Especially in the subspecies T. u. cerinus, the body is often entirely red, with yellow, dark-margined wings.

[3] It is found in Southern California, including the northern Baja California and the Channel Islands, north to the Okanagan Valley, southern British Columbia, eastwards through southwestern Idaho to western South Dakota and northern Utah.

Females have been captured at honeydew from galls of Disholcapsis eldoradensis on Quercus lobata and at flowers of Asclepias erosa, Baccharis sarothroides, Chrysothamnus sp., Lepidospartum squamatum, and Wislizenia refracta.

Males have been taken on the flowers of Calochortus catalinae, Hemizonia fasciculata, Rhamnus californica, and Xanthium spinosum.

[3] The flight period in California is from May to October, with a peak in July and August.