Also in Guilan Province, regarding the artificial larval nests, An. claviger and An. maculipennis complex selected wells (100%) and the rice cultivation farms (61.6%) for egg-laying respectively. But An. superpictus was not found in the artificial larval habitats. The similarity of this finding with the present study was only about An. maculipennis complex. Horsefall (1955) believes that wells are the most important larval habitat of An. claviger. MossaKazemi et al. collected larvae of An. superpictus in rice fields in Esfahan[18]. This finding is identical with the present study. In researching the larval habitats of anopheline larvae in Guilan Province, larvae of Anopheles plumbeus was obtained only from cavities of the trees and the used tires of vehicles.