National Geographic : 2010 Jun
Creatures of the Night When the sun sets in the Fojas, hundreds of species of rain forest inhabi- tants emerge in the dark to take the place of those retiring for the night. As Indonesian entomologist Hari Sutrisno demonstrates (right, top), a couple of lightbulbs and a sheet are enough to attract scores of moths of staggering diversity. (A small sampling, each with about a one-inch wing- span, is shown above.) Night, especially during gentle rain, is also the best time to find frogs, located by their frequent calls and by the silvery shine of their eyes in a flashlight beam. (Specimens at right are in the one-to-three- inch range.) New Guinea is home to around 350 frog species; an equal number may be awaiting discovery on the island, which remains among the world's least known regions.