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%.
这些种归属4种区系
分,其中东亚
分占优势,占总数的51.35%,东洋
分占25.51%,古北
分占18.45%,广布
分仅2.26%。