Carebara castanea valid China (Hong Kong). Indomalaya.
Smith, F. 1858a. Catalogue of hymenopterous insects in the collection of the British Museum. Part VI. Formicidae. London: British Museum, 216 pp.   128685

Carebara castanea augustata valid Laos. Indomalaya.
Santschi, F. 1920h. Fourmis d'Indo-Chine. Annales de la Société Entomologique de Belgique 60:158-176.   128326