This film shows the tropical members of the insect world, the beautiful and the dangerous. It was filmed at the studio of Curator Raymond L. Ditmars of the New York Zoological Park. It shows first the scarabs of Egypt, then the luminous beetle, which, when tapped gently on the head, sends out a ray of light strong enough to take moving pictures by night with. Mexican women use these luminous beetles as ornaments at parties. Next the cricket is shown at close range and then we see the katydid rubbing its wings together to make the "katydid" noise. These moving pictures of the katydid are very rare and were taken after weeks of the most painstaking "watchful waiting." Then we are shown the amazing walking stick bug, which knows how to fool the birds by striking an attitude like six toothpicks gone astray. The giant centipede, fourteen inches long, when viewed at close range, is an awe-inspiring spectacle, while the giant millipede, with his thousand and one legs, makes the chilly creeps run up and down one's back.
—Moving Picture World synopsis