Mitoura rosneri

Mitoura rosneri, the Rosner's hairstreak, is a butterfly of the family Lycaenidae. It is found in western North America in British Columbia. and Washington state. Subspecies C. r. plicataria is known as Barry's hairstreak.

The wingspan is 21 –.

The larvae of subspecies M. r. rosneri feed on western red cedar (Thuja plicata), while the larvae of subspecies M. r. plicataria feed on Rocky Mountain juniper (Juniperus scopulorum).

Subspecies

 * M. r. rosneriRosner's hairstreak (interior ranges of British Columbia)
 * M. r. plicataria Johnson, 1976Barry's hairstreak (Vancouver Island and Coast Range of British Columbia, Washington)

Taxonomy
Both M. r. rosneri and M. r. plicataria are often treated as subspecies of Callophrys gryneus. Callophrys barryi is a synonym of C. r. plicataria.