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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Butterflies and Moths (Lepidoptera) » Silkworm, Sphinx, and Royal Moths (Bombycoidea) » Giant Silkworm and Royal Moths (Saturniidae)
Photo#598117
cocoon
Copyright © 2011 Joan Rickert

cocoon
Medford, Taylor County, Wisconsin, USA
November 13, 2011
Size: 1" long by 3/4" wide
Found this cocoon in a juniper shrub in my yard. It was attached to the tips of two twigs about a foot from the ground. At first I thought it was a Polyphemus cocoon but it is too small. Many hardwood trees, hemlocks and balsam surrounding the juniper shrub.

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cocoon cocoon
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Contributed by Joan Rickert on 28 November, 2011 - 7:27pm
Last updated 15 December, 2011 - 10:04am

Moved
Moved from ID Request.
Moved tentatively to Saturniidae, to get some other opinions... I've seen some surprisingly small saturniid cocoons, and they may look pretty different when incorporating juniper foliage rather than leaves from broad-leaved trees.
… Charley Eiseman, 13 December, 2011 - 11:17am login or register to post comments

 
cocoon
Thanks Charley. Perhaps the caterpillar ate less favorable or unsuitable host plant. I think you are right as that was my first impression. I'll send pictures of the moth next spring so we all know for sure the id.
… Joan Rickert, 14 December, 2011 - 3:15pm login or register to post comments

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