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Insect case/cocoon - Apterona helicoidella

Insect case/cocoon - Apterona helicoidella
Toronto, Ontario, Canada
April 10, 2008
Size: approx 7-8mm diameter
Dozens of these found on the south and west side of a building in a natural area of primarily sandy soils and cottonwood and birch trees.

now Apterona helicoidella
Now treated as Apterona helicoidella.(1)(2) See "Remarks" on Info page here.

Snailcase bagworm.
Nice shot of a snailcase bagworm, Apterona helix, family Psychidae. There is a caterpillar in there:-) For more information, please see online "fact sheets" at .edu websites that discuss this insect.

My first thought was moth but I couldn't turn up anything when I searched. I appreciate your help!

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