What's That Bug? does not endorse extermination

My daughter found these cocoon like pods next door to my house. There where many pods (15 in all) around the pine tree and on the pine tree that looked very natural. I’m unable to tell her what they are. Can you please help in identifying the ponds.
Brooklyn N.Y.
Michael Caputo & Kids

Dear Michael,
You have Bagworms, Thyridopteryx ephemeraeformis. They are common but rarely become serious pests. According to The Golden Guide Insect book, "their history is strange. The wingless and legless female, after mating, crawls back into her ‘bag’ and lays hundreds of yellow eggs, which hatch in spring. The young larvae feed on leaves of many kinds of trees, building their conical bags as they feed. Later they bind their bags to twigs (or in your case the brick wall) and pupate. The male emerges, seeks the female, and mates." We have a Bagworm page with additional information.


Bagworm
Dear What’s That Bug,
My girlfriend and I are stumped on identifying a bug, or more accurately, a cocoon that has latched on to the outside of her home in central Texas. 3 weeks ago this creature was partially out of its shell, and dragging this strange looking cocoon along with him. He then preceded to pull himself up a brick wall, and has been there without sign of life for 3 weeks now.
Can you help identify this strange looking creature?
Thanks,
Chris

Dear Mister Chris,
I appologize for the delay in your answer, but the photo was lost in the bowels of American Homebody while America’s Sweetheart was in Miami. I just received the image. You have a bagworm, Thyridopteryx ephemeraeformis. The exact composition of the bag is dependant upon the host plant which can be any number of deciduous trees as well as the preferred coniferous trees. Juniper is a particular favorite. I have located some information on www.ianr.unl.edu for you. Bagworms feed on shade, orchard, and forest trees of nearly every kind, as well as many ornamental shrubs and perennials. Severe attacks are unusual. Since deciduous plants grow new leaves, damage to them is usually not serious. The growth of small or newly planted trees, however, could be slowed by leaf feeding. Newly hatched larvae begin to spin silken bags around themselves shortly after hatching. The first evidence of infestation is the presence of 1/4 inch bags which are carried almost on end by the young caterpillars inside. As larvae grow, leaf fragments are added to the bag, which may reach a length of 2 inches by the end of summer. The adult female moth is wingless and never leaves the bag. Adult males are small, grey moths with clear wings. Bagworms overwinter in the egg stage inside female bags fastened to twigs. Eggs hatch in late May and early June, and larvae feed until late August or early September. Males emerge in September and mate with females through the bag entrance. You can also check out this website www.ag.auburn.edu which has some great photos of the bagworm.

What's That Bug? does not endorse extermination

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