The blood-sucking conenose assassin bug (Triatoma sanguisuga). It feeds on human blood and is the vector of the protozoan parasite Trypanosoma cruzi, which causes Chagas disease. The protozoa are present in the feces of the bug and are transmitted to humans when they enter wounds on the skin made by the feeding bug. They may also enter via the nose and mouth. T. cruzi migrates to the heart muscles and central nervous system, causing serious inflammation and lesions which may prove fatal if left untreated.