Simulium (Inaequalium) inaequale, described as Eusimulium
inaequalis (G Paterson & RC Shannon 1927), is a moderately
anthropophilic species with a broad distribution. It is known from Brazil (from Amapa, Paraiba, and Mato Grosso to Rio Grande do Sul), Paraguay (Alto Parana and Cordillera), Bolivia (Nor
Yungas, La Paz) and Argentina (Jujuy, Salta, Tucuman, and Misiones).