Found throughout the Congo River basin including Pool Malebo (= Stanley Pool), Uélé, middle Congo River (Ref. 43912), Ruki (Ref. 43912, 93897), Lindi (Ref. 43912, 106290), Wagenia Falls, Lualaba (Ref. 106245) and upper Lualaba (Ref. 43912), but not in the Zambian Congo (Ref. 78218). Type localities of the holotype and the 460 paratypes of Pareutropius mandevillei: "Stanley Pool; Stanley Pool, archipel N'Djili, passe Yankau; Stanley Pool, près de la rivière Nsele; Grande Île de la N'Djili, refuge Congo-Ubangi; Stanley Pool, le long de l'Île Funa; Stanley Pool, extérieur des îles de l'archipel N'Djili vers l'île de Cristal; Stanley Pool, environs de Leopoldville; Leopoldville (ouest); Environs de Leopoldville" (Ref. 43912). Also Ref. 3570.