A new griffenfly genus and species from the Early Pennsylvanian of the Xiaheyan locality (Ningxia, China) (Insecta: Odonatoptera) Author Nel, André 98DF555A-16A0-4073-871C-E38BB506C676 Institut de Systématique, Evolution, Biodiversité, ISYEB, UMR 7205, CNRS, MNHN, UPMC, EPHE, Muséum national d’Histoire naturelle, Sorbonne, Universités, Université des Antilles, 57 rue Cuvier, CP 50, Entomologie, F- 75005, Paris, France. anel@mnhn.fr Author Ji, Gaozhe 7E6B4664-3D20-4C93-BD0C-B9C3A6BD3CF1 State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China. 1220126051@qq.com Author Gao, Jian E9FB522A-7623-4813-85B8-B6E0BD04E0B1 State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China. jiangao@nigpas.ac.cn Author Huang, Diying 169913D3-F6D6-4002-A1A9-559BBDD91667 State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China. dyhuang@nigpas.ac.cn text European Journal of Taxonomy 2024 2024-03-05 925 67 75 https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2451/10873 journal article 10.5852/ejt.2024.925.2451 2118-9773 10804914 26601DDA-CF20-4A4D-A372-626AA707B595 Sinoerasipteron xiaheyanensis Nel & Huang gen. et sp. nov. urn:lsid:zoobank.org:act: C76DAF12-4850-41CF-A727-5D6332A81DF7 Figs 2–3 Diagnosis As for the genus, by monotypy. Etymology Named after the Xiaheyan locality ( Ningxia , China ). Material examined Only one specimen collected from the black shale of the Tupo Formation at Xiaheyan locality, without counterpart. Holotype CHINA • imprint of a forewing, with extreme base missing and apex folded; Xiaheyan , Muscovian Tupo Formation; stored at Nanjing Institute of Geology and Palaeontology; NIGP202927 ; CAS . Description Imprint of moderately well preserved forewing (for justification see below), nearly complete, with extreme base missing; wing elongate not triangular-shaped; preserved length 68.1 mm , maximum width 10.8 mm ; anterior wing margin and ScP straight; ScP reaching anterior wing margin opposite fork between RP1/2 and RP3/4 (i.e., at 30% of wing length); RA distally fused with C into strong costal vein; area between RA and RP1 with strong oblique crossvein at point of fusion of RA with C, basad origin of IR1; arculus at ca 8.0 mm from wing base; RP+MA 2.5 mm long; stem of of RP 10.0 mm long basad fork between RP1/2 and RP3/4; three longitudinal veins in area between IR1 and RP2; RP1/RP2 fork 27.5 mm distal of fork between RP1/2 and RP3/4; IR2 with two-three posterior branches; RP3/4 simple; MA with seven posterior branches; MP simple, undulated; CuA regularly posteriorly pectinate, with seven posterior branches; CuP- and CuA-crossings difficult to identify; CuP with long stem, seven-eight branches, and three-four rows of cells between it and posterior margin of wing; two rows of cells between AA and posterior margin of wing with four-five poorly defined posterior branches. Fig. 2. Sinoerasipteron xiaheyanensis Nel & Huang gen. et sp. nov. , holotype (NIGP202927). Photograph. Scale bar = 5 mm. Fig. 3. Sinoerasipteron xiaheyanensis Nel & Huang gen. et sp. nov. , holotype (NIGP202927). Reconstruction. Scale bar = 5 mm. Age and outcrop Tupo Formation at Xiaheyan locality, Zhongwei County, Ningxia Hui Autonomous Region, NW China ; Moscovian, Pennsylvanian.