AdultStella's Orangetips are small white (males) or yellow (almost all females) butterflies with orange wing tips. In males, the middle of the black bar across the base of the orange wing tip is displaced towards the wing tip, rather than connecting smoothly with the black rectangle at the end of the discal cell. This black bar usually fades to grey in the middle. The ventral hindwing marbling is yellow green, and usually appears smudged. In populations along the eastern side of the Cascades, the black bar is more strongly developed, at first looking similar to that in Sara's Orangetip. The bend in the bar is still present, however, although less obvious because of its increased width, and the ventral markings are still typical of Stella's Orangetip. Occasional males or females have a row of black spots along the margin of the upperside of the hindwing.
SubspeciesThe nominate subspecies occurs in BC (TL: Marlette Peak, Washoe Co., NV).