초록
1985~1990년에 실내 및 야외에서 큰검정풍뎅이와 참검정풍뎅이의 산란활동을 조사하였다. 실온하에서 큰검정풍뎅이와 참검정풍뎅이의 산란기간은 31.70$\pm$13.33일, 61.17$\pm$23.15일, 실제산란일수는 9.00$\pm$5.03일, 22.33$\pm$11.72일, 자충당 총산란수는 23.43$\pm$16.26립, 65.67$\pm$37.97립, 자충당 1일 산란수는 2.60$\pm$2.50립, 2.94$\pm$2.34립으로 자충당 총산란수의 차이는 주로 산란일수에 기인하는 것으로 보였다. 큰검정풍뎅이에 있어 실온하에서의 산란시기는 야외에서의 산란시기보다 현저히 늦어졌으나, 참검정풍뎅이에 있어서는 실온과 야외에서의 산란시기가 거의 중복되었다. 야외에서 참거정풍뎅이의 장란충율은 큰검정풍뎅이보다 명백히 높았으나 장란충당 장랑수는 두 종이 거의 같았다. 참검정풍뎅이 성충은 망실 내에서 잡초의 초종간에 뚜렷한 산란 및 섭식선호성을 보이지 않았다.
Oviposition activities of the larger black chafer(HolotTichia mOTosa Waterhouse) and Korean black chafer(H. diomphalia Bates) were examined in the laboratory and field from 1985 to 1990. In H. mOTosa and H. diomphalia, total durations of oviposition were 31.70$\pm$17.33 days and 61.17$\pm$23.15 days, numbers of days of actual oviposition were 9.00$\pm$5.03 days and 22.33 $\pm$11.72 days, total numbers of eggs laid laid per female were 23.43$\pm$16.26 and 65.67$\pm$37.97, and numbers of eggs laid per female per day were 2.60$\pm$2.50 and 2.94$\pm$2.34, under laboratory conditions. Difference of total numbers of eggs per female between both species seemed to be due mainly to numbers of days of actual oviposition. Oviposition period under laboratory conditions was considerably delayed behind that in the field in H. morosa but the two oviposition periods were almost overlapped in H. diomphalia. In the field, rates of gravid females of H. diomphalia were obviously higher than those of H. mOTosa, but numbers of eggs per gravid female were almost same in the two species, H. diomphalia adults did not show marked oviposition and feeding preference among several species of weed plants in the insect net chamber.