1. The caudal end of the digestive tract is closed. 2. The caudal end is slightly down-curved. 3. The cover only encloses the caudal end of case, which is down-curved. 4. The caudal end curves downward gradually. 5. They create a silky case, which is broader anteriorly and gradually attenuating toward the caudal end . 6. The caudal end of the case is slightly down-curved, but is sometimes almost straight. 7. There is a small tube at the caudal end of the case through which frass is ejected. 8. The valve is three-sided and constructed after discarding fruits at the caudal end of the case. 9. The initial case has the form of a slender tube and is located on the upper side at the caudal end . 10. The cranial end of the larvae has two sharply curved hooks, generally dark in color, and distinctive spiracle patterns are observed at the caudal end .
