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Photo#29523
Bagworm Larva (Thyridopteryx ephemeraeformis) - Thyridopteryx ephemeraeformis

Bagworm Larva (Thyridopteryx ephemeraeformis) - Thyridopteryx ephemeraeformis
Faifax City, Fairfax County, Virginia, USA
August 25, 2005
Size: ~4" long
Quite the sight on my front porch! Higher res. version can be found here http://www.nothoo.com/pics/CrazyCaterpillar.jpg

Wow
That is quite the formidable looking bag, most others dont look as painful

Bag Worm
This looks like a bag worm (Thyridopteryx ephemeraeformis) in the larval stage (it's actually a moth). They are often found attached to the outer branches of trees (especially junipers, pines, cedars, hemlocks). It is capable of severe infestations, and destroying groves of trees. Females (which are wingless) remain in the bag, whereas the males leave to go find a mate starting about this time of year (late August to mid-October)...

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