National Geographic : 1983 Jan
disintegrating. Built of wood pulp, the nest hangs from a tree and attracts some prudent katydids (above left). They stay close during the day, Teeming Life of a Rain Forest probably to gain refuge from foes that shun the wasps. Over the stalk that attaches the nest to the branch, the wasps have smeared a black secretion (left) that repels some ants. Other species, however, stand ready to attack the nest and devour the developing wasps within.