Abstract Scale insects (Hemiptera: Coccomorpha) that feed on roots are considered of economic importance in crops such as coffee. Although noteworthy developments on the knowledge about the alpha taxonomy of such insects exist, more information concerning their diversity is necessary. The aim of this study was to update the list of scale insect species found on coffee roots in Colombia as well as to recognize their trophobiotic ants. Field trips were carried out in nine Colombian departments, where 541 samples were