Let's find out! Is it true that "when snow bugs fly, the first snow will fall"?

In Hokkaido, it's said that "when snow bugs fly, the first snow will fall," but is this really true? In Hokkaido, adult Todononeowawamushi aphids migrate to Mandarin orange trees around October. Meanwhile, the first snow in Hokkaido is said to fall on October 28th in Sapporo, and on October 19th in Wakkanai and Asahikawa, the earliest in Hokkaido (average values according to the Sapporo District Meteorological Observatory).

In other words, the timing is perfect: "The Japanese aphids start flying, followed by the first snowfall."

The Todonooneowata beetle has a generally weak flying ability and sways back and forth as it flies, making it look like snow, hence the name "snow bug."

This sight makes you feel like the long Hokkaido winter is about to begin.