Variable butterflies Butterflies, graceful and fragile, flitting to and fro, are like a fanciful riddle. A peculiar trait of butterflies is the way they vary in appearance depending on setting, season, sex, geography, and even individual variations.
娉婷纖弱、來去無蹤的蝴蝶，總像謎一般引人遐想，更奇特的是，蝴蝶依環境和季節，而有「性別」、「個體」、「地理」、「季節」等變異性。