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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Butterflies and Moths (Lepidoptera) » Ermine Moths and kin (Yponomeutoidea) » Ermine Moths (Yponomeutidae) » Yponomeutinae » Yponomeuta
Photo#939410
What will this turn into? - Yponomeuta
Copyright © 2014 vvincent

What will this turn into? - Yponomeuta
Racine, Racine County, Wisconsin, USA
June 16, 2014
Size: 1/2 inch
Found a host of webs in a hosta plant and fence. There are thousands of what looks like eggs and many of these caterpillars. Wondering what these will turn into.
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Contributed by vvincent on 16 June, 2014 - 7:11pm
Last updated 30 June, 2014 - 5:45am

Moved
Moved from ID Request.
… Charley Eiseman, 30 June, 2014 - 5:45am login or register to post comments

Yponomeuta
John is right. This is Yponomeuta sp. (Yponomeutidae). The larvae will come off of the host plant to spin their cocoons (the hosta has nothing to do with the larval feeding cycle; it is just being used as a place to go to pupate, after the larvae have finished feeding). I believe that the thousands of "egg-like" items that you are seeing are the cocoons of this species. As to the actual host plant, the larva in your photo is one of two spp., both introduced from the Palearctic, one of which, Y. cagnagella, eats burning bush (Euonymus), and the other of which, Y. malinellus, eats apple (Malus). They are very similar and thus hard to tell apart, the easiest way to do this being to locate the plant that they were actually eating, and the identity of the plant will give you the ID of the bug.
… Terry Harrison, 17 June, 2014 - 9:03am login or register to post comments

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… John Schneider, 16 June, 2014 - 7:30pm login or register to post comments

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