Ctenomorpha chronus is a large stick insect. Males are fully winged and can fly, while females are much larger with reduced wings. The wings are small and black with green leading edge. The head, prothorax (first segment of the thorax) and legs are light pinkish brown. The mesothorax (middle section of thorax) and abdomen are blackish green. The mesothorax has small black tubercles. The abdomen has black spots at the tip of each segment. The cerci at the tip of the abdomen are prominent.