Freshwater molluscs of the Eastern Congo: notes on taxonomy, biogeography and conservation Author Schultheiss, Roland Author Ndeo, Oscar Wembo Author Malikwisha, Meni Author Marek, Carina Author Bössneck, Ulrich Author Albrecht, Christian text African Invertebrates 2011 2011-12-31 52 2 265 284 journal article 2305-2562 Pisidium pirothi Jickeli, 1881 Fig. 3G Pisidium pirothi : Jickeli 1881: 340 . ( Type locality: “ Harasa zwischen Atbara und Bassalam ”, Sudan ) Taxonomic remarks: This species is known to be widely distributed in Africa. However, a large variability in shell characteristics is evident in this taxon, as in many of the other African species of the genus ( Albrecht et al. 2010 ). Thus a comprehensive phylogenetic and taxonomic treatment of African Sphaeriidae is overdue. Habitat description: The species was sampled from the Kangambili R. in the vicinity of Mambasa town at a depth of 0.2 m. The substrate comprised mainly clay and detritus. Collecting site: 22. IUCN Red List Category: Least Concern ( Appleton et al. 2009 a ).