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%.
这些种类主要归属4种系,其中东亚占优势,占总数51.35%,东洋占25.51%,古占18.45%,广布仅2.26%。