Giant dobsonfly with 21 centimeter ( 8.27 inch ) wingspan found in Sichuan for the first time . The giant dobsonfly makes its home in bodies of clean water and is highly sensitive to any changes in the water 's pH as well as the presence of trace elements of pollutants . This may be the world 's largest aquatic flying insect . Comment:
Giant dobsonfly with 21 centimeter ( 8.27 inch ) wingspan found in Sichuan for the first time . This may be the world 's largest aquatic flying insect . Comment: