. Although the caterpillar has a flattened shape, a raised ridge in the middle means it is not completely flat. We do not ask clients to reference us in the papers we write for them. Education touchENDOCRINOLOGY from www.touchendocrinology.com When applied in successive layers, these four ink colors create a full color image. These are static pictures, so be careful. A pale green caterpillar with a flattened shape and venomous spines sticking out around its edge.