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 shimianensis Wang sp. nov. ( Figs 127–135 ) Type material. HOLOTYPE : J ( CN22 Piskshm001), CHINA : SICHUAN : Ya’an Prefecture , Shimian County , Liziping Township , 28°59′39″N , 102°24′31″E , 2520 m , 20.vii.2022 , leg. Dan-Chen Zhu ( DALU ) . PARA- TYPES: 10 ♀♀ ( CN 22Piskshm002–011), same data ( DALU ). Diagnosis. This new species can be differentiated from the other members of this group by the combination of the following characters: 1) pleura and coxae greatly melanized ( Fig. 129 vs. mostly light grayish or yellowish brown in Figs 208–211 ); in males, 2) gonostyli with basal lobe greatly elongated, thinner than distal portion of gonostyli, and evenly curved ( Fig. 130 ); 3) ventral branch of parameres slender and extending slightly beyond ventral valves of aedeagus, directing inner-basally at base but abruptly curved caudad ( Figs 132, 133 ); 4) dorsal branch of parameres crossed posterior to ventral valves of aedeagus, and exceeding apex of dorsal processes ( Fig. 132 ); 5) dorsal processes slightly humped in middle and each with rounded dorsal process ( Fig. 133 ); in females, 6) apical prominence of subgenital plate with wide semicircular emargination terminally ( Fig. 134 ); 7) laterotergites IX minute ( Fig. 134 ); and 8) medigynium with basal half of main plate distinctly narrower than distal half, axis with apodemes extending far beyond main plate and slightly divergent ( Fig. 135 ). Measurements (mm). Male (n = 1): AtL 10.8, AbL 9.0, BdL 13.0, FL 12.2, FW 3.2, HL 11.3, HW 3.1. Female (n = 10): AtL 10.5–11.0, AbL 7.2–8.5, BdL 11.0–12.8, FL 13.5–15.0, FW 3.0–3.4, HL 12.0–14.0, HW 3.0–3.3. Etymology. Named after the type locality, Shimian County. Adjective. Distribution. China : Sichuan : Shimian: Liziping ( Fig. 212 ).