New Tudivasum Rosenberg & Petit, 1987 (Mollusca: Vasidae) from Queensland and the first report of sinistralism in that genus

Abstract

Five new Tudivasum species are described from Queensland, Australia. Currently, only Tudivasum armigerum (Adams, 1856) and Tudivasum rasilistoma (Abbott, 1959) are recognized from the east Australian Coast, and are of comparable in size to the new species. An additional species, Tudivasum kurtzi (Macpherson, 1964) from northwestern Australia is included in this study as it is also of comparable size to the new species described here, although it is not found in the same biogeographical area. A coastal species, Tudivasum annettae n. sp. is described from Shoal Point, Central Queensland, where it has been found on intertidal sand/mud flats and near shore reefs. Tudivasum barbaracollinsae n. sp. is described from the far northern region of Queensland off the Cairns coastal trawler grounds. Tudivasum glendae n sp. is described from the northern Queensland trawling grounds off Townsville. Tudivasum amandacantamessae n. sp. is described from the central Queensland trawler grounds off Bowen. Tudivasum variabilis n. sp. is taken from the southern Queensland trawler grounds off Yeppoon. The first example of a sinistral Tudivasum from Australia is also presented.