There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.
Among the species belonging to the genus Macrobrachium Spence Bate, 1868, M. carcinus
(Linnaeus, 1758) and M. olfersii (Wiegmann, 1836) are geographically widespread in
the western Atlantic from the Gulf Coast to southern Brazil. We describe the current
geographic distribution of M. carcinus and M. olfersii and include records of these
species in the state of Maranhão, Brazil.