Abstract
Macrobrachium Spence Bate, 1868 includes large species of freshwater and estuarine shrimp, with approximately 267 described species, of which 21 have reported occurrences in Brazil. Until recently, there was uncertainty about the taxonomic status of Macrobrachium amazonicum (Heller, 1862) and Macrobrachium pantanalense Dos Santos, Hayd & Anger, 2013, with M. pantanalense considered a syno…