New Genera and Species of the Megaluropus Group (Amphipoda, Megaluropidae) from American Seas

摘要

The species of the Megaluropus group, here placed in three genera, two of which are described as new, are reported from the Caribbean Sea and the eastern Pacific Ocean. The west African Megaluropus longimerusSchellenberg is redescribed and a lectotype chosen. It is placed in the new genus Gibberosus which otherwise has three American species, G. falciformis, G. myersi, and a new species, G. devaneyi. Megaluropus is now confined to the Old World. A second new genus from the New World, Resupinus, is described to include R. visendus and two new species, R. spinicaudatus and R. coloni. These organisms have been observed to walk upside down in a cradle of their legs similar to melphidippids.