Dermatological diseases caused by scabies mites of the genus sarcoptes, psoroptes, chorioptes and demodex in horses are scarce in Colombia. The objective of the present study was to identify the four genera of scabies mites most common in horses inhabiting piedmont and flooded savanna region of Arauca department. They were sampled (9 males and 13 females) on a piedmont farm, and 10 males on a flooded savanna farm. Cutaneous scrapings were performed in allo- cecic regions present in the animals. The samples were transferred to the diagnostic laboratory of the Clinic of Small Animals Company of the Cooperative University of Colombia Arauca headquarters for their respective analysis. Samples were observed under light microscopy using 10X, 20X and 40X lenses. All samples were negative for the presence of scabies mites. Dermatological diseases in equine mites are not very common in treated areas, this is due to the use of macrocyclic lactones such as deworms, the environment, feeding and management. In the microscopic study spores of fungi in ectotrix position could be observed. It is recommended to continue the research for the identification of pathogens causal to skin problems in domestic horses.