Many migratory flights of butterflies have been recorded in history. According to Williams 1930 statistics, it has reached 1273 times. It is known that 2 14 species of butterflies in the world have the habit of migration and flight.
Butterfly migration groups are large and small, with a number of millions. The composition of the migrant population is single and mixed. The distance of migration is short and long, and the distance is short, only in a small range; People who are far away often fly over continents or oceans. For example, Webster reported an anecdote in 1935, saying that Papilio flew from Mexico to Canada and Alaska for a long distance of 4,000 kilometers.
There are not many records about butterfly migration in Chinese history. According to the records in historical documents, 1603 to 1933 was obtained only five times. It happened in Yunnan and Guangxi provinces, and the last time was 1933. According to the Shanghai News on June 16, "Kunming, Yunnan1May 2, 933 was cloudy at noon, and there were tens of millions of white butterflies in Shili Banqiao in the east of the city. They flew from the east, all over the fields, trees and walls of the town, white and flawless, without a crack. ..... After resting for two hours, the butterfly flew again ... and then flew to the western provincial capital. The town is full of people. This butterfly is pure white with one or two small black spots on its wings. There are more than 10 million, and there is no other color in the middle ... "
In recent years, this newspaper has also reported the phenomenon of butterfly migration many times. The latest report was published in Jiefang Daily on August 2nd 1988: "The phenomenon of' butterfly snow' occurred three times in a row from July 19 to July 2nd1day in Xinglong Mountain Scenic Area, Yuzhong County, Gansu Province. According to local witnesses, these three "butterfly snows" all appeared in the morning 10 to the evening 1, and butterflies flying all over the sky flew from Xinglong Mountain to Maxian Mountain. Butterflies are yellow and white with black spots. The largest group appeared in the morning of 19 10. The Xinglong Gorge, which is nearly 100 meters wide, is full of butterflies. This butterfly array is about 5 kilometers long from front to back. Nearly three hours later, some people detained dozens of them with straw hats. "
Unfortunately, in the history of butterfly migration in China, no real butterfly specimen has ever been captured, so it is difficult to make a report with scientific value. The author hopes that butterfly lovers from all over the country will follow the camera and capture the butterfly specimens participating in the migration, filling this gap in the history of butterfly migration in China.