original description(ofUnio (Nodularia) nyassanus var. hercules Preston, 1913)Preston, H.B. (1913). New species and varieties of terrestrial and fluviatile shells from Equatorial Africa. Revue de Zoologie Africaine, 3 (1): 47-62, 212, pl. 4-6. Bruxelles [15 September]. page(s): 59, pl. 4, fig. 10. [details]
basis of recordGraf, D. L.; Cummings, K. S. (2011). Freshwater mussel (Mollusca: Bivalvia: Unionoida) richness and endemism in the ecoregions of Africa and Madagascar based on comprehensive museum sampling. <em>Hydrobiologia.</em> 678(1): 17-36., available online athttps://doi.org/10.1007/s10750-011-0810-5 page(s): 24 [details] Available for editors [request]
additional sourceGraf, D.; Cummings, K. (2019). Musselp database: The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves). , available online athttp://mussel-project.uwsp.edu/[details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Distribution Africa, Lake Malawi [details] Type locality Lake Nyassa, Africa [details]