Banded Hairstreak

Satyrium calanus
Hairstreaks and Elfins

Appearance: Tailed. Below, brownish to dark gray. Outerside of post median band usually capped with white. Blue tail spot usually not capped with orange. Essentially an eastern species, but found uncommonly in Colorado foothills and mountains. Those found in Colorado tend to be more whitish gray below.

Size: Small; 15/16 to 1 3/16 inches

Habitat: Gambel oak and bur oak groves along stream courses

Season: June through early August; 1 brood

Larval Foodplant: Gambel and bur oak, and hickories

Did You Know…
There is a Rocky Mountain population isolated from the common and widespread Eastern population.

Species Gallery (click to enlarge)