from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Any of several moths of the family Psychidae, which construct fibrous cases of silk spun together with leaves, twigs, or grass. The plant-feeding larvae and wingless adult females live in these cases.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A member of the family Psychidae of the Lepidoptera.
  • n. Eastern tent caterpillar.
  • n. Fall webworm.

from the GNU version of the Collaborative International Dictionary of English

  • n. One of several lepidopterous insects which construct, in the larval state, a baglike case which they carry about for protection. One species (Platœceticus Gloveri) feeds on the orange tree. See basket worm.

from The Century Dictionary and Cyclopedia

  • n. The larva of a lepidopterous insect, Thyridopteryx ephemeræ-formis (Harris), common throughout the more northern part of the United States.


bag +‎ worm. (Wiktionary)


  • The bagworm is a perennial insect pest of arborvitae, juniper, pine and many other evergreen species.

    The Daily News - News

  • I was driving to the kids school Friday in a really good mood and i rounded this corner and i saw the sun shimmering down on the grass and i just thought "wow the world just glows, it is luminescent" and then i realized the sun was reflecting off of these silkworm threads that literally covered the grass, and a bagworm had completely surrounded this ginormous oak.

    Archive 2007-03-01

  • Eumeta fuscescens (Pepper bagworm) solanaceous crops

    Chapter 7

  • An undetermined species of bagworm sometimes causes severe defoliation in Sabah, but trees quickly recover.

    Chapter 6

  • A: After a homeowner first takes serious notice of a bagworm, they are not likely to confuse this insect with another living thing.

    The Daily News - News

  • The spread of the bagworm is slow since adult females are unable to fly.

    The Daily News - News

  • Ankeny residents have reported to the city an increasing population of the bagworm, a caterpillar that is a pest to trees. - NEWS

  • Sounding the arrival of the bagworm, Flickr user and aspiring helminthologist volcanojw recently spent a prolonged period observing and documenting the larva peeking out of its shell.


  • There’s also the agromyzid vegetable leafminer, the poinciana looper, the banana skipper, the Egyptian hibiscus mealybug, the chrysomelid cucumber beetle, several species of eumenid wasp, a nititulid beetle, a magarodid, a psyllid, a bagworm—even the names are strange.

    The Song of The Dodo

  • Regarding the "case bearing moth larva" posted 04 / 10 / 2007); you might want to add that these insects also go by the names "household casebearer" and "plaster bagworm."

    What's That Bug?

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