Fig. 2

Camouflaged nymph of Mepraia spinolai (left). This natural behavior is performed by small, medium, and large-sized nymphs (0.4-1.5 cm length) of all Mepraia species when the appropriate substrate is provided. Adult female of Mepraia gajardoi with a feces droplet (right). Defecation usually occurs during or right after a blood meal, potentially resulting in Trypanosoma cruzi transmission through self-inoculation. Photographs by Rodrigo Medel and Vicente Valdés, respectively