These flies, mutucas, suck your blood and leave you with intense itching at the point of their bite, along with respectable welts if your skin is very sensitive, as mine is. You must not hate the mutucas, though, nor even the various types of horseflies that bite and welt the tender skin of your inner thigh, your outer ear, your cheeks, and your ass. You must not hate them even when you notice their deviousness—always flying to shaded parts of the body—exactly those parts you are not paying any attention to. Why not hate them? Because the frustration will kill you faster than the bug bites.