Taxonomy of the Panorpa issikiana species group, with descriptions of twenty new species (Mecoptera: Panorpidae) Author Wang, Ji-Shen College of Agriculture and Biological Science, Dali University, Dali, Yunnan 671003, P. R. China; e-mail: wangjishen 826 @ gmail. com & Cangshan Forest Ecosystem Observation and Research Station of Yunnan Province, Dali University, Dali, Yunnan 671003, P. R. China & Corresponding author Author Zhao, Can-Jun Biodiversity Conservation and Breeding Center (Dali) of Northwestern Yunnan, Bureau of the Cangshan-Erhai National Nature Reserve, Dali, Yunnan 671000, P. R. China; e-mail: 180389099 @ qq. com text Acta Entomologica Musei Nationalis Pragae 2024 2024-06-15 64 1 79 106 http://dx.doi.org/10.37520/aemnp.2024.007 journal article 10.37520/aemnp.2024.007 1804-6487 12519728 B87622D2-95FB-4692-A76E-ABC00EF184B1 Panorpa luojishana Wang sp. nov. ( Figs 76–85 ) Type material. HOLOTYPE : J ( CN22 Piskljs001), CHINA : SICHUAN : Liangshan Yi Autonomous Prefecture , Xichang City , Huangshui (yellow water) Township , western slope of the Luoji Mountain , 27°35′14″N , 102°14′22″E , 2000 m , 30.vi.2022 , leg. Dan-Chen Zhu ( DALU ) . PARA- TYPES: 1 J 3 ♀♀ ( CN 22Piskljs002–005), same data ( DALU ). Diagnosis. This new species can be differentiated from the other members of this group by the combination of the following characters: in males, 1) parameres short, extending only to middle portion of dorsal processes of aedeagus ( Figs 82, 83 ); 2) ventral branch of parameres nearly 4/5 as long as dorsal branch ( Figs 82, 83 ); 3) dorsal processes of aedeagus divergent and forming median cleft, with smooth surface ( Fig. 83 ); in females, 4) subgenital plate with apical prominence distinct and lacking terminal emargination ( Fig. 84 ); 5) laterotergites IX minute ( Fig. 84 ); and 6) medigynium greatly constricted at basal 1/3 and forming distinct basal plate ( Fig. 85 ). Measurements (mm). Male (n = 2): AtL 10.1–10.2, AbL 10.1–10.2, BdL 9.3–9.4, FL 12.5–12.6, FW 3.0, HL 11.4–11.5, HW 2.9. Female (n = 3): AtL 11.5–12.0, AbL 12.0–12.6, BdL 13.0–14.0, FL 12.0–12.4, FW 3.0–3.1, HL 11.0–11.5, HW 2.9–3.0. Etymology. Named after the type locality, Luoji Mountain (Luoji Shan in Chinese). Adjective. Distribution. China : Sichuan : Xichang: Luoji Mountain ( Fig. 212 ).