© 2018-20 by Neil Henning Björklund

Plunkett Cr, Benton Co, July 31

Mustard White

Pieris marginalis   

AKA Margined White

Size: 1.25 - 1.5 inches wingspan

Key ID features:  Above milky-white, with black shading basally (near the thorax).  Below, hindwing veins faintly lined with brownish back bands.  Summer brood males usually nearly pure white.

Similar species:  Cabbage White has black spot in center of FW.

 

Host plant: Cresses, toothworts and other mustard species.

Habitat: Openings in moist forests, usually coniferous.

Range: Throughout western Oregon west of the Cascades, and in Ochoco, Wallowa  Blue, and Warner Mtns.

Season: Late March to early October

Abundance: Common

 

Conservation Status: Secure