Comparison of survival rates and weights of Zhejiang H. cunea larvae after being fed different diets; (A) the transmission path of the H. cunea in China [23]; (B) larvae survival rates over a 15 days period on different diets; (C) analysis of the difference in the number of surviving larvae over 15 days on different diets; (D) analysis of the difference in larval weight over a 15 days period on different diets.