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Today’s Promethea Cocoon Post

I mistakenly wrote Cecropia instead of Promethea in the last line describing the host plants that Promethea caterpillars eat and make their cocoons on. My apologies for the confusion!

4-22-14  promethea cocoon 478When a Promethea Moth caterpillar, one of our giant silk moths, is ready to pupate at the end of the summer, it strengthens the stem, or petiole, of a leaf on its host plant with silk and then attaches the silk to a nearby branch, assuring that the leaf will remain attached to the tree. (Imagine having the instinctive foresight in your youth that this caterpillar had!) The caterpillar then curls the leaf around itself and spins its cocoon inside the curled leaf. The cocoon dangles from the host plant throughout the winter and in early summer the moth emerges. Now is the perfect time for finding a Promethea Moth cocoon, as last year’s leaves are gone on most trees, and this year’s buds have yet to open. Look for a tree or shrub that has just one dead leaf hanging from one of its branches. (Promethea caterpillars favor black cherry, poplar, ash, maple, oak and willow leaves, among others.)

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One response

  1. Dianne and Ed

    Of course you are forgiven, Dianne

    April 24, 2014 at 10:12 pm

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