Beneath Ceaseless Skies - Day of the Dragonfly by Raphael Ordoñez
With a shout Keftu took two mighty bounds and leaped into the air. He kicked his legs, spreading wide the wings that had been hidden in their case at his back. They were like insect wings, with veins of carved bone and membranes of golden resin, and he drove their gear box with chains linked to his greaves. "What do you think you're doing?" Yani cried.