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Details - ©Nicky Davis Todd Stout found female May 16, 2007, at 4200 feet. I-215 and 2200 North offramp, Salt Lake County, Utah.Ova eclosed May 20, 2007 and were then set on Brassica nigra to feed. Photos of butterfly that emerged from Pupa #1 Host For photos of plant used to feed the Pontia occidentalis larvae, click on Black Mustard== Brassica nigra Back to Top |