American Dagger Moth Caterpillar

Subject:  Spider & Caterpillar
Geographic location of the bug:  SE MN
Date: 09/27/2017
Time: 10:17 PM EDT
I find th spider on my front door last week, summer like temps, 75° F @ 7:45 am. It was about the size of a Kennedy Half Dollar, I got my neighbor to relocate it off my door.
The caterpillar I  found  outside at work about 2  years ago,  late August  early September,  moderate  summer temps.  It was too neat and pretty to not take a  picture of.
I don’t have any idea what kind either of them are.
How you want your letter signed:  Jane

American Dagger Moth Caterpillar

Dear Jane,
Your caterpillar is an American Dagger Moth Caterpillar and you can verify our identification by comparing your image to this BugGuide image.  According to BugGuide:  “Larvae feed on leaves of alder, ash, birch, elm, hickory, maple, oak, poplar, walnut, willow and other deciduous trees” and “The caterpillar’s hairs can cause skin irritation.”  Your spider is a harmless Banded Orbweaver.

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