AdvertisementDrug For 'Neglected' Chagas Disease Gains FDA Approval Amid Price WorriesSeptember 10, 2017Courtney ColumbusfacebookEmailThe blood-sucking conenose assassin bug (Triatoma sanguisuga) is also called a "kissing bug" because of its tendency to bite human faces. It feeds on human blood and is the vector of the parasite Trypanosoma cruzi, which causes Chagas disease. (Ray Coleman/Science Source)