Agrilus hexastigmus Bourgoin, 1925

= A. rilliardi Baudon, 1988 syn. nov.

Examination of the holotype of A. rilliardi preserved in PRCN revealed its conspecifity with A. hexastigmus .

Examined specimens. LAOS. Bolikhamxai: 8 km Northeastern of Ban Nape; 18°21’N, 105°08’E; 5-2001; alt. 600 m; 17 (EJCB) // Ban Nape—Kaew Nua Pass; 18°22’20”N, 105°09’06”E; 4, 5-1998; alt. 500–700 m; 1 ♂, 2 ♀ (EJCB) // Ban Nape (8 km NE); 18°21’N, 105°08’E; 5-2001; alt. 600 m; 1 ♀ (EJCB) . Champasak: Bolaven Plateau, Route (No. 23) Pakse— Paksong, Ban Itou env. (km 35); 15°10’24”N, 106°05’48”E; 4-1999; alt. 800 m; 70 (EJCB) . Louang Namtha: Namtha—Muang Sing; 21°09’N, 101°19’E; 5-1997; alt. 900–1200 m; 1 ♀ (EJCB) . Louangphabang: Muang Ngoy; 20°43’N, 102°41’E; 4-1999; alt. 500 m; 1 ♂ (EJCB) . THAILAND. Mae Hong Son: Ban Huai Po; 19°19’N, 097°59’E; 4, 5-1991; alt. 1600–2000 m; 1 (EJCB) // Ban Si Lang; 19°16’N, 098°01’E; 5-1996; alt. 1200 m; 1 ♀ (NMPC) // Soppong-Pai; 19°27’N, 098°20’E; 5-1993; alt. 1800 m; 1 ♂, 2 ♀ (EJCB) .