Genus Nepa Linnaeus, 1758

Nepa cinerea Linnaeus, 1758

Nepa cinerea Linnaeus, 1758: 440 (as new species); Nepa rubra Linnaeus, 1758: 440; Nepa scorpioaquaticus De Geer, 1773: 361; Nepa cinerea var. minor Puton, 1886: 8; Nepa seurati Bergevin, 1926: 290; Nepa cinerea var. major Bergevin, 294; Neap dollfusi Esaki, 1928: 436; Nepa cinerea var. orientalis Esaki, 1928: 436; Nepa rubra meridionalis Poisson, 1961: 635; Nepa remyi Poisson, 1961: 636; Nepa cinerea poissoni Tamanini, 1973: 239 .

Distribution in Iran. Guilan (Cox & Cox 1995; Linnavuori & Hosseini 2000), Mazandaran (Linnavuori & Hosseini, 2000), Ilam (Samin et al. 2011), Isfahan (New material), Khorasan (Modarres Awal 2008), Markazi (Vafaei 2005), West Azerbaijan (Sakenin et al. 2010; Ghahari et al. 2010a; Ahmadi et al. 2011, 2012).

General distribution. Euro-Siberian (Polhemus 1995; Fent et al. 2011).