What type of grasshopper was the old green grasshopper in the James and the Giant Peach in the book?

In "James and the Giant Peach" by Roald Dahl, the old green grasshopper is depicted as a character named simply "Grasshopper." He is characterized as wise and knowledgeable, serving as a mentor figure among the group of insects. Grasshopper is portrayed as an anthropomorphic creature with a love for music and storytelling, contributing to the whimsical nature of the story.