Imago"s flight activities of Protaetia brevitarsis were from mid June to early September, and those of Allomyrina dichotoma were from mid June to late August. These activities were mainly influenced by amount and duration of rain. They were more active when there was small amount and short period of rain in a year. Distribution depth of the 3<SUP>rd</SUP> larvae of P. brevitarsis were not affected to the temperature. But A. dichotoma were sensitively react to the temperature, almost larvae were near the surface when high temperature. The distribution of P. brevitarsis was not affected by humidity, but most of A. dichotoma were near the surface when high humidity. Larvae of P. brevitarsis usually ate their dead individuals. When we supplied as food the pork, chicken, fresh mackerel, bread, apple, and pear. They took all of these food but larvae of A. dichotoma took only bread. Two species were lived in similar environment but those feeding habit was very different.

1984-1989년의 6년간 Blacklight trap에 유살된 성충수를 통하여 큰검정풍댐이와 참검정풍뎅이와 참검정풍뎅이 성충의 비상활동을 조사하였다. 큰검정풍뎅이 성충의 비상 활동은 주로 6월 하순-8월 상순에 이루어지고 7월 중순에 peak으며, 참검정풍뎅이 성충의 비상 활동은 주로 홀수년도의 5 월 상순-6월 하순에 이루어졌는데 peak의 시기는 해에 따라 일정치 않았다. 두 종의 비상 기간 중의 비상 활동은 모두 강우량이 많은 시기에 활발하였으며 참검정풍뎅이 월동 성충의 비상 활동은 일평균기온 이상 되면서 시작되는 것으로 보였다. Blacklight trap에 유살된 성충의 성비에 있어, 큰검정풍뎅이는 자충이 53.3%였으나 참검정풍뎅이는 야외 채집 성충의 57.4%가 자충이 었음에도 불구하고 자충이 전혀 없었다.