Ericusa
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Ericusa is a small taxonomic genus of medium-sized predatory marine gastropod molluscs in the family Volutidae, the volutes.
Ericusa is a small taxonomic genus of medium-sized predatory marine gastropod molluscs in the family Volutidae, the volutes. ==Distribution== Ericusa are endemic to Australia. They are found in temperate waters from southern Queensland to southern Western Australia. ==Shell description== The shells of Ericusa have a small rounded protoconch, are biconical with a rounded shoulder and have an elongate aperture with 4 distinct columellar plicae and a thickened outer lip. The whorls are regular, smooth and convex. The protoconch is globose and deviates 45° from the axis of the shell. The colour pattern of Ericusa is pink or yellow brown overlaid with a varied brown pattern. The largest species with shells exceeding 200 mm in length are Ericusa fulgetrum and Ericusa sowerbyi. ==Biology== Ericusa are nocturnal and prey on invertebrates. They have a large foot and siphon and they lay relatively large solitary eggs. ==Taxonomy== Several infraspecific taxa of Ericusa fulgetra have been named, on the basis of colour patterns of the shell. ==Species== † Ericusa allporti (R. M. Johnston, 1880) † Ericusa ancilloides (Tate, 1889) † Ericusa atkinsoni (Pritchard, 1896) † Ericusa fulgetroides (Pritchard, 1898) Ericusa fulgetrum (G.B. Sowerby I, 1825) Ericusa hamiltonensis (Pritchard, 1898) Ericusa ianmattiskei Hallan, 2023 † Ericusa macroptera (McCoy, 1866) Ericusa naniforma Bail & Limpus, 2013 † Ericusa ngayawang A. M. Yates, 2022 Ericusa papillosa (Swainson, 1822) Ericusa sericata Thornley, 1951 Ericusa sowerbyi (Kiener, 1839) † Ericusa subtilis (Ludbrook, 1978) ==References== Bail, P & Poppe, G. T. 2001. A conchological iconography: a taxonomic introduction of the recent Volutidae. Hackenheim-Conchbook, 30 pp, 5 pl. ==External links== . Gastropods.com : Ericusa; accessed : 15 December 2010
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