Of 9620 Anopheles larvae hunted, 92.57% were An. superpictus that were found in all rural districts. Among the larval nests containing this species, 67.8% and 32.2% were permanent and temporary respectively, also, 62.6% of them were of stagnant water; and 37.4% were of the running water. The larval nests without plants, sunny, with a sandy bottom and clean water formed respectively 46.9%, 88.7%, 55.7% and 94.8% of the total larval habitats. Most of natural larval nests and most of the artificial larval nests were located respectively in the sides of the rivers (62.2%) and in the plots of rice cultivations (82.3%) (Table 3).