During molts and pupation, caterpillars seal the bags. Dispersal of bagworms to new host plants occurs when young caterpillars hanging from silken threads are spread by wind or perhaps by birds. Bags can be removed from host plants by hand. During the winter months, bags contain remains of female moths and eggs produced by them. During the late spring and summer, bags will contain caterpillars that can be removed.
Males are best reared from bags after caterpillars pupate.
Males can also be attracted to lights. Several species occur in the state. For additional information, contact your local Texas extension service agent, or search for other state extension service offices.