Information is reviewed on the biology of ants found in Chile published in national and foreign scientific journals during the period 1900-1999. The information is evaluated in terms of (i) temporal dynamics of publication production, (ii) main themes of study, and (Iii) formicid groups in which the investigation has been concentrated. The collected data show that in the decade the 60's, the number of articles on ants grew, reaching a peack during the 90's. The main topics of investigation have been, in decreasing order, aspects of taxonomy, habitat use, periods of activity, trofic behavior and inter-individuals recognition. The formicid groups in which these studies have been focused correspond to Camponotus, Solenopsis, Pogonomyrmex, Brachymyrmex, Conomyrma and Linepithema. These results are discussed in the light of historical events that may have determined the course of research. Finally, future lines of investigation for the studies of ants in Chile are proposed.