Abstract
Four new species within the genus Pseudoeupolyphaga are described and illustrated: Pseudoeupolyphaga duani Ren & Han, sp. nov. , Pseudoeupolyphaga menglianensis Ren & Han, sp. nov. , Pseudoeupolyphaga spelunca Ren & Han, sp. nov. , and Pseudoeupolyphaga vestis Ren & Han, sp. nov. Morphological variants are recorded for the species Pseudoeupolyphaga pilosa . These findings further enhance the documented diversity and distribution patterns of Pseudoeupolyphaga in Southwest China.

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