Mascarene Freshwater Prawn (Macrobrachium hirtimanus)  

The Mascarene Freshwater Prawn was described in 1811, the species was apparently endemic to the islands of Mauritius and Réunion, Mascarene Islands, where it is known to have inhabited several rivers.  

The species was last recorded in the 1980s on Réuinion and was not found in later surveys, so is now either extremely rare or may already be extinct. [1][2]  

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References:  

[1] P. Keith; E. Vigneux: First capture of Macrobrachium lepidactylus (Hilgendorf, 1879) (Palaemonidae) on Réunion Island, followed by a commentary on Macrobrachium hirtimanus (Olivier, 1811). Crustaceana 73(2): 215-222. 2000 
[2] P. Keith: Freshwater fish and decapod crustacean populations on Réunion Island, with an assessmemnt of species introductions. Bulletin Français de la Pêche et de la Pisciculture. 364: 97-107. 2002  

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edited: 24.04.2019