The Web of Fire — Steve Voake

After he thwarted the Vermian ruler Odoursin's plans to wipe out humans on earth, Sam Palmer thought he could relax. But four years later, Sam and Skipper are called upon once again to help their friends in Aurobon fight Odoursin and what might be the fiercest insect army imaginable, including robber flies so vicious they all but annihilate the Rebellion's squadron of fighter wasps. Their mission becomes heart-stoppingly urgent when they discover that Odoursin is plotting to destroy humankind, this time by using the President of the United States as a pawn. An action-packed adventure of good versus evil, wisdom and preservation versus greed, and bursting with danger, heroism and ferocious insects, this is the explosive sequel readers have been waiting for.