Анотація:
Heliotrypeta subgen. n. (type-species: Trypeta dorsocentralis sp. n.) is established within the genus Trypeta Mg.- two pairs of dorsocentral bristles, one of them situated before transversal suture of mesonotum; the lower part of sternopleurae is covered with dense yellow hairs; male surstyli elongate, with apical margin deeply cut out. Above characters are peculiar for the type-species (type locality: Yakovlevka, Primorye territory). T. basifasciata sp. n.- similar to T. binotata Zia, differs from it by basal transverse band of wing and apical margin of surstyli obliquely cut off (type-locality: Novoaleksandrovsk, Sakhalin). T. drangulifer sp. n.-differs from T. immaculata Mcq. by wing-pattern, bare oral margins and two short dark brown stripes of the front margin of the mesonotum (type-locality: Dubovoye, Kunashir) A key to all nine Trypeta species of the USSR fauna is given. The type-material of described species is deposited in the Zoological Institute, USSR Academy of Sciences (Leningrad).