Figure 4: Monthly activity of Anopheles stephensi larvae according to counties in south of Iran, 2002-2016. In Kahnooj study, they just collected adults, so there was no data about larvae. In Bandar Abbas, we found two studies conducted in 2002 and 2014. The highest density of larvae was found to be in Jask County. In the case of monthly activity, the density of larvae of Anopheles stephensi in Sarbaz County was almost constant during the year. In the study of Bashagard County, the highest density was in July and the trend of increase and decrease has been seen during the year. In other studies, there were two peaks during the year, one in October and another in the spring between March and May.