Transactions of the Entomological Society of London. London, The Society, Entomology, Periodicals, Insect, This illustration features a detailed anatomical study of the pupal case of the species *Liatrioma orbitulus*. The upper section presents a close-up view of the ventral abdominal segments, labeled (1), highlighting their structure from segments 5 to 9. The lower section, labeled (2), displays the terminal segments of the pupal case, emphasizing the cremasterial hooks at segment 9, which are critical for attachment during the pupal stage. The intricate textures and features of the pupal structure are depicted for educational and scientific analysis, revealing the complexity of insect development.