| 5 | Wing with several spots; setae along inner margin of gonostylus strongly split | P. ramiferum Kieffer, 1921 |
| – | Wing with a large black spot on entire basal area; setae along inner margin of gonostylus not split | 5a |
| 5a | Acrostichals 8; humerals 5; dorsocentrals 20; anal point strong and tapering | P. heberti Lin & Wang, 2019 |
| – | Acrostichals 31; humerals 38; dorsocentrals 104; anal point strong, contracted in middle, as a large inflated globe apically with candle-like spine | P. huapingensis Liu & Lin, sp. nov. |
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