Earlier this month, local villagers in the outer reaches of Chengdu, China's Sichuan province, have returned a Dobsonfly. The insect having eight inches wing span and massive snake-like fangs is the world's largest flying aquatic insect.
Previously, the largest known aquatic insect was the South American helicopter damselfly. It had a wingspan measuring 7.5 inches. The Insect Museum of West China said they have examined many of these critters.