Parasitic ants parasitize ... abdomens (i.e., gasters) and long tarsal claws which enable them to grip onto the host queens and ride their backs as ectoparasites (Hölldobler & Wilson 1990).

Edward O. Wilson, who taught at Harvard for 46 years, was one of the world's leading experts on biodiversity. He died on Sunday in Burlington, Mass., at age 92. Edward O. Wilson, pictured above ...