Abstract
The Chinese endemic enid genus Pupopsis Gredler, 1898 is revised based on the literature, museum collections and specimens recently collected in Sichuan, Gansu and Xinjiang, China. The differences among four presumably closely related genera, Pupopsis, Clausiliopsis Möllendorff, 1901, Serina Gredler, 1898 and Holcauchen Möllendorff, 1901 are scrutinized and discussed. The type species Pupopsis pupopsis Gredler, 1898 is studied anatomically for the first time. The reproductive organs of “Pupopsis” soleniscus display characteristics similar to bradybaenid genitalia and the species is excluded from the genus Pupopsis. Eight new species, namely P. hendan sp. nov., P. maoxian sp. nov., P. rhodostoma sp. nov., P. subpupopsis sp. nov., P. subtorquilla sp. nov., P. yengiawat sp. nov., P. yuxu sp. nov., and P. zilchi sp. nov., are proposed based on shell and/or genital features. The redefined genus Pupopsis comprises fourteen species after the present revision. A new record of Pupopsis in Sichuan extends the known distribution range of this genus to the South.
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