<![CDATA[ ABSTRACTBagworms are reported as severe pests in albizia in some areas. The bagworms species that attacked the plant in Java had been identified but had not been described well. Their natural enemies also had not been identified in this area. This information is essential and related to pest control opportunities. This study described several species of bagworm and their natural enemies. It also described the characters of the bag as a marker of the bagworm type. Samples were collected from ten localities spread across Central and West Java. Bagworms pupae were collected and reared so that the imago or natural enemies emerged. The parasitization rate against bagworm pupae was then determined. Imago and natural enemies were morphologically described, as are bags character. Four species of bagworm were associated with albizia stand, namely Pteroma plagiophleps, Chalia javana, Clania crameri, and Khopene cuprea. Description and desk study revealed synonymies among bagworm species. Morphologically, a bagworm species had a unique characteristic bag as a type in shape, pattern, and size. Natural enemies were commonly parasitic Hymenoptera and Diptera insects and entomopathogenic fungi. The bagworm species has been associated with a particular insect of the parasitoid. The many synonyms in the particular species need to be confirmed through a comprehensive depth study involving morphological (imago, bag, and larvae) and molecular approaches to overcome synonymies among bagworm species. ABSTRAK Ulat kantong sebagai hama serius pada sengon di beberapa daerah. Spesies ulat kantong yang menyerang sengon di Pulau Jawa sudah pernah diidentifikasi tetapi belum dideskripsikan dengan baik. Musuh alami ulat kantongnya juga belum pernah diidentifikasi. Informasi ini penting karena terkait peluang pengendaliannya. Tujuan penelitian untuk mendeskripsikan beberapa spesies ulat kantong yang menyerang sengon dan musuh alami yang berasosiasi dengannya serta mendeskripsikan karakter kantong sebagai penanda spesiesnya. Sampel diambil dari sepuluh lokasi yang tersebar di Jawa Tengah dan Jawa Barat. Pupa ulat kantong dikumpulkan, dipelihara, sehingga imago atau musuh alami keluar dan tingkat parasitisasi ditentukan. Imago dan musuh alami dideskripsikan secara morfologi, demikian juga dengan karakter kantongnya. Empat spesies ulat kantong teridentifikasi berasosiasi dengan sengon adalah Pteromaplagiophleps, Chalia javana, Clania crameri, dan Khopene cuprea. Deskripsi dan penelusuran pustaka menunjukkan banyaknya nama sinonim yang terkait spesies-spesies tersebut. Secara morfologi, setiap spesies ulat kantong memiliki karakter kantong yang khas baik bentuk, pola maupun ukurannya. Musuh alami ulat kantong umumnya adalah serangga Hymenoptera dan Diptera serta cendawan entomopatogen. Adanya asosiasi spesies ulat kantong dengan spesies parasitoid tertentu. Banyaknya sinonim pada spesies ulat kantong perlu dikonfirmasi melalui pendekatan yang komprehensif dengan menggabungkan metode berbasis morfologi (imago, kantong, dan larva) sekaligus molekuler. ]]>
