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Black Caterpillar Yellow Stripes - Datana

Black Caterpillar Yellow Stripes - Datana
Signal Hill Park Manassas, Prince William County, Virginia, USA
September 17, 2010
I assume the raised front and back is some sort of defensive position for this caterpillar?

Moved from Prominent Moths.

Moved from ID Request.

Looks like ...
Datana sp. More info here An expert may be able to help ID further. You are correct, this is a typical defensive posture.

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