Upper Klamath River, Klamath Co, May 29

Cedar 

Hairstreak

Callophrys gryneus

Size: 1.0 - 1.25 inches wingspan

Key ID features:  Found near cedar or juniper trees. Above, gray-brown or reddish brown, sometimes with redder patches near tails.  Below, shades of brown, gray, and violet, with white postmedian line that varies from bold to nearly absent. Blue submarginal ("thecla") patches near tails vary in size and brightness, but usually lacking orange. 

Similar species: Johnson's Hairstreak is darker shade of brown, postmedian white line is bolder with a more pronounced "M" on the HW, and generally only found in and near old growth forest.

 

Host plant: Western redcedar (Thuja plicata), incense cedar (Calocedrus decurrens) and western juniper (Juniperus occidentalis).

Habitat: Roadsides, meadows, riparian zones, forest edges and clearings near the host plant. 

Range: Most of Oregon, but missing from most of Coast Range, Blue Mtns, Wallowas and Malheur County.

Season: Late March to early August

Abundance: Abundant

 

Conservation Status: Secure

© 2018-20 by Neil Henning Björklund