👉 Leafworms are small, round-shaped worms that can be found in various environments. They have a black or brown coloration and can grow up to 4 inches (10 cm) long. Leafworms feed on plants by secreting a chemical called murexine, which is used as an insecticide. They also release a toxic substance called phloem fluid, which can cause harm to other organisms. Leafworts are known for their ability to form symbiotic relationships