Taxonomical studies on the family Elateridae were mainly condensed on morphological characters. In palearctic region, most comprehensive studies were done in France, Armenia, Italy, Czech and Slovak Republics, Poland. These studies, which cover male genital organ structures, are systematical researches. In this study, male genital organs of Central Anatolian species of the subfamilies Elaterinae and Melanotinae were examined. Morphology of male genital organs were drawn in detail and described. Male genital organ structures of Adrastus circassicus and Melanotus (s.str.) bajulus were examined in detail for the first time. According to male genital organ morphologies, systematical status of examined species are discussed.