• Combination in Crematogaster (Orthocrema): Emery, 1922c: 132; Blaimer, 2012c: 55.
• Status as species: Emery, 1922c: 132; Menozzi, 1935a: 114 (in key); Chapman & Capco, 1951: 99; Bolton, 1995b: 164; Hosoishi & Ogata, 2016a: 601.

Obsolete combinations

• Crematogaster sordidula udo

Citations

• Blaimer, B. B. 2012c. A subgeneric revision of Crematogaster and discussion of regional species-groups (Hymenoptera: Formicidae). Zootaxa 3482:47-67. PDF
• Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp.
• Chapman, J. W.; Capco, S. R. 1951. Check list of the ants (Hymenoptera: Formicidae) of Asia. Monographs of the Institute of Science and Technology. Manila 1:1-327. PDF
• Emery, C. 1922c. Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [part]. Genera Insectorum 174B:95-206. PDF
• Forel, A. 1905f. Ameisen aus Java. Gesammelt von Prof. Karl Kraepelin 1904. Mitteilungen aus dem Naturhistorischen Museum in Hamburg 22:1-26. PDF
• Hosoishi, S.; Ogata, K. 2016a. Systematics and biogeography of the ant genus Crematogaster Lund subgenus Orthocrema Santschi in Asia (Hymenoptera: Formicidae). Zoological Journal of the Linnean Society 176:547-606. 10.1111/zoj.12330 PDF
• Menozzi, C. 1935a. Formiche indo-australiane del genere Crematogaster Lund raccolte da W. Karawaiew. Konowia 14:103-116. PDF