Grandiclavula gen. nov., G. spatulata, sp. nov. and Oriencyrtus liaoi, sp.
nov. are described with scanning electron micrographs. Grandiclavula gen. n
ov. is separated from the related genera by its strongly compressed flagell
um, weakly concave facial transverse margin and fine striated-reticulate sc
ulpture on dorsum. All type specimens (except one paratype in NHM) are depo
sited in Institute of Zoology, Chinese Academy of Sciences, Beijing.