Polyrhachis quadrispinosa Jaitrong & Noon-Anant, 2023: 305, figs. 1A, 7, 8, 10 (w.q.) THAILAND. Indomalaya.

Primary type information: Primary type material: holotype worker. Primary type locality: Thailand: Trang Province, Palian District, Ban Li Phang, near Khai Ting Cave, rubber tree plantation, 7º9′35′′N, 99º48′01′′E, 19.v.2022, TH22-WJT-155 (W. Jaitrong). Primary type depository: THNHM. Primary type specimen: THNHM-I-00027172. Secondary type information: Secondary type material: 15 paratype workers, 1 paratype queen. Secondary type locality: same as for holotype. Secondary type depositories: SKYC, THNHM. Secondary type specimens: THNHM-I-00027173 to THNHM-I-00027183, THNHM-I-00027185, THNHM-I-00027186, THNHMI-00027187, THNHM-I-00027188 (queen), SKY190522-1.