Agrilus quadrisignatus Marseul, 1866

Examined specimens. CHINA. Beijing. Mafangcun env.; 40°23'56"N, 115°53'55"E; 6-2016; alt. 500 m; Adult host: Ulmus; 1 ♂, 1 ♀ (EJCB) // Songshan Nat. Res. env.; 40°31'04"N, 115°46'50"E; 6-2016; alt. 900–1200 m; Adult host: Ulmus; 1 ♂, 2 ♀ (EJCB). Jilin. Da Gu Jia, 20 km SEE Jilin; 43°47'33"N, 126°46'48"E; 6-2017; alt. 350 m; 2 ♂, 1 ♀ (EJCB) // Erdaobaihe, 200 km SE Jilin city; 42°25'17"N, 128°04'38"E; 6-2017; alt. 700 m; 2 ♂ (EJCB) // Jiaohe env., 95 km NEE Jilin; 43°57'N, 127°42'E; 6, 7-2017; alt. 400–600 m; 1 ♀ (EJCB). SOUTH KOREA. Gyeonggi-do, Bupyeong-ri; 37°45'04"N, 127°10'56"E; 6-2018; alt. 102 m; 1 (RAPC).

Host plant cited. Adult: Ulmus .