The Aims of this study are to investigate ecological environments and indoor-rearing conditions of Eurema hecabe for artificial rearing. Two different nesting site, a open area nearby small river(A area; Daejin-ri, Gonyang-myeon, Sachunsi, Gyoungsangnam-do) and a foot of a hill area(B area; Noryang-ri, Seolcheon-myeon, Namhae-gun, Kyoungsangnamdo), selected for investigation of ecological habitat environment, and investigated two times per month, during six month, from June to November in 2010. In result, the number of butterflies, Eurema hecabe, at the hill area(B area) was 6 times more than the open area(A area). We observed the number of eggs, larvae and puapae in the B area more times compared to those in the A area. In the B area, Lespedeza cuneata was higher preference than the other host plant, Lespedeza pilosa and Albizia julibrissin. For development of indoor-rearing conditions, common grass yellow butterfly, Eurema hecabe, was reared in a room condition. As a result of oviposition preference experiment, 100-mated-female laid significantly higher number of eggs 104.9 ± 19.6 on Lespedeza cuneata plant, whereas the number of eggs was 12.7 ± 4.5 on Cassia obtusifolia plant. Moreover, the eggs hatched within 5.1 ± 0.9 days from the day of oviposition and procent of egg hatchability was 53.7% on host plant. The headwidth of each developmental larval stage were 0.36 ± 0.02(1st), 0.61 ± 0.02(2nd), 0.93 ± 0.05(3rd), 1.46 ± 0.08(4th), 2.25 ± 0.11(5th). The larval period was 12.1 ± 0.9 days under high temperature, long day condition(25 o C, 16L : 8D), showing 81.0% pupal ratio. The pupal period was 6.9 ± 0.7 days, and the emergence rate was 79.6%. Based on above experiment, artificial rearing system of common grass yellow butterfly, Eurema hecabe was completed in indoor condition.

This study was conducted for investigation of habitat and development of indoor-rearing conditions of peacock butterfly, Inachis io (Linnaeus). Three different region, Mt. Kwangduk-san, Mt. Hae-san and Mt. Taebaek-san in Kangwon-do, was selected for investigation of domestic distribution and ecological environment of peacock butterfly. In result, there are many butterflies in the only two region, Mt. Kwangduk-san and Mt. Hae-san. On 16th April, 4 overwintered butterflies were observed in Mt. Hae-san. At the end of June and early in July, 51 individual next generation's butterflies were observed in Mt. Kwangduk-san and Mt. Hae-san. For development of indoor-rearing conditions, collected each 15 male and female peacock butterflies was reared in a room condition. Female butterflies laid eggs in the egg cluster on the underside of host-plant's leaves, Urtica angustifolia Fisch., in the ovipositioning room. We took 11 egg cluster with average 404.6 ± 23.6 eggs. Hatchablity of eggs was 92.3%, and the eggs hatched within 5.1 ± 0.9 days from the day of oviposition under high temperature, long day condition(25 o C, 14L:10D). The larval period was 18.3 ± 1.0 days under high temperature, long day condition(25 o C, 14L:10D), showing 81.0% pupal ratio. The headwidth of each developmental larval stage were 0.37 ± 0.01mm(1st instar), 0.66 ± 0.02 mm(2nd instar), 1.07 ± 0.05 mm(3rd instar), 1.81 ± 0.07(4th instar), 2.76 ± 0.08(5th instar). The pupal period was 8.4 ± 0.6 days, and the emergence rate was 87.5%.