"The records of this species from Entre Ríos and Santiago del Estero provinces are shown only by maps and specific localities are not given (Carvallo & Martínez 1968a, p. 121)." (Mitchell & Darsie, 1985).
Disease relations: From pools of Ochlerotatus serratus were isolated Aura virus in 1966 in Misiones, Argentina (Sabattini et al. 1998) and Oropouche virus in Brazil (Pinheiro et al., 1981). Specimens naturally infected by the Yellow Fever virus were found in Brazil (Souza et al. 2010). Ochlerotatus serratus was able to harbor the Mayaro virus after experimental parenteral infection (Muñoz & Navarro, 2012). The species has been potentially involved as vector of the Yellow Fever Virus (Cano et al. 2022).