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Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Silver-spotted Skipper butterfly. Gallery Next Kinney Creek Rd, Jackson Co, May 29 Silver-spotted Skipper Epargyreus clarus Size: Up to 2 inch wingspan Key ID features: Our largest skipper. Above dark brown to almost black, with dull orange bars on FW. Below dark brown to black with shining white patch on HW and coppery orange patch on FW. Similar species: None in Oregon. Host plant: many legume species . Habitat: Open, flowery areas at middle to lower elevations. Range: Western Oregon, Columbia and Snake River basins. Season: Late April to early September Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Callippe Fritillary butterfly. Gallery Prev Next Hat Point Rd, Wallowa Co, July 1, ssp. semivirida Callippe Fritillary Argynnis callippe AKA Speyeria callippe Size: Up to 2.5 inch wingspan Key ID features: Varies significantly among subspecies especially below. Light orange above with thin black veins, black shading near the body, black irregular lines inwardly, submarginal black spot band and black marking along margin like chain links, bolder on female. Silver spots below show boldly through above. Below "disc" on HW ranges from light tan-brown to dark reddish brown, with large silvery-white oval spots usually with green or greenish brown caps. Similar species: Zerene Fritillary is larger, with silver spots not showing through above as boldly, lacks greenish caps to silver spots on disc below. Host plant: Violet (Viola ) species . Habitat: Montane canyons and roadsides, sage-steppe, pine-oak woodland openings, grasslands. Range: Throughout mountainous areas of eastern and southwestern Oregon, except in Columbia River basin. Season: Early May to early September. Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Gray Hairstreak butterfly. Gallery Prev Next Picture Rock Pass, Lake County, August 5 Gray Hairstreak Strymon melinus Size: 1.0 - 1.25 inches wingspan Key ID features: Dark gray above (darker when very fresh). Orange patch and light blue lines bordering tails above. Light gray below with bold broken median black line edged in white, and vague submarginal band of black chevrons on HW. Two sets of tails, one short and one long, with two prominent adjacent orange patches below. Similar species: Female tailed-blues are smaller, with more rounded FW, and usually lack clear gray ground color below. Hostplant: A true generalist that uses a huge range of plants and plant families . Habitat: Virtually all open habitats. Range: All of Oregon. Season: Late March to mid-October Abundance: Very common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Propertius Duskywing butterfly. Gallery Prev Next W Boundary Rd, Lane Co, April 26 - female Propertius Duskywing Erynnis propertius Size: Up to 1.75 inch wingspan Key ID features: Our largest duskywing. Above, FW gray-brown with frosted bands and spots, 3-6 hyaline (glassy, translucent) spots on FW . FW often appears banded, especially in females. HW plainer gray-brown sometimes with vague light spots. Below brown with light spots and hyaline spots on FW, few to no small vague spots on HW. Similar species: Other duskywings are smaller, and generally less boldy marked. Host plant: Oak species, especially Oregon White Oak (Quercus garryana ), and golden chinkapin (Chrysolepis chrysophylla ) at higher elevations. Habitat: Open areas near oaks or chinkapin. Range: Western Oregon from Cascade Crest to crest of Coast Range. Season: Late March to mid-July Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Edith's Checkerspot butterfly. Gallery Prev Next Deception Creek Rd, Lane Co, July 3 Edith's Checkerspot Euphydryas editha Size: Up to 2.25 inch wingspan Key ID features: Above black with alternating red and white spot bands separated by black lines. HW below has red and white bands, which, from the margin run red-white-red-red-white. Similar species: Snowberry checkerspot has red-white-red-white-white band pattern on HW below. Host plant: Several species in the figwort family, including paintbushes (Castilleja), penstemons, and monkeyflowers . Habitat: Commonly in s ubalpine and alpine meadows, sage-steppe. Frequently found on the highest point of the area. Also in arid river canyons in spring. Range: Cascade Range, Siskiyous, central Coast Range, parts of the Blue Mtns, Wallowa Mtns, and SE Oregon . Season: Late May to late July Abundance: Common Conservation Status: Secure, except ssp. taylori, which is listed as Endangered under the Endangered Species Act.

