Whitefaces Are Not All Herefords
The species in the photograph is an immature female Dot-tailed Whiteface (Leucorrhinia intacta.) She was flying in an upland meadow filled with grasses and flowering Balsamroot (Balsamorhiza sagittata.) There were no ponds close by but these dragonflies are good fliers and often move well away from wetlands. She looks similar to another common species known as the Hudsonian Whiteface (L. hudsonica,) but provincial expert Dr. Rob Cannings felt confident that my photo depicted L. intacta, even though he was unable to study some clinching features in hand.
Note the dark abdomen with brighter yellow markings on the dorsal surface with a wider one at the outer end. The yellowish suffusion at the base of the wings suggests that this is an immature female. Her brown eyes contrast with the white face.