“…neivai seasonal abundance showed activity from August-September to April-March (spring to fall) with a single peak or a bimodal pattern. Consistently, phlebotomine populations usually showed the highest density peaks during the warm-humid months, and the lowest in the cold-dry season, both in Brazil and Argen- tina (Aguiar & Soucasaux 1984, Gomes & Galati 1987, Salomón et al 2002, although the density is not always correlated with the rainfall and the temperature (Condino et al 1998). The Bella Vista 2000-2001 peak may be due to the fact that sand flies were collected there during the winter of year 2000, captures not observed in other sites or years.…”