New data on the ostracode genera Laocoonella de Vos & Stock, Redekea de Vos, and Aspidoconcha de Vos; with a key to the family Xestoleberididae and a resume of symbiosis in Ostracoda

Investigation of the commensal genus Aspidoconcha de Vos indicates that it belongs in the family Xestoleberididae. Relationships of the commensal Redekea de Vos are uncertain. The genus Laocoonella de Vos & Stock is referred tentatively to family Cytheruridae. Among Ostracoda, symbiosis is more common than was previously realised; the possible occurrence of intra-Ostracoda symbiosis is reported.