Syscia chaladthanyakiji Jaitrong et al., 2020: 3, figs. 1-6, 11 (w.q.) THAILAND. Indomalaya.

Primary type information: Primary type material: holotype worker. Primary type locality: Thailand: Tak Prov., Umphang Dist., Thung Yai Wildlife Sanctuary, Kangae Ki, Head Quarter, 26.ii.2016, colony no. TH16-WJT-0145 (W. Jaitrong). Primary type depository: THNHM. Primary type specimen: THNHM-I-05483. Secondary type information: Secondary type material: 29 paratype workers. Secondary type locality: 20 paratype workers with same data as holotype; 9 paratype workers with same data as holotype but TH16-SKY-113 (Sk. Yamane). Secondary type depositories: MHNG, SKYC, THNHM. Secondary type specimens: THNHM-I-05484, THNHM-I- 19536 to THNHM-I-19551, THNHM-I-20300 to THNHM-I-20302.