Remarks . Ohlin (1901) was “almost convinced” that Pseudidothea bonnieri was identical to Idotea miersii Studer, 1884 and noted that “the localities where they were dredged are nearly the same.” He nevertheless, erected his new species. He also expressed his “suspicion” that his new genus was identical to Arcturides Studer, 1883 . Hale (1946) listed three characters that separated the two genera. In Arcturides , the coxae of pereonites 2–7 are distinctly marked off, the antenna 2 flagellum is of three articles and the uropodal exopod as long as endopod. Hale’s view was confirmed by Poore (2001) whose phylogenetic analysis concluded the two genera belong in different families.