According to the extensive morphological observations of eggs and adult progenies of Anopheles pullus and A. yatsushiroensis, we identified A. yatsushiroensis as a synonym of A. pullus. Morphological characters of eggs hatched from wild caught females of A. pullus and A. yatsushiroensis were identical. The female progenies of each species showed the same characteristics at palpus and the typical wing types of contraspecies and intermediate wing types. A. pullus produced four types of wing varieties in their progenies, such as, without pale fringe spot on 5.2 vein and spical wing fringe, with pale fringe spot on 5.2 vein only, with apical pale fringe spot only, and with pale spots on both 5.2 vein and apical wing fringe.