The Corbiculidae Gray, 1847, is a group of limnic clams of considerable ecological and evolutionary potential. Among them, some freshwater species of Corbicula Megerle von Mühlfeld, 1811, are hyper-invasive neozoon in North and South America as well as Europe where currently some taxa are rapidly extending their range rendering them of special ecological importance. Next to the extraordinary invasive potential of the “Asiatic clam”, corbiculids are remarkable in their recently discovered wide spectrum of reproductive strategies, including intrabranchial incubation (brooding). In concert with their colonization ability, these biological properties render corbiculids an ideal model group for studying evolutionary transformations. However, the taxonomy of these clams is in a chaotic state, with phylogenetics being largely unresolved. As a first step towards a comprehensive systematic revision of Corbiculidae, we here document the type material in the Natural History Museum of the Humboldt University in Berlin (ZMB), comprising essentially the invasive Corbicula but supplemented by those taxa traditionally attributed to Batissa Gray, 1853, and other genera. This account adds considerably to the compilation by Counts (1991), who omitted almost all ZMB material of Corbicula. We report on a total of 45 types (33 for Corbicula, 8 for Batissa, 1 for Polymesoda, and 3 of unresolved generic affinity) represented in the ZMB; this reflects more than 7% of nominal taxa known in corbiculids.
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Vol. 49 • No. 2