© 2018-19 by Neil Henning Björklund

Larch Mtn, Multnomah Co, June 19

Johnson's

Hairstreak

Callophrys johnsoni

Size: 1.25 - 1.5 inches wingspan

Key ID features:  Above both sexes brown.  Below chocolate brown. Long tails on HW. White median line containing flattened "W" near white-tipped tails, and submarginal row of black spots (sometimes vague) along half of trailing margin of HW.

Similar species: Thicket HS has more prominent "W" in white median line, is blue above, and submarginal spots on HW below run entire length of trailing margin.

 

Host plant: Dwarf mistletoes that grow on Western Hemlock and Grand fir (in the Cascade Range) and on Ponderosa Pine (in the Blue Mountains). 

Habitat: Clearings in old growth coniferous forest (Ponderosa pine, Douglas-fir, western hemlock, grand fir). 

Range: Cascade Range, Siskiyou Mtns, and in the Blue Mtns in Baker and Union counties.

Season: Mid-May to early September

Abundance: Uncommon

 

Conservation Status: Oregon State Species of Concern