“…Triatomines can detect infrared radiation (Lazzari and Núñez, 1989;Schmitz et al, 2000;Zopf et al, 2014aZopf et al, , 2014b and the response is triggered when there is contrast between the source of heat and ambient temperatures (i.e., bugs only respond to stimuli from objects at host's temperature, 30-35°C, provided that the environment is colder than the object; Ferreira et al, 2007;Fresquet and Lazzari, 2011). Heat receptors in triatomines are concentrated on the antennae, but are also present in different regions of the body (Insausti et al, 1999;Lazzari and Wicklein, 1994;Zopf et al, 2014aZopf et al, , 2014b.…”