Plagiolepis silpaarchai Phosrithong & Jaitrong, 2024: 7, figs. 4, 6-8 (w.) THAILAND. Indomalaya.

Primary type information: Primary type material: holotype worker. Primary type locality: Thailand: Kamphaeng Phet Province, Kosamphi Nakhon District, Ban Kosomphi, Khlong Wang Chao National Park, mixed deciduous forest, 16°30'16'' N, 99°10'05'' E, 18.xi.2021 (no collector’s name). Primary type depository: THNHM. Primary type specimen: THNHM-I-27222. Secondary type information: Secondary type material: 16 paratype workers. Secondary type locality: same as for holotype. Secondary type depository: THNHM. Secondary type specimens: THNHM-I-27223 to THNHM-I-27238.