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 Genus Panorpa Linnaeus, 1758 Panorpa issikiana species group Diagnosis. This group of species can be differentiated from other groups in the genus Panorpa by the combination of the following characters: 1) body mostly black, rostrum with a dark brown stripe in the middle and yellowish brown on sides; 2) wing markings absent or extremely reduced; in males: 3) A7 greatly constricted and stalk-like at base; 4) median process of gonostyli absent; 5) parameres bifurcated; 6) aedeagus with dorsal processes greatly developed; 7) piston of sperm pump reduced; 8) aedeagus with hamulus present and sclerotized; and in females: 9) laterotergites IX greatly developed. Distribution. China : Chongqing , Guizhou , Sichuan , and Yunnan ( Fig. 212 ).