Mya Linnaeus, 1758

Zhang, Jun-Long, Xu, Feng-Shan & Liu, Rui-Yu, 2012, The Myidae (Mollusca, Bivalvia) from Chinese waters with description of a new species, Zootaxa 3383, pp. 39-60 : 43

Genus Mya Linnaeus, 1758

Mya Linnaeus, 1758: 670 .

Hiatula Modeer, 1793: 178 (fide Keen, 1969: 691). Myarius Duméril, 1806: 168 (fide Keen, 1969: 691). Arenomya Winckworth, 1930: 15 .

Diagnosis. Shell thick, gaping both anteriorly and posteriorly; sculpture of commarginal growth lines. Type species. Mya truncata Linnaeus, 1758 (by subsequent designation of Children, 1822) (ICZN Op. 94, Dir. 72; see ICZN 2011).

Remarks. Some authors recognize two subgenera, Arenomya and Mya ( Bernard 1979; Habe 1977; Keen 1969; MacNeil 1965). However, Winckworth (1930) erected Arenomya without diagnosis only because “The marked conchological differences between adult Arenomya and Mya (type truncata L.) seem sufficient reason for giving this name” ( Winckworth 1930: 15). Coan et al. (2000) argued that any character chosen for a subgeneric distinction would leave one or more species in a doubtful position. This view is followed here.