File photo taken on Aug. 23, 2017 shows a giant mosquito with a body length of nearly 5 centimeters is shown at the Insect Museum of West China in Chengdu, capital of SW China's Sichuan Province, . The mosquito belongs to the world's largest mosquito species Holorusia mikado, which normally have a wing span of about eight centimeters. The mosquito was found in August, 2017 during a field trip to Mount Qingcheng in Chengdu. (Xinhua/Insect Museum of West China)