Internal structure reveals lateral lobes containing muscles (IMAGE) Ehime University Caption Internal structure of the abdominal segment, in cross-section, has revealed that lateral lobes contain muscles (arrowheads), whereas dorsal and ventral lobes are simple thick cuticles. The muscles in the lateral lobes may assist larval locomotion when crawling on wet substrates (e.g. moss carpets). Credit Yume Imada, Ehime University Usage Restrictions Please get copyright permission License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.