本文은 1964~’65年에 걸쳐 韓國의 南部地方 特하 大邱地方에서 많이 栽培되고 있는 감나무에 數年前부터 甚한 被害를 주고 있는 Oriental moth의 生態學的인 事項에 關한 硏究의 結果를 收錄하였다. (1) Oriental moth의 羽化 最盛期는 大邱地方에서 6月中旬頃이다. 그리고 産卵은 全部 葉裏面에 하며 葉上에서도 葉先端部에 大部分의 卵이 産卵되었다. (2) 卵期間은 1964年의 平均이 5.984土0.162 日이었고 1965年은 6.262土0.094 로서 兩年 모두 約 6日間 이었다. 그리고 室內 飼育室에서 부화율은 1964年이 84.4%였고 1965年이 96.1%였다. (3) 寄主植物別 生長率에 있어서 體長生長은 4寄主, 감나무, 고욤나무, 네군도단풍, 플라타너스에서 1齡蟲에서 3齡蟲까지는 고욤나무, 감나무, 플라타너스, 네군도단풍의 順位였으나 4齡蟲부터는 反對로 감나무, 고욤나무, 네군도단풍과 플라타너스의 順位였다. 頭幅의 生長率도 同一한 傾向을 나타내었다. 그리고 플라타너스꽃을 食餌로 한 個體들은 飼育 20日 경과 후 全部 死滅하였다. (4) 木蟲은 1年에 1回 發生하며 脫皮回數는 6回이다. 1回脫皮는 부화 후 約5時間 後에 일어나고 2~6回脫皮는 各各 約7日 간격으로 일어났다. 그리고 最終脫皮를 한 후 約 3日 後 Cocoon을 形成하여 越冬한다. (5) 幼蟲體上에 있는 針數가 位置別로, 各 齡別로 差異가 있으므로 齡의 判定아 可能하다. 特히 L2, D2, D3, D8, D10의 針과 L1, L3, L4, L5, L6, L7의 針은 각 齡別로 그 數가 다르므로 針으로 齡의 判定이 可能하다. (6) Cocoon 內에서 Pupation은 감나무 枝上에서 越多을 한 후 이듬해 5月中旬부터 Pupa가 형성되어 羽化期인 6月初旬까지 계속된다. (7) 雌成蟲이 體內에 가지고 있는 卵數는 平均 1匹 當 1325.5土2.7182 個였다.
The author studied on the bionomics of Oriental moth, Cnidocampa flavescens WALKER, damaging to the persimmon tree in the southern part of Korea from 1964 to 1965. The results can be summarized as follows; 1. Emergence peak period of Oriental moth was mid-June in Taegu district and eggs are deposited on the opposite side of persimmon tree leaf. Specially most of eggs are deposited on the terminal part of opposite side and its peak period was also mid-June. 2. Hatched percentage of eggs was 84.4% in 1964 while 96.1% in 1965 at the rearing room. Mean egg period was 5.984±0.162 in 1964 while 6.262±0.094 days in 1965. Thus during two years, the egg period was about 6 days. 3. In the growth ratio of Oriental moth fed on various host plants persimmon tree, Acer negund, Hazel-wood and Platanus, the best growth ratio was shown on the leaf of Hazel-wood from 1st till 3rd instar, but, on the contrary, persimmon tree was the best from 4th till the last instar. The growth ratio of head width was also the same tendency as the body length above mentioned. Individuals fed on the leaf of platanus were dead after 20 days. 4. Oriental moth has one generation a year and molts 6 times. The first molting occurred in 5 hours after hatched, and the other moltings were done at 7 days intervals. After 3 days since the last molting, larvae made the cocoon for over-winter in it. 5. As the bristles on the process of larval body are different from each position and instar, judgement of instars are possible by the counting of bristles on the body according to the Table 8. Specially the bristle of L. 2., D. 2, 3, 8, 10. and L. 1, 3, 4, 5, 6, 7, are perfectly different from each instar. From these bristles, instars can be recognized easily. 6. Pupation of larvae in the over-wintered cocoon on the stem of persimmon tree was done in mid-May and continued till early June when emergence will take place. 7. Mean number of eggs in the ovary was 1325.5±2.7182.