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Thyridopteryx
bagworm moths
Thyridopteryx is a genus of bagworm moths (Psychidae) comprising five described species. The genus is best known for T. ephemeraeformis, the evergreen bagworm or North American bagworm, a significant pest of ornamental and landscape plants. Larvae construct protective cases from silk and plant fragments, which they carry throughout their development. The genus exhibits unusual sexual dimorphism: males are winged and capable of flight, while females are wingless and remain within their cases for life.