Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Photo#65654
Caterpillar ID - Heterocampa umbrata

Caterpillar ID - Heterocampa umbrata
Ames, Story County, Iowa, USA
Found in soybean.

Moved

One of the Prominents - Notodontidae
It has the face and body pattern of the White-blotched, Heterocampa umbrata. The pink probably indicates it is fully mature and looking for a place to pupate. Images in the guide here

 
Either that...
or it's sick/parasitized and dieing.