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Woodland Skipper butterfly. Gallery Prev Next Frissell Ridge, Lane Co, July 18 Woodland Skipper Ochlodes sylvanoides Size: Up to 1 inch wingspan Key ID features: Highly variable. Above orange, with dark brown, "toothy" borders, less distinct on HW. HW with large orange patch bordered by dark brown. Male above with narrow black stigmata, forming part of dark diagonal band running from wing base to FW tip. Female above also has dark diagonal band, with dark patch replacing stigmata . Below HW light yellowish brown usually with "folded" band of connected light spots (sometimes bold, sometimes barely visible or missing). Similar species: Sachem and Juba Skipper fly at the same time but are larger. Yuma Skipper is plain above and below. Juba Skipper has green gray ground color below with bold white spot bands. Host plant: Various grass species. Habitat: Any open grassy habitat. Range: A ll of Oregon. Season: Mid-June to early October Abundance: Common to abundant Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Glaucon Blue butterfly. Gallery Prev Next Sand Creek, Klamath Co, July 1 Summit Blue Euphilotes glaucon AKA Glaucon Blue Size: Up to 1.0 inch wingspan Key ID features: Small. Male blue above with narrow dark wing borders, little or no orange along trailing edge of HW. Female dark brown above with prominent orange zigzag along trailing margin. Both sexes have checked fringe on FW. Below bluish-gray with bold black spots, larger on FW, and broad, connected orange submarginal line on HW. Similar species: Best told from other Euphilotes blues by host-plant association, location and flight period. Host plant: Eriogonum umbellatum (Sulphur-flower buckwheat). Habitat: Well-drained sites where host plant grows, including high plateaus, ridges and roadsides. Range: North Cascades, Curry Co, Jackson Co, Josephine Co, Klamath Co, Deschutes Co, Harney Co Season: Early May to mid-August Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Sonoran Skipper butterfly. Gallery Prev Next Summit Meadows, LaneCo, August 13 Sonoran Skipper Polites sonora Size: Up to 1.25 inch wingspan Key ID features: Above orangish-brown, with darker reddish brown border, and vague light spot band on HW. Males with black stigmata with adjacent dark patches on FW, female FW with dark patch surrounded by yellowish spots. HW below brown with arc of pale yellow bars forming a curved band, and an elongated light spot near wing base . HW bars somewhat rounded with indistinct edges. Similar species: HW pattern below is somewhat similar to Mardon Skipper, which has shorter, broader wings and HW spots that are angular and more distinct. Host plant: Various grass species. Habitat: Flowery meadows and pastures, forest openings, roadsides, streambanks. Range: Cascade Range, Siskiyou Mtns, Klamath Mtns, Warner Mtns, Ochoco Mtns, Blue Mtns, Wallowa Mtns, Willamette Valley. Season: Late May to late August Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Dun Skipper butterfly. Gallery Prev Next Coburg Ridge, Lane Co, July 3 - male Dun Skipper Euphyes vestris Size: Up to 1.4 inch wingspan Key ID features: Medium gray-brown above and below, can have orange iridescence when fresh. Male with dark brown stigmata on FW, female with vague small white spots on both wings, above and below. Similar species: No other Oregon skipper is this shade of brown and relatively unmarked. Host plant: Sedges ( Carex ). Habitat: Moist areas including roadsides, meadows, riparian areas, seeps. Range: West of the Cascade Range crest. Season: Late May to early September Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Mountain Mahogany Hairstreak butterfly. Gallery Prev Next Crooked Cr, Lake Co, August 6 - male Mountain Mahogany Hairstreak Satyrium tetra Size: 1.0 - 1.25 inches wingspan Key ID features: Dark gray-brown above. Gray-brown below with median line, and submarginal band of black chevrons. Tail short on males, longer on females, with adjacent blue frosted patch, and one (or mare) of the chevrons with small orange patch. Similar species: Somewhat similar to Hedgerow HS, which has more defined median line on HW below. Gold-Hunter's HS is more brown below, with a less clear and defined median line on HW below. Host plant: Mountain Mahogany (Cercocarpus montanus, C. ledifolius ) . Habitat: Dry ridges and plateaus, oak-pine edges, shrubby areas with Mountain Mahogany. Range: Southern portion of Josephine, Jackson, Klamath and Lake counties. Season: Early July to late August Abundance: Uncommon Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Thicket Hairstreak butterfly. Gallery Prev Next Rock Creek Canyon, Baker Co, June 23 Thicket Hairstreak Callophrys spinetorum Size: 1.0 - 1.25 inches wingspan Key ID features: Above both sexes bright, steely blue. Below reddish-brown. White-tipped black tails on HW, with adjacent patches of gray-blue and orange. Bold white median line containing distinct "W" near tails, and submarginal row of black spots along the entire trailing margin of HW. Similar species: Johnson's HS lacks prominent "W" in white median line, is brown above, and submarginal spots on HW only run half way along the trailing margin. Host plant: Several species of mistletoe that grow on conifers (Arceuthobium sp.) . Habitat: Clearings in mature coniferous forest (Ponderosa pine, Douglas-fir, western hemlock, Grand fir). Range: East flank of Cascades Range, southern Cascades, Siskiyou Mtns, Ochocos, Blue Mtns. Season: Late April to mid-August Abundance: Uncommon Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Mountain Parnassian butterfly. Gallery Prev Next Boccard Point, Jackson Co, July 5, female Mountain Parnassian Parnassius smintheus AKA Rocky Mountain Parnassian Size: 2.0 - 2.5 inches wingspan Key ID features: White/gray/translucent wings with red spots on the HW, and often with additional red patches bordered with black on FW. Antennae are boldly black/white striped. Similar pattern below, with medial red spots having pink centers. Similar species: Clodius Parnassian (Parnassius clodius ), which is larger, usually has solid black antennae Host plant: Stonecrops including Sedum obtusatum, S. lanceolatum Habitat: Primarily rocky outcroppings above 2500' elevation. Range: Siskiyou Mtns, Aldrich, Blue and Wallowa Mtns Season: Late June to late August. Abundance: Locally common Conservation Status: Secure