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%.

这些类主要4区系成分，其东亚成分，总数的51.35%，东洋成分25.51%，古北成分18.45%，广布成分仅2.26%。