To determine if 4th-instar Toxorhynchites rutilus rutilus (Coquillett) preferentially consumes one stage of Aedes aegypti (L.), equal numbers of 1st-instar, 4th-instar, and pupae prey were placed in 3.78-liter containers with one 4th-instar predator. Predators ate significantly more 4th-instar prey than pupae or 1st instars; but they killed, without eating, significantly more pupae than 4th instars, with no 1st-instar killing observed.