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Species Thyridopteryx ephemeraeformis - Evergreen Bagworm Moth - Hodges#0457

Evergreen Bagworm Moth pupal case - Thyridopteryx ephemeraeformis Bagworm - Thyridopteryx ephemeraeformis Bagworm - Thyridopteryx ephemeraeformis Larva in stick tent - Thyridopteryx ephemeraeformis Cocoon - Thyridopteryx ephemeraeformis Black moth with clear wings - Thyridopteryx ephemeraeformis - male Thyridopteryx ephemeraeformis Evergreen Bagworm Moth - Thyridopteryx ephemeraeformis
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Tineoidea (Tubeworm, Bagworm, and Clothes Moths)
Family Psychidae (Bagworm Moths)
Subfamily Oiketicinae
Genus Thyridopteryx
Species ephemeraeformis (Evergreen Bagworm Moth - Hodges#0457)
Hodges Number
Synonyms and other taxonomic changes
Thyridopteryx ephemeraeformis (Haworth, 1803)
* phylogenetic sequence #013675
Five Thyridopteryx species are found in America north of Mexico
Wingspan 17-36 mm (1)
Bags may grow to 50 mm (2)
Massachusetts south to Florida and west to Nebraska, Colorado, and New Mexico. (1)
Moth Photographers Group - large range map with collection dates.
Larval cases (bags) are found attached to their foodplants.
Flies August to October. (1)
Various trees, shrubs and herbaceous plants. A pest of red cedar. (1)
Life Cycle
Larvae drag around their cases while feeding. When ready to pupate they attach the cases with silk to a branch. Males squeeze their way out, often losing much of their wing scales in the process. They seek wingless, legless females who never leave their bags. The males insert their abdomen to mate, and the females lay their eggs inside their own cases. Eggs overwinter and after hatching they disperse and begin forming their own bags.
Predators include the common Ichneumon wasp Itoplectis conquisitor
Print References
Covell, page 450, bag pictured on plate 2 (#3), male on plate 62 (#33) (1)
Davis, D. R. 1964. Bagworm moths of the Western Hemisphere (Lepidoptera: Psychidae). USNM Bulletin 244: 134
Wright, illustrations of bag and male (2)
Internet References
Various photos at Forestry Images.
Photo of adult male from the Clemson Arthropod collection.
Factsheet from PennState Cooperative Extension
Info from Texas Cooperative Extension
Works Cited
1.Peterson Field Guides: Eastern Moths
Charles V. Covell. 1984. Houghton Mifflin Company.
2.Peterson First Guide to Caterpillars of North America
Amy Bartlett Wright. 1998. Houghton Mifflin Company.