Triatoma sanguisuga, also known as the Eastern Bloodsucking Conenose or the Mexican Bed Bug, is an insect of the Triatominae subfamily, known as kissing bugs. Like other species in this subfamily, T. sanguisuga is known to bite and feed off of humans at the mouth during sleep. This bite is painful and can cause adverse effects such as swelling, feelings of faintness, nausea, and vomiting.