Among them East Asian element predominated over the other elements, making up 51.35 percent of the total species ,then Oriental element occupying 25.51%, Palaearctic 18.45% and Eurytopic only 2.26%.

这主要归属4区系成分，其亚成分占优势，占总数51.35%，成分占25.51%，古北成分占18.45%，广布成分仅2.26%。