A new genus and species Yananphasma chresmodoides n. gen. n. sp. of susumaniid (Insecta) is described from the Middle Jurassic Yan'an Formation in China, based on a well preserved complete forewing. Our observation shows that these polyneopteran insects have narrow elongate forewings with parallel veins in their distal part, have a venation of phasmatodean type instead of archaeorthopteran type, with the median vein well separated from the radial vein and cubital vein and cubitus anterior emerging from the stem cubitus. (c) 2025 Elsevier B.V. and Nanjing Institute of Geology and Palaeontology, CAS. All rights are reserved, including those for text and data mining, AI training, and similar technologies